Torch Down Roofing
The most frequently used type of materials for flat roofs are constructed using torch down roofing materials. Torch down roofing gets its name from the method by which it is applied. This commercial roofing technique involves installing sheets that overlap each other. The areas that overlap are then heated with a torch so they bond together.
The materials used in most torch down roofing applications are also known as rubberized asphalt. The melting of this overlapping bitumen by torching them together creates a very durable and highly resistant roof, which gives most torch down roofs an average lifespan of around 10-12YRS for a single ply.
The reason a large number of flat roofs are constructed with torch down roofing materials has to do with rubberized technologies that make them highly beneficial for flat roofs that might collect water in some spots. Older buildings might have drainage problems that cause small puddles to form, but with rubberized torch down roofing materials these puddles will dry on the exterior of the building, rather than drain through to the interior.
Though this highly water-resistant material might cost a little more than some other methods, it is still regarded as the best type of roofing construction for flat roofs that might not drain as rapidly as other types of commercial roofs.
An added benefit of torch down roofs is that there are no noxious fumes or other environmental hazards that the installer has to contend with.