Types of Flat Roof

One of the best roofing options for contemporary homes due to their modern, sleek design is a flat roof. But did you know that there are actually several types of flat roofing that you can choose from? Take a look below to see which one you think would be best for your home.

Built-Up Roof (BUR)
The traditional hot-tar-and-gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone. Once made of tar paper, these types of roofs gradually are using more-advanced materials such as fiberglass membranes.

Pros
– Gravel is an excellent fire retardant.
– Attractive for windows and decks that overlook the roof.
– It’s the cheapest of the four roof varieties.

Cons
– Very heavy.
– Joists sometimes have to be strengthened.
– Smelly and messy to install.
– Installation’s not recommended for occupied homes.
– It’s not a DIY installation job, and it is hard to find the source of leaks.
– Gravel can clog gutters and scuppers. Source: ThisOldHouse

Ethylene Propylene Diene Monomer (EPDM)
EPDM roofs are made of rubber. The material used is very durable and looks a lot like the material used in inner tubes. There are 3 different ways to install EPDM or rubber membrane roofing. It can be anchored using fasteners, ballasted or glued down.

This material is one of the easiest of the different types of flat roofing. Leaks in this type of roofing are fairly easy to patch and the material is light weight, but very durable. However, this material is slightly more prone to puncture than other types. The black version of this form of roofing soaks up a great deal of sun and is not generally recommended for extremely hot climates. There is a lighter version for hot climates, but it is much more expensive. Source: DoItYourself

Sprayed Polyurethane Foam (SPF)
Sprayed polyurethane foam is a relatively new product that is sprayed onto the roof as a liquid in order to form a single, continuous, seamless structure. Because foam is flexible and lightweight, it’s perfect for irregularly shaped roofs and protrusions. For re-roofing, SPF also eliminates the need to remove the previous roof, since it can be applied directly over existing roof installations, including asphalt shingles, built-up roofs, clay tile, concrete, metal, and wood. Foam roofing systems are easy to maintain, and with a high insulation value, they can combat some of the heat issues common with flat roofing. The only downside is SPF’s track record. It just doesn’t have much of one yet, so you’re taking a little bit of a risk by going with this product. Source: HomeAdvisor

We can help you choose the type of roofing design and materials that will fit your location, style, and budget. Call us for a free estimate!

 

Contact:
Kerrisdale Roofing & Drains
8296 Ross St, Vancouver, BC V5X 4C6
(604) 360-2114

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