Synthetic Roofing

What is Synthetic Roofing

by with No Comment Roof SystemsRoofing Services

What is synthetic roofing

With the aid of modern technology and scientific innovations, it seems like there’s no limit to what synthetic materials can do. This, of course, includes roof materials. Synthetic roofing products include rubber, plastic, and polymer roofing have been developed to provide the colour, look, and even texture of natural materials like slate and wood without the heaviness and fragility of natural roof materials.

For many modern roofing systems, synthetic membranes are installed between the roof deck and the shingle to provide protection to the deck. The underlayment acts as an important second line of defense from leaks, storms, and ice damage which can save your home from costly repairs. Traditional underlayment is commonly referred to as felt or tar paper, and is made of paper saturated in asphalt. Synthetic roofing is traditionally used in commercial and industrial buildings however you might consider synthetic membrane for your home because it generally lasts longer and provides better protection.

Membrane Roofing

Membrane roofing usually comprised of five layers which provide secured redundancy and improved durability for your roof. The woven scrim layer adds strength to prevent wrinkling and tears over time. The advanced back sheet adheres to the deck for easier installation for roofing contractors and provides an additional non-slip surface improved walkability.

Membrane roofing is a system of roofing traditionally used for flat or nearly flat roofs – roofs with less than a 14 degree slope. Here on the west coast of British Columbia, however, it’s a really good question as to why anyone would construct a building with a flat roof. More and more we’re seeing synthetic membranes on all types of residential roofing and with Vancouver’s heavy rainfall, synthetic membranes provide that extra protection you need.

Synthetic roof materials have been specially designed for optimal strength and durability. They’re also incredibly easy to maintain and many are fire-resistant. In fact, many synthetic materials are less expensive than their traditional roof material counterparts.

Many roofing material manufacturers are coming out with eco-friendly synthetic materials that emit the sun’s energy back into the atmosphere, reducing the cooling load on homes and businesses, as well as the heat-island effect in heavily populated areas. While perhaps not as important as in somewhere in California or down south, it can add an extra layer of protection in the hot summer months.

Types of Synthetic Membrane Roofing

Synthetic roof materials are generally made with propylene. Propylene is an organic compound. At room temperature, it is a gas. When mixed with other compounds it reacts and changes. This is one of the ways plastic is made. These synthetic roofing materials are so neat not only for their green capabilities, but also because they can mimic the look of other types of materials including wood, slate, concrete, terra-cotta and more.
There are a few different types of membrane system is made. One is a synthetic rubber, also referred to as Thermoplastic where the rubber is welded together to create one large seamless membrane which provides protection.

Thermoplastic membranes are a type of synthetic rubber. The difference is that the seams of the roofing membrane overlap and they are bonded together by either melting or dissolving the membrane. The bonding process creates a seam that is as strong as the rest of the membrane roofing.

Another is the Modified bitumen which is a type of roof that really evolved from the traditional asphalt roofing system. The seams are joined together in a variety of ways. Heat is used to melt the asphalt and form a seal. A cold application can be used and there are several self-adhesive systems.
The last type or synthetic membrane roofing is called Thermoset. This type of membrane roof is made of large, flat pieces of synthetic rubber or similar materials. These pieces are bonded together at the seams to form one continuous membrane. Thermosets are widely used roofing materials due to their ability to withstand damaging effects of sun-rays and chemicals found on roofs.

Advantages of Synthetic Roofing

Using synthetic membrane roofing has many advantages over asphalt roofing. Membrane roofing is far easier to create a perfect seal and a truly continuous membrane. All membrane roofing systems include properties that allow for expansion and contraction and UV resistance. With membrane roofing systems seams do not exist or are very strong. When the roofing system experiences expansion or contraction the roof does not form leaks or cracks in the membrane.

The fact of the matter is that there are many building in the Lower Mainland that use flat roofing. Traditionally the roofing system used has been tar and gravel roofing systems or asphalt. This type of roofing can be loosely considered a membrane roofing system but it does have some disadvantages. In Vancouver we can experience freezing temperatures in the winter and this can damage the tar and gravel roofing system. Ice damns can form and this can prohibit water from flowing off the roof. Pooling water can lead to sagging which then leads to poor drainage overall.

Membrane roofing is an ideal solution for flat or nearly flat roofing systems. The membrane roofing is applied to the entire surface area and sealed to form a seamless barrier. That prevents water from leaking in and helps to move water to drainage ports. Membrane roofing is made of a variety of synthetic materials. Commonly the roofing system is made of a synthetic rubber, thermoplastic or modified bitumen.

  • High Impact Resistance
  • Wind Resistance
  • Increased Fire Resistance
  • Resistance to Pollution
  • Longer Life Spans

Conclusion

While synthetic roofing has many advantages, it isn’t something that can be completed by an amateur roofing contractor. You need a professional who knows what they are doing which is why you should call Cambie Roofing. If you have any questions or need an estimate on your roof call the experts. At Cambie Roofing, we have been in business for over half a century – so we feel confident in saying we are your best roofing choice.

Originally published Oct. 2018.
Updated and republished July 2023.

Torch on roofing, Modified Bitumen Roofing Tips

Modified bitumen roofing tips

by with No Comment Roof Systems

Modified Bitumen Roofing Tips

Modified bitumen is a very popular roofing material. In this blog post we will explore what it is, how it works, how to identify it, installation methods and more.

What is Modified Bitumen Roofing?

Modified Bitumen Roofing is made from asphalt and a variety of rubber modifiers and solvents. It is the next evolution of asphalt roofing. In an application process the seams are heated to melt the asphalt together and create a seal. There is also hot-mopped application, similar to how conventional roofs are installed.

How Modified Bitumen Works

Modified bitumen can be installed overtop of an existing tar roof unlike rubber flat roofing, which can be eaten away. It is also very rugged and can sustain a fair amount of foot traffic. Modified bitumen roofs involve some traditional materials, but use modern fabrication methods, and traditional or more contemporary installation techniques.

Modified bitumen roofs are made from prefabricated rolls of modified asphalt or coal tar reinforced with a fiberglass or polyester reinforced mat. Rubber-modified asphalts, such as styrene-butadiene-styrene materials, are granular surfaced and are normally installed in two or more plies using mopping asphalt, cold adhesives, or torch welding. Plastic-modified asphalts such as atactic polypropylene systems are smooth or granular surfaced and can be heat welded or laid in cold adhesive.

Modified bitumen membranes combine the features of a built-up roof with the added strength from its polymer modification. Using a reinforced sheet that is prefabricated in the plant, modified bitumen systems require a less labor-intensive application than other types of roofing and can be applied in both commercial and residential roofs.

A modified bitumen roof is composed primarily of polymer-modified bitumen reinforced with one or more plies of fabric such as polyester, fiberglass or a combination of both. It can also include mineral granules, aluminum or copper. The bitumen determines the membrane’s characteristics and provides primary waterproofing protection, while the reinforcement adds strength, puncture resistance and overall system integrity.

A roofer will ensure modified bitumen membranes undergo strict quality control standards to ensure uniform thickness and consistent physical properties throughout the membrane. The finished roofing is usually two to four layers of modified bitumen membrane and a base sheet, with additional plies for added strength if needed. Usually if more layers are applied, the roof will last longer.

How to Identify Modified Bitumen

The best way to identify a Modified Bitumen roof is to look at the material edges. Modified bitumen roofing is thicker, and its edges are sealed by heating with a torch. You should see a little runout of melted bitumen at the material seams. If there is no runout the roof may have been adhered using some other method. But if it was “torched” it was not heated sufficiently and may be less durable.
Secondly, , it also is better at resisting tearing and breaking. If you find that it is easy to tear into the roof material edge it’s probably roll roofing not mod-bit.

Properties & Installation Methods

Most modified-bitumen roofs are torch-applied, although there are also self-adhesive and cold-process systems. The waterproofing membrane, sometimes called “single-ply modified,” consists of asphalt bitumen reinforced with a polyester or fiberglass fabric. And modified with polymers to give it greater strength, flexibility, resistance to UV degradation, and resistance to heat and cold.

A variety of different chemical formulations have been tried over the years. It is best to stick to a product with an established track record. In general, modified-bitumen roofs can be applied to slopes as shallow as 1/4 inch per foot.
There are two main forms of modified bitumen roofing installation: the torch-down installation method, and a peel-and-stick installation.

Installation Methods for Modified Bitumen Roofs

A torch-applied, or torchdown, roof starts with a non-flammable base sheet made of asphalt-saturated felt or fiberglass that is mechanically attached to the roofing deck. In residential construction, the base sheet is usually attached with roofing nails driven through metal caps.

The second layer is the waterproofing membrane. This is heated with a torch as it unrolls, fusing it to the base sheet, to itself at seams, and to penetrations such as skylights. Installers must learn to heat the membrane so it is hot enough to fuse but not so hot as to burn through.

Membranes may be either smooth or have a granular surface like roll roofing. Smooth-faced membranes need a third coating, which has colored or reflective pigments to protect against UV radiation. The smooth type is preferable where foot traffic is expected or where decking is going over the roofing.

Torchdown roofing is self-flashing and uses no adhesives or solvents to seal around openings. The material can be run up parapets and abutting wall. And patches are used to seal around metal skylight curbs and similar openings. A special patching compound is used to seal to PVC stacks. If applied correctly, the torchdown membrane is essentially seamless.

Pros and Cons

Bitumen roofs are very durable and are one of the longer lasting types of flat roofing materials, easily lasting 20 years or more. They are also easily repaired without solvents or adhesives, making it less expensive to maintain. It is compatible with asphalt shingles and asphalt compounds, although patching with roofing cement is not recommended. The reinforced fabric layer isolates the membrane above from building movement and gives the material enough strength to support occasional foot traffic.

The main drawback of modified bitumen roofing is the risk of fire during installation. While the risk of fire is low in the hands of trained installers, care must be taken when using torchdown on a wood-frame structure. A number of fires have started with sawdust that has accumulated in empty cavities, such as crickets and parapets. Inspection of the roof for sawdust pockets while it is being framed is advised.

Typical Slopes for Modified Bitumen Roof Systems

Modified bitumen roofing is normally installed on low-slope roofing, up to 3 inches in slope. Or depending on the application method, up to six inches of slope per foot may be permitted. Because there are quite a few approved installation methods. Manufacturers typically use a alphameric roof application method name that encodes the basics of how the roof covering should be installed.

Originally published August 2017.
Updated and republished June 2023.

Solar panel roofing

Solar panel roofing

by Roof Systems

Solar Panel Roofing

Utilizing renewable energy sources has become a massive focus in recent years throughout all construction sectors, including roofing. Many homeowners are looking for ways to reduce their carbon footprints. One of the most popular ways of doing this is investing in solar panel roofing.

Whether you’re building a new home or renovating your current roof, solar panel roofing could be a very viable option if you’re looking to enter the sustainable roofing world. Not only are solar panels good for generating clean energy, they can also help you achieve a sleek and unique look when designing the roof of your home.

What are solar panels?

Solar panels consist of photovoltaic cells, also known as PV. These cells have one job – to convert sunlight into electricity. These panels are typically made from semiconductors like silicon. Once sunlight hits them, they absorb photons (light particles) before generating electric currents. Usually the average home can rely solely on solar energy from these cells for all electricity needs. In simple terms, this process is called the photovoltaic effect.

How does it work?

After a solar panel has absorbed light particles from the sun, it activates the electrons inside of the PV cells. This process starts the PV effect and in turn creates energy. The cells break away from their atomic bonds and work together to create a useable amount of energy. Once this occurs, the electricity becomes a ‘direct current,’ also known as DC. DC cannot be used as is within our homes, so it must be converted. In order to do this, the solar panel uses an inverter. This converts the DC into an alternating current (AC). AC’s can function with regular electrical systems that are found within residential and commercial properties.

Because the solar panels are hooked up to your home’s electrical panel, electricity will start generating right away. If your solar panel system generates too much electricity for your home to use at a given time, it can be saved by being transferred back into the system. This is called net metering which ensures your solar energy doesn’t go to waste.

Benefits of solar panels

Now you may be wondering why solar panels are a good option for your roof. We know they are good for the environment but they are also practical. You can have the best of both worlds – the benefits of a traditional roofing system and the ability to generate clean energy. Don’t rely on historical energy sources for your home. Invest and participate in the way of the future with solar panels.

We are aware that solar panels aren’t the most cost-friendly options on the market, compared to some other roofing materials. While this can be a significant barrier, factoring in the long-term financial benefits is something to think about when considering solar panels. Once installed, solar panels can greatly reduce your electricity bills. If you haven’t already noticed, everything is getting more and more expensive. Why not choose to be energy independent? Solar panels can give you this freedom and help you shy away from having to pay more and more for your electricity in 2023.

Even if you have a solar panel roof, they can be installed in ways that compliment your home. So there is no reason to be worried about aesthetics. Talk to the experts at Cambie and we can help you achieve the right look while also ensuring effectiveness.

Solar panel installation

Let’s say you’ve made your mind up about wanting solar panels on your roof, the next step includes determining your roof’s layout and ability to host these solar panels. Is your roof covered by trees? If so, there might be too much shade for your solar panels to properly function as they need to be exposed to sunlight. Is your roof tilted or flat? Will this impact how much sunlight is absorbed by the solar panels? These types of questions are things to consider when looking at the overall structural integrity of your roof.

Once you have consulted with a professional and your roofing design is official, the company will send out a team to install the solar panel system. Much like a traditional roofing installation, the roofers will ensure the solar panels are added properly. Paying attention to sealing and weatherproofing is of upmost importance.

Once installed, it is time to connect the electrical elements. This includes the inverters we mentioned above as well as wires and panels – turning the DC’s into AC’s. After this is completed, the roofing professionals will conduct an inspection before being activated to ensure everything is running smoothly and safely. If all is good, the solar panel system will become connected to your electrical grid and can be used to generate solar energy!

Conclusion

Solar panel roofing systems are a great way for you to become a greener homeowner. Because of how positive solar panels are for the environment, many cities will actually provide you with incentives to install them. This is because they can be costly at first, however you may be able to get your hands on a tax credit or rebate. While exploring your roofing options, ask us about solar panels and we can provide you with a free estimate.

All about sustainable roof coatings.

All about sustainable roof coatings

by Roof SystemsRoof TypesRoofing

All About Sustainable Roof Coatings

Your roof, often overlooked yet vital to the protection of your property, can play a significant role in environmental sustainability. Sustainable roof coatings are emerging as a popular choice for property owners looking to enhance the longevity of their roofs while minimizing their environmental impact. In this comprehensive guide all about sustainable roof coatings, we’ll explore the different types of roof coatings, delve into the world of sustainable options available on the market, discuss the reasons for choosing these eco-friendly alternatives and highlight the myriad benefits they bring. Let’s embark on a journey to understand how sustainable roof coatings can contribute to a greener and more energy-efficient future.

What is a Roof Coating?

A roof coating is a monolithic, fully adhered, fluid-applied roofing membrane designed to protect existing roofing systems. Applied directly to the roof’s surface, these coatings form a seamless, waterproof barrier that shields the roof from various environmental factors, including harsh weather conditions and UV radiation. Roof coatings come in various formulations, including silicone, acrylic, and polyurethane, providing versatile solutions for different roofing materials and structures.

Cool Roof Coatings:

Cool roof coatings are engineered to be highly reflective, minimizing the absorption of sunlight and heat. This, in turn, reduces indoor temperatures and the need for air conditioning. Energy savings, extended roof lifespan, and a decreased carbon footprint are the key benefits of cool roof coatings. Commonly used on flat or low-slope roofs in both residential and commercial settings.

Recycled Roof Coatings:

These coatings are manufactured from recycled materials, contributing to a more sustainable and circular economy. By using recycled materials, these coatings reduce waste and conserve valuable resources. Suitable for a wide range of roofing materials, promoting eco-conscious practices.

Low VOC (Volatile Organic Compounds) Coatings:

Low VOC coatings emit fewer harmful chemicals into the atmosphere, promoting better indoor air quality. Environmentally friendly and health-conscious, low VOC coatings contribute to a safer living and working environment. Versatile and applicable to various roofing systems, reducing environmental impact.

Solar Reflective Coatings:

Solar reflective coatings incorporate reflective pigments that deflect solar radiation and UV rays, reducing heat absorption. Energy savings, lower cooling costs, and extended roof lifespan are the key advantages of solar reflective coatings. Effective on various roofing materials, contributing to energy efficiency.

Why Choose a Sustainable Roof Coating?

Environmental Benefits:

Opting for a sustainable roof coating is a proactive step towards reducing your environmental footprint. Cool roof coatings, recycled roof coatings, and low VOC coatings, in particular, contribute to a more sustainable and eco-friendly future. By utilizing recycled materials and emitting fewer harmful chemicals, these coatings align with the principles of environmental responsibility, making them an ideal choice for the conscientious property owner.

Energy Efficiency:

Cool roof coatings and solar reflective coatings are champions of energy efficiency. By reflecting sunlight and reducing heat absorption, these coatings help maintain a cooler indoor temperature. This not only results in lower energy bills but also reduces the overall demand for air conditioning. The ripple effect is a significant reduction in energy consumption and a more sustainable approach to building operation.

Extended Roof Lifespan:

The protective nature of roof coatings plays a pivotal role in extending the lifespan of your roof. By forming a seamless barrier against weathering, UV radiation, and other environmental stressors, these coatings prevent premature deterioration of roofing materials. This longevity not only reduces the frequency of repairs but also minimizes the need for premature roof replacements, contributing to overall sustainability.

Cost Savings:

While the initial investment in sustainable roof coatings might be slightly higher than traditional alternatives, the long-term financial benefits are substantial. Energy savings, reduced maintenance costs, and an extended roof lifespan translate into significant cost savings over time. Sustainable choices are not just environmentally responsible; they are economically savvy.

Improved Indoor Comfort:

Cool roof coatings and other reflective options contribute to a more comfortable indoor environment. By reducing heat absorption, these coatings help maintain cooler temperatures within the building. This results in a more pleasant living or working space for occupants, enhancing overall comfort and well-being.

The Benefits of Sustainable Roof Coatings

Energy Savings:

Cool roof coatings and solar reflective coatings are particularly effective in reducing energy consumption. By reflecting sunlight and heat away from the roof, these coatings lower indoor temperatures, reducing the need for air conditioning. This, in turn, leads to significant energy savings and lower utility bills.

Reduced Maintenance Costs:

The seamless protection offered by roof coatings minimizes wear and tear on roofing materials, reducing the frequency of repairs. This results in lower maintenance costs over the life of the roof, making sustainable roof coatings a cost-effective choice in the long run.

Environmental Responsibility:

Choosing sustainable roof coatings demonstrates a commitment to environmental responsibility. Whether it’s through the use of recycled materials, low VOC formulations, or green roof options, these coatings contribute to a more sustainable and eco-friendly built environment.

Extended Roof Lifespan:

The protective barrier created by roof coatings shields the roof from various environmental stressors, including UV radiation and weathering. This extends the lifespan of the roof, reducing the need for premature replacements and minimizing the environmental impact of roofing materials.

Improved Property Value:

In an era where sustainability is increasingly valued, a property with eco-friendly features, such as a sustainable roof coating, can enhance its overall value. Potential buyers or tenants are often attracted to properties that prioritize environmental responsibility.

Conclusion

We hope you enjoyed this article all about sustainable roof coatings! Choosing a sustainable roof coating is not just about protecting your investment; it’s about making a positive impact on the environment and embracing a more sustainable way of living. Whether you opt for cool roof coatings, recycled options, low VOC formulations, solar reflective coatings, or green roof solutions, each choice contributes to a greener tomorrow. The benefits are far-reaching, from energy savings and reduced maintenance costs to improved indoor comfort and enhanced property value. The experts here at Cambie Roofing have witnessed firsthand how the roofing industry has transformed for over 75 years and we appreciate all developments that help us get closer to a sustainable future.

Commercial Roofs: Balancing Functionality and Aesthetics.

Commercial Roofs: Balancing Functionality and Aesthetics

by commercial roofingRoof SystemsRoof Types

Commercial Roofs: Balancing Functionality and Aesthetics

Whether you’re looking to upgrade your current commercial roof or you’re starting from scratch, it’s important to consider both functionality and aesthetics. The roof of your commercial property plays a significant role in the overall look and feel of the entire building. While the main role of your roof is to protect what’s inside your building, having both a functional and aesthetically pleasing roof can have a positive impact on how people view your business. In this blog post, we will explore ways business owners can balance aesthetics and functionality when building their commercial roof.

Choose the right materials

In order to achieve total functionality, you must choose the proper materials for your roof. If you don’t choose the correct materials, your entire building structure will be compromised. When determining what type of roof is best for you, you should take into account your geographical location and your business use. Because Cambie Roofing is a Canadian-based roofing company, we know how harsh the climate can be on roofing systems. This is why we have a variety of recommendations for commercial projects.

Modified bitumen

Modified bitumen roofing is a very popular choice for commercial roofs in Canada. Using various layers of polymer and asphalt, this is a cost effective and durable option.

Thermoplastic olefin

Next, thermoplastic olefin (TPO) is an energy efficient roofing material that has grown in popularity. TPO roofs are made of single-ply membranes that are welded together to form a seal. This means no moisture is able to penetrate, allowing for a resistant roofing system.

Ethylene propylene diene monomer

Another popular roofing material used on commercial projects is ethylene propylene diene monomer (EPDM). EPDM is a synthetic rubber which is great at protecting against the elements. Whether it be harsh winds that rip through a city for an afternoon or a scorching week-long heat wave, EPDM will protect your building.

Polyvinyl chloride

Another roofing material we thought we should mention is polyvinyl chloride (PVC). This system is wonderful at deflecting the sun’s rays so if you live somewhere with plenty of sunlight, this might be the best option for you. PVC systems are also very lightweight which makes them easier to install on roofs of all sizes. Take advantage of energy efficiency for your commercial building after installing a PVC system!

Metal roofs

Lastly, if you want a low maintenance energy efficient roofing system, you should consider installing a metal roof on your commercial property. While they can be costly to install, they have a very long lifespan which will save you money on repairs down the line. Metal roofs have become very popular among Canadian business owners because they are great at withstanding harsh environmental conditions. On the other side, metal roofs have a modernized feel and can make your building stylish, energy efficient and functional.

Roofing aesthetics

Once you’ve picked out the right roofing materials and systems for your commercial building, the next step is to figure out how to make it look appealing! Whether your building has a flat roof or a sloped roof, there are simple things you can do to achieve your desired look! Are you going for a sleek and modern design or do you want your building to stick out from its surroundings? Either way, there are ways you can achieve your desired look.

Colours and designs

Do you think your roof is lacking colour? Consider installing tiles or shingles that compliment the rest of your building’s appearance. You can add various accent colours to your roofing scheme to make it stand out or just one neutral colour if you’re looking to achieve a more sleek appearance. If you want to take it a step further, consider adding designs/artwork to the roof. This has become very popular among business owners with artistic backgrounds and companies focused on things like graphic design and exterior decorators. You can search for local artists in your area who might be interested to take on an outdoor challenge.

Solar panels

Solar panels have become increasingly popular among commercial building owners. You can get the panels installed in ways that compliment the look of your building while also showing your potential customers that you care about your carbon footprint. There are plenty of ways to integrate solar panels into your roofing system while also adding style.

Inviting features

If your employees and/or customers regularly access your roof, adding some lighting can make your roof that much more inviting. This includes things like string lights, lantern lights and LED strips. Some other ideas include comfortable seating options, water fountains and greenery. These things will help improve the experience people get when they visit your roof.

Green roofing systems

One of the coolest ways you can improve the aesthetics of your commercial building is installing a green roof. Not only do these systems provide beautiful alternatives to regular roofing systems, they positively impact the environment, promote biodiversity, improve air quality, regulate your building’s temperature and so much more.

Conclusion

Balancing functionality and aesthetics may seem challenging when it comes to your commercial roof. It is important to consult the professionals before making any changes to your existing roof or before designing a brand new roof. The experts at Cambie Roofing can assist you with choosing the most functional materials for your project while also giving you recommendations on how to make your roof look its best. Cambie Roofing makes roofing easy, thanks to more than 75 years of experience in the industry. Contact us today for a free estimate or if you have any questions about your project.

Is Solar Roofing Worth It?

Is Solar Roofing Worth It?

by Roof Systems

Unfortunately, much of North American still runs on nuclear power, coal and other fossil fuels. If we could get a cleaner source of energy, for example solar power it would have a big impact on the environment.
You’ve seen solar power roofs in the news, most notably when Tesla made a big splash recently with an advanced panel system that is more efficient and more powerful than the traditional technology.
But how viable is solar power in Vancouver? Is Solar Roofing Worth It? Let’s See.

Is Solar Roofing Worth It?

The main challenge is that Vancouver tends to have too much cloud cover for much of the year, especially in the winter months when electricity is most in demand. The northern latitude of the city also means days are shorter and solar radiation is less intense which of course, means less sunlight is converted to energy.  When we look in comparison to some States like California, New Mexico and Arizona which are sunny all year round and demand is highest in the summer when power generation is at its peak, solar energy makes more sense.
But that doesn’t mean that solar power will never work in British Columbia and we should write it off totally.
Lets’ have a closer look at the technology and see if the technology is and can ever be useful in Vancouver.

What If You Want A Solar Panel?

If you believe solar power is the best option for you there are multiple variables to consider when seeking out the best solar panels on the market. While more high-end panels will have higher efficiency ratings than others, investing in the best solar equipment doesn’t always result in the higher savings. The only way to find the “sweet spot” for your home is to evaluate quotes with varying equipment and financing offers.
For any homeowner in the early stage of shopping for solar that would just like a ballpark estimate for an installation, do some research online before calling anyone. There are a lot of different tools to help you estimate long-term savings and the upfront costs. You will want to compare quotes from multiple companies and multiple sources before making a final decision.

How Much Does The Solar Panel System Cost?

While there aren’t a lot of companies to choose from in Vancouver, installation prices will vary significantly depending on the solar company you choose and the equipment you install. Keep in mind installing cheap solar panels might feel like the easiest way to save some cash and get rebates, your total savings will often be higher if you invest in top-of-the-line equipment.
Don’t forget to research the solar incentives and rebates available. In British Columbia they can reduce your net cost by 50 percent or even more. In addition, the Canada government offers a 30 percent solar tax credit. Do your research as cities like Nanaimo offer additional tax incentives.

Is Solar Power Worth it?

The average cost of solar power system in Canada is currently between $15,000 and $30,000 which is far more than the average Canadian is willing to pay. The average household uses 7,500 kilowatt-hours (kWh) but of course that changes on the time of year and the price of electricity. You can certainly save money if you plan on using solar power in the long run but you will have to do some calculations to figure out how much you spend on electricity to see if it’s worth it.
In some parts of the country, you can pay as little as 8 cents per kWh; in others, you’ll pay 20 cents or more. In British Columbia, you pay 8.29 per kWh for the first 1,350 kWh you use and 12.43 cents per kWh for everything above that.
When you go solar, you effectively install a small power plant on your roof to replace the electricity you get from B.C. Hydro. That means homeowners with high electricity rates from their utility are the ones who save the most when they switch to home solar power. For people who don’t want to rely on a centralized power source this may be important. If there is a black out and if you have a solar power generator you may not be effected.

Solar Roofing In Vancouver

If you want to install solar power because you want to reduce your carbon footprint there won’t be much difference if you live in British Columbia because over the long term, the carbon footprint of hydro power isn’t much different from solar. Hydro power uses water and floods entire valleys while solar panels requires large amounts of energy and toxic chemicals for the manufacturing process.
According to scientists, solar panels in a rooftop installation produce about 41 grams of CO2 equivalents per kilowatt hour over the lifetime of the system, mainly due to the energy required to manufacture the equipment while hydroelectricity produces 24 grams of CO2 equivalents per kilowatt hour.

Conclusion

For all solar electricity’s advantages, Vancouver is not the best place to install and use solar roofing system. The technology really works best where there is more sun for longer periods of time. In addition, power is not very expensive, so you won’t get much savings.
That’s not to say that solar electricity will be a bad idea forever. The technology will improve and become more affordable so sometime in the future it might replace hydro power as B.C.s number one electracy source. More forward-thinking companies like Tesla will find creative solutions that will benefit cloudy cities like Vancouver.

Synthetic Roofing

What is Synthetic Roofing and Should I Use it for My Home

by with No Comment Roof SystemsRoofing Services

With the aid of modern technology and scientific innovations, it seems like there’s no limit to what synthetic materials can do. This, of course, includes roof materials. Synthetic roofing products include rubber, plastic, and polymer roofing have been developed to provide the colour, look, and even texture of natural materials like slate and wood without the heaviness and fragility of natural roof materials.

For many modern roofing systems, synthetic membranes are installed between the roof deck and the shingle to provide protection to the deck. The underlayment acts as an important second line of defense from leaks, storms, and ice damage which can save your home from costly repairs.
Traditional underlayment is commonly referred to as felt or tar paper, and is made of paper saturated in asphalt. Synthetic roofing is traditionally used in commercial and industrial buildings. However you might consider synthetic membrane for your home because it generally lasts longer and provides better protection.

Types of roofing

Membrane roofing usually comprised of five layers which provide secured redundancy and improved durability for your roof. The woven scrim layer adds strength to prevent wrinkling and tears over time. The advanced back sheet adheres to the deck for easier installation for roofing contractors and provides an additional non-slip surface improved walkability.

Membrane roofing is a system of roofing traditionally used for flat or nearly flat roofs – roofs with less than a 14 degree slope. Here on the west coast of British Columbia, however, it’s a really good question as to why anyone would construct a building with a flat roof. More and more we’re seeing synthetic membranes on all types of residential roofing and with Vancouver’s heavy rainfall, synthetic membranes provide that extra protection you need.

Synthetic roof materials have been specially designed for optimal strength and durability. They’re also incredibly easy to maintain and many are fire-resistant. In fact, many synthetic materials are less expensive than their traditional roof material counterparts.
Many roofing material manufacturers are coming out with eco-friendly synthetic materials. That emit the sun’s energy back into the atmosphere, reducing the cooling load on homes and businesses, as well as the heat-island effect in heavily populated areas. While perhaps not as important as in somewhere in California or down south, it can add an extra layer of protection in the hot summer months.

Types of Synthetic Membrane Roofing

Synthetic roof materials are generally made with propylene. Propylene is an organic compound. At room temperature, it is a gas. When mixed with other compounds it reacts and changes. This is one of the ways plastic is made.
These synthetic roofing materials are so neat not only for their green capabilities, but also because they can mimic the look of other types of materials including wood, slate, concrete, terra-cotta and more.
There are a few different types of membrane system is made. One is a synthetic rubber, also referred to as Thermoplastic where the rubber is welded together to create one large seamless membrane which provides protection.

Thermoplastic membranes are a type of synthetic rubber. The difference is that the seams of the roofing membrane overlap and they are bonded together by either melting or dissolving the membrane. The bonding process creates a seam that is as strong as the rest of the membrane roofing.
Another is the Modified bitumen which is a type of roof that really evolved from the traditional asphalt roofing system. The seams are joined together in a variety of ways. Heat is used to melt the asphalt and form a seal. A cold application can be used and there are several self-adhesive systems.

The last type or synthetic membrane roofing is called Thermoset. This type of membrane roof is made of large, flat pieces of synthetic rubber or similar materials. These pieces are bonded together at the seams to form one continuous membrane. Thermosets are widely used roofing materials due to their ability to withstand damaging effects of sun-rays and chemicals found on roofs

Advantages of Synthetic Roofing

Using synthetic membrane roofing has many advantages over asphalt roofing. Membrane roofing is far easier to create a perfect seal and a truly continuous membrane. All membrane roofing systems include properties that allow for expansion and contraction and UV resistance. With membrane roofing systems seams do not exist or are very strong. When the roofing system experiences expansion or contraction the roof does not form leaks or cracks in the membrane.

The fact of the matter is that there are many building in the Lower Mainland that use flat roofing. Traditionally the roofing system used has been tar and gravel roofing systems or asphalt.
This type of roofing can be loosely considered a membrane roofing system but it does have some disadvantages. In Vancouver we can experience freezing temperatures in the winter and this can damage the tar and gravel roofing system. Ice damns can form and this can prohibit water from flowing off the roof. Pooling water can lead to sagging which then leads to poor drainage overall.

Membrane roofing is an ideal solution for flat or nearly flat roofing systems. The membrane roofing is applied to the entire surface area and sealed to form a seamless barrier. That prevents water from leaking in and helps to move water to drainage ports. Membrane roofing is made of a variety of synthetic materials. Commonly the roofing system is made of a synthetic rubber, thermoplastic or modified bitumen.

1. High Impact Resistance
2. Wind Resistance
3. Increased Fire Resistance
4. Resistance to Pollution
5. Longer Life Spans

Conclusion

While synthetic roofing has many advantages, it isn’t something that can be completed by an amateur roofing contractor. You need a professional who knows what they are doing which is why you should call Cambie Roofing. If you have any questions or need an estimate on your roof call the experts. At Cambie Roofing, we have been in business for over half a century – so we feel confident in saying we are your best roofing choice.

Residential Roofing, Best Types of Roofs

Best Types of Roofs

by with No Comment Roof Systems

Best Types of Roofs

In this blog post we’re going to cover the best types of roofs for your residential or commercial building.
Whether you are building your roof from scratch or patching up your existing roof a wide range of materials and types are readily available. But which one is the best for your home?
There are many types and materials to choose from which include asphalt, wood, and composite shingles, as well as slate, concrete, and clay tiles. Cost is an important factor, but it’s not the only one. Style, material weight, and installation requirements should also influence your selection. Lastly, you want your roof to blend in well with the neighbourhood. If you build a flat roof in a neighbourhood of cedar roofs, it can cause your house to stick out like a sore thumb.

Cost

A number of considerations will affect the cost of a new roof. The price of the material is the starting point, but other factors also must be considered. One is the condition of the existing roof if you are remodeling a house. If old materials must be stripped off, and if the supporting structure needs repair, that can be costly. The shape of the roof is another contributing factor. A gable roof with few or no breaks in its planes makes for a simple roofing job. A house with multiple chimneys, intersecting rooflines, turrets, skylights, or other elements will cost significantly more to roof. It’s always important to get an estimate before starting any work.

Materials

Not every roofing material can be used on every roof. A flat roof or one with a low slope may demand a surface different from one with a steeper pitch. Materials like slate and tile are very heavy, so the structure of many homes is inadequate to carry the load. Consider the following options, then talk with your roofer and get an estimate for the job.

Asphalt Shingles

This is the most commonly used of all roof materials, probably because it’s the least expensive and requires a minimum of skill to install. It’s made of a fiberglass medium that’s been impregnated with asphalt and then given a surface of sand-like granules. Two basic configurations are sold: the standard single-thickness variety and thicker, laminated products. The standard type costs roughly half as much, but laminated shingles have an appealing textured appearance and last roughly half as long.

Wood

Wood was the main choice for centuries, and it’s still a good option. Usually made of cedar, redwood, or pine, shingles are sawn or split. They have a life expectancy in the 25-year range but cost an average of twice as much.

Metal

Aluminum, steel, copper, copper-and-asphalt, and lead are all durable—and expensive—roofing surfaces. Lead and the copper/asphalt varieties are typically installed as shingles, but others are manufactured for seamed roofs consisting of vertical lengths of metal that are joined with solder. These roofs start at about $250 per square but often cost two or three times that.
Tile and Cement. The half cylinders of tile roofing are common on Spanish Colonial and Mission styles; cement and some metal roofs imitate tile’s wavy effect. All are expensive, very durable, and tend to be very heavy.

Slate

Slate is not very common in Vancouver. However, is among the most durable of all roofing materials. Not all slate is the same but the best of it will outlast the fasteners that hold it in place. Hundred-year-old slate, in fact, is often recycled for reinstallation, with the expectation it will last another century. But slate is expensive and very heavy.

Best Types of Roofs

Once you pick your material, you have to pick the style of roof you want. There are many different types but we have narrowed it down to three different types. The styles of roofs vary depending on area and taste.

Gable Roof

Gable roof designs are one of the simpler and most common styles when it comes to roofs. The gable roof style looks like an upside down. There are numerous advantages to the gable roof style. First, its simple design makes it easier to construct and less expensive than alternative roof types. There is also available space underneath the roof, allowing for an attic or a more open concept. Gable roof structures easily shed water and snow which makes them great for areas with heavy snowfall such as Canada. The steep pitch of gable roofs allows for excellent water drainage and fewer leaks. They also allow for more ventilation, and provide more space for an attic or vaulted ceilings.

Sawtooth Roof

A Sawtooth roof is two or more parallel pitched roofs in which the sloped and vertical surfaces alternate. As the name suggests, the roof resembles the side of a saw blade or a graph line. Sawtooth roofs were once only used in industrial buildings. However, now they have become trendy and are now used in modern home design.
They are very chic looking, this design can have windows placed in the vertical spaces of the roof, allowing more natural light inside the home. The higher peaks provide the opportunity for either attic, vaulted ceilings or loft living space. The combination of the various slopes and use of natural light make this design an excellent choice for homes with Eco-friendly conveniences, geothermal, solar panels, and radiant heating systems.

Flat Roof

Flat roofs are common especially with commercial buildings but can be used on residential homes as well. They are definitely the most simple roof to construct because they have little to no pitch. The most common types of systems used with flat roofs are rubber. By far the biggest advantage of using a flat roof is the expense. From the initial building and installation to the materials most often used to cover the roof, flat roofs are fairly cheap.

Choosing the Right Roof

More often than not, if you are remodeling, the existing roof of your house will determine your choice of roofing material. Should you be considering other options, you’ll want to consider not only the cost but the color, texture, weight, and durability of your alternatives, as well as what traditionally has been used on houses like yours. So, these Best Types of Roofs will help you to Decide.

Originally published on November 15th 2017
Updated on March 1st 2021.
Updated and Republished on Jan 10th 2023

Roofing Vents

Why Are Roofing Vents Important?

by Roof Systems

Why Are Roofing Vents Important?

Your roofing system needs balanced attic ventilation to perform at its best. When you’re
replacing your roof, ask your roofing contractor about ventilation options for your roof and
attic. They should offer several ventilation products for you to consider, ensuring you have a
balanced system of intake and exhaust vents.

Be prepared to discuss ventilation options with your contractor by understanding the different
types of roofing vents necessary to create a balanced attic ventilation system.
Depending on the shape, size, and materials of your roof and architecture of your home, either
a section or the entire underside of your roof deck is exposed to your attic space.

Attics may often be seen as unconditioned storage spaces. While that may be true for some
homes, especially those with rafter framed attics, some “attics” are little more than gaps
between the ceiling and roof deck. Big or small, these spaces need venting to manage heat and
moisture inside the structure as well.
Without correctly balancing the amount of intake roof ventilation with exhaust roof ventilation,
moisture can build up in your attic, leading to a potential host of problems, including:

  • Mold
  • Mildew
  • Damage to the structural integrity of your roof

How Balanced Attic Ventilation Works

Let’s first take a quick look at how balanced attic ventilation works. Imagine it’s a hot summer
day and you leave the front door of your house open so you can unload camping equipment
from your car. Your house windows are also open, and there’s a breeze blowing outside.
Suddenly, the front door slams shut. Why does that happen? Your home was drawing in air
through the open front door to replace the air leaving through the open windows. In
other words it was ventilating.

This is exactly what is happening in your attic through your intake and exhaust vents. First, air is
released from the attic to the outdoors through the exhaust vents, creating a vacuum. Then,
fresh air from the outside rushes back in through the intake vents, filling the vacuum.

If you don’t have the right amount of intake vents or if they’re blocked, air may be pulled from
your living spaces to help balance the pressure. Likewise, if you don’t have the right amount of
exhaust vents, warm pressurized air from the attic can make its way into your conditioned living
spaces. Both scenarios are not energy efficient and can potentially impact your home’s energy
costs. If you find yourself constantly adjusting your thermostat, then you may have a ventilation
issue.

Different Types of Roofing Vents

Intake Vents

Intake vents do just as their name suggests — they take in air from the outdoors. This fresh air
goes into the attic and replaces the air that went out from the exhaust vents, helping to ensure
balanced airflow.
Intake vents are typically placed under the eaves of the roof. They help the exhaust vents in the
attic do their job more effectively and assist in controlling energy costs.
There are two types of intake vents: soffit vents and roof-mounted intake vents.

Soffit Vents

Soffit vents are the most common type of intake roof vents, and they’re placed underneath the
roof eaves all along the length of your house or between the joists.

Roof Intake Vents

If your home has no soffit or exposed rafters under the eaves, a roof mounted intake vent can
be used to provide adequate air intake. These vents have a low profile that blend into the
roofline.

Exhaust Vents

Exhaust vents allow air to flow out of the attic to the outdoors. Attic fans and ridge vents are
two examples of exhaust vents, and these are typically placed higher on the roof, often the
highest pitch where hot air tends to gather.

Ridge Vents

Ridge vents, as the name implies, run along the very top of a roof on the ridge, typically where
the two sloping portions of a roof meet. They’re ideally placed to catch the wind blowing over
the roof, which helps expel moisture and heated air from the attic.

Static Roof Vents or Roof Louvers

Static roof vents or roof louvers permit air to escape the attic and are placed flat on the roof
and evenly distributed near the ridge.
You might find these listed under various names depending on the region in which you live,
such as:

  • Slant-backs
  • Box vents
  • Turtle vents
  • Half-rounds
  • Off-ridge vents

In the western U.S., they’re frequently called dormer vents.

Wind or Roof Turbines

Wind or roof turbines have blades or vanes built in. The wind turns these blades, creating a
spinning vacuum that helps draw out hot, moist attic air.

Attic Fans

Attic fans are typically located on a wall inside the attic. Their job is to pull air from the attic and
vent it to the outside. Attic fans can move large amounts of hot or humid air from an attic,
which can help keep your heating and cooling costs in check. Homeowners can gain more
control over ventilation by turning attic fans on and off as needed.

Powered Roof Vents

Powered roof vents work on the same principle as fans. Although a more expensive option,
powered roof vents can be configured to run off electrical or solar power. The added
mechanical force behind these roof vents can significantly increase air circulation, potentially
saving you money in the long run.

Gable Vents

A few vents, such as gable vents, serve as both intake and exhaust vents, depending on wind
direction and speed.

Roofing Vents: The Bottom Line

The key concept in proper roof ventilation, especially in Vancouver, is balance. To achieve
balanced airflow through your home’s attic spaces, you need the correct amount of intake and
exhaust vents. Roof intake and exhaust vents work together to help remove warm, moist attic
air and replace it with fresh, drier air while also trapping in hot air during cold months. In the
process, air pressure remains equalized.

If you notice any signs of improper ventilation in your home talk to us at Cambie Roofing. We
can check for airflow obstructions or see if you need additional vents of one type or another.
Also, make sure to discuss ventilation solutions with your roofing contractor before beginning a
roof replacement.

Blistering and alligatoring, DIY vs Qualified Roofer in Vancouver

What’s The Difference Between Blistering and Alligatoring?

by Roof RepairRoof Systems

Updated Aug 15, 2022
Originally Published August 15, 2020

What’s The Difference Between Blistering and Alligatoring?

Blistering and alligatoring are two common problems with most membrane roofing systems. Alligatoring is a cracking pattern in the roof’s surfacing that looks a lot like alligator skin.
That’s the reason we them alligatoring. Blistering is a slightly different phenomenon in which bubbles form underneath the roof’s membrane.
Blistering sometimes results in cracks or pops, but unlike alligatoring, the damage caused by blisters usually follows the length of the blister rather than forming a pattern.

Commercial roofs, in particular, require different repair and maintenance routines than residential roofs.
For starters, most commercial roofs are usually flat and this means they react much differently to sun, rain, ice, and snow which means alligatoring and blistering are much more common. Commercial roofs often require more frequent maintenance to ensure there isn’t any damage and if there is wear and tear, it is taken care of before it can spread.

What Causes Alligatoring?

Alligatoring is a sign that your roof is aging. Prolonged exposure to the elements damage the roof’s surface, and after about five years, the coating may develop small cracks. If left untended, the problem will get worse and spread across your roof.
Fluctuation in temperatures, ice, snow and sunlight shifts will cause new cracks to appear while widening the existing cracks.
Because these problems are common among some membrane roofing systems, you should make sure to get a roofing contractor to inspect your roof at least twice per year.

Is it possible to Fix Alligatoring?

Roof alligatoring is a sign that your roof is aging but it is possible to prevent alligatoring, and to repair small patches before they get so bad that you have to replace your roof entirely. First, a roofing contractor will need to apply a new coating to the roof. He will start by cleaning the roof thoroughly, making sure that all dust and loose particles are removed. After that, the contractor will apply a primer that is compatible with the roof’s original surface, and once dry, apply the coating itself. Embed strips of fiberglass mesh in the coating as you apply it to help increase its strength.

What Causes Blistering?

Blisters form when there are pockets of air or moisture trapped between layers of your roof’s membrane.
If left untreated, a blister can grow larger and allow more moisture to get in so that the problem gets worse until more extensive repairs and possible replacement is necessary…unless it pops! The origins of blistering are several. Among them, we count poor ventilation, trapped moisture or UV light.
As these pockets expand and stretch the membrane they form bubbles. In severe cases, the membrane will actually crack when the pressure becomes too great. Once blistering forms, the membrane stretches permanently, which allows for even more air or moisture to infiltrate the membrane layers.
This causes even more expansion. Each time the sun heats your roof, there is the potential for the blisters to grow a little larger.

How to Fix Blistering?

In general, blisters keep air in will keeping water, preventing serious water damage. This usually means unless the blisters have certain characteristics, it may be preferable to leave them undisturbed. Some of the blisters may pop, but most of them may not.
The question is, should we repair all of the blisters or only the blisters that have exposed?  There are certain circumstances in which you should repair the blister:

  • The paint or surface is coming off of the blistered area.
  • The membrane itself has cracked.
  • The blister is close to a seam and may cause the seam to open up.

To repair a blister

To repair a blister, cut away the membrane until you reach an area where the membrane still adheres to the roof tightly. You’ll then need to reapply new membrane material at least as many layers as you removed over the blistered area.
Make sure that the new membrane extends at least six inches around the edges of the blister to ensure that your patch remains leak-proof despite the expansion and contraction caused by temperature shifts. Alternatively, on a bitumen roof, our roofing contractor may be able to cut an “X” into the blister and then peel back the loose membrane layers. He will then fill the void underneath the membrane with bitumen and then press the membrane back into place. Keep in mind that this type of repair is only advisable if the membrane is otherwise undamaged and the blistering isn’t too great.

Prevention of Alligatoring and Blistering

It is possible to prevent roof alligatoring and blistering by scheduling regular inspections and keeping up on maintenance.
Regular inspections will help ensure you’re able to tackle any blistering or alligatoring problems before they become bigger problems.
Our roofing contractors can apply a protectant or reflective roof coating on a consistent schedule to prevent alligatoring and other damage from happening. While prevention represent an additional cost, it will save you money in the long run: Alligatoring and blistering are expensive to fix.
As noted, flat commercial roofs require a bit more upkeep than sloped, residential roofs, and it’s important to have them inspected at least twice a year if you want to extend the life of your roof.

Repair

If you’ve noticed small splits and cracks in your roof, it’s best to call a roofing inspector. They will likely tell you if the problem is worth fixing or if it can be left to be fixed at a later date. At Cambie Roofing, we give you a realistic picture of what needs to be done to your roof.
Some small hairline cracks can be filled by applying an appropriately rated energy sealing polyurethane, but in general, it’s best to just get rid of those troublesome sections as they appear.
Most roofs come with warranties lasting on average between 10 to 20 years and so if your roof is starting to show signs of damage, it may be covered under warranty. Property owners and homeowners looking for roof replacement or roof repairs can call Cambie Roofing for a free roof estimate.