Flat roofs are a bit more challenging to work with than more conventional roofs. Unlike traditional roofs, they have cwet little elevation, usually only having a roof pitch of one-fourth to one-half inch per foot. So, instead of rainwater sliding off your flat roof, it stagnates, eventually seeping into the shingles, rotting the underlying layers and causing leaks. Water run-off might also seep into the siding, gutters and, eventually, your house’s foundation. To prevent such a scenario from happening, you need to coat your flat roof with a water-resistant material.
There are also fewer options for flat roofing. To help you find the material that will address your needs, Any Weather Roofing shares some of the most common flat roofing materials.
Single-ply roofing, the preferred option for commercial roofing contractors doing flat roof installations, has three types: Polyvinyl Chloride (PVC), Thermoplastic Olefin (TPO) and Ethylene Propylene Terpolymer (EPDM).
Each material has its advantages, with TPO having strong weatherproofing properties and PVC being known for its ease of installation. But in general, single-ply roofing has the advantage of being incredibly durable due to being resistant to fire, chemicals, ultraviolet (UV) rays, fire and the weather. And for the environmentally conscious, this type of roofing would be an eco-friendly choice, thanks to the fact the material lasts for a long period of time and is recyclable.
This type of roofing’s biggest draw is its seamless application. It can coat the entire roof, including all protrusions, without creating seams, resulting in a highly leak-resistant roof.
Modified Bitumen Roofing
Modified bitumen is well known for being tear-resistant, in addition to its waterproof properties. Environmentally conscious building owners also have the option of creating a more energy-efficient roof: after undergoing treatment, the top layer can better reflect sunlight and release absorbed heat.
Also known as tar and gravel roofs, built-up (BUR) roofs are made up of layers of bitumen and reinforced fabric, with a final layer, which is usually made from gravel, providing protection from wind and fire.