Why Torch Down Roofing System?
Torch down roofing is so named because it requires an open-flame propane torch. In this installation method, sheets of modified bitumen are rolled out onto the roof, and a roofing professional uses a hand-held propane torch to heat the material and adhere it to the surface. Once the layers reach the right temperature, seams are melted together to create a waterproof seal.
The membrane layers of a torch down roof are made of an asphalt compound called bitumen that is modified with either rubber or plastic. The main strength of this type of roofing is that it can expand and contract without melting or cracking. It has a high tolerance for both the heat and the cold it will experience on the roof during the change of seasons. There are different types of torch down roofing including two-layer and three-layer systems.
Benefits of TPO Roofing System
Water Resistance: The first job of any roof is to keep water out of the building below. With flat roofs, this job becomes much harder to do. This is especially true in regions where snow builds up on the roof and may melt off very slowly. Heat-sealed seams and ultra-waterproof membranes make torch down roofing one of the most highly water-resistant flat roof systems. When installed correctly by a roofing professional, torch-on roofing prevents water from collecting and pooling on the roof and promotes drainage. Torch down roofing is also ideal in protecting structures from damage from snow buildup.
Flexibility and Durability: One of the most significant benefits of torch down roofing is its flexibility. The modified bitumen sheets expand and contract as the temperature changes, without cracking or splitting. Where other roofing materials are rigid and may be damaged by changing temperatures, torch-on roofing works well in any climate. This flexibility makes torch down roofing durable and long-lasting. Torch down roofing also has a consistent thickness (about 3-4 mm) across the entire roof, unlike other roofing materials that may vary in thickness. This conformity across the roof surface makes for a more durable roof.
Life Span: The lifespan of a torch down roof is one of its main selling points, at 15 to 20 years. Torch down roofing is more long-lasting than some other types of flat roof systems. This is due to its flexibility in hot and cold temperatures, as well as its resistance to water damage.
Fire Resistance: Especially with a granulated cap layer, torch down roofing can be highly fire-resistant.
Easy Repairs: Last, but not least, torch-on roofing is very easy to repair when compared to other roofing materials. Because it rolls on and can be sealed relatively quickly, the process is less intensive and less expensive than fixing different types of roofs.