Bitumen Torch Down Roofing

This membrane contains a core of nonwoven polyester mat that resists splits and tears.

Bitumen torch down roofing.

Gaf tri ply app smooth is a strong resilient membrane that is suitable for new or reroofing projects as well as for use as flashing. App torch down roofing membranes are flexible and respond well to both heating and cooling. The mat is coated with durable app modified bitumen and is designed for torch down application by professional roofing. But torch down roofing isn t for everyone or every home.

Coated modified bitumen rubber roof. The first polymer used for this purpose is atactic polypropylene app which is a form of plastic not rubber. Apply the bitumen by melting it over fiberglass mesh with a propane torch. Bitumen roofing is also available in 1 2 or 3 ply.

It consists of multiple modified bitumen membranes applied with a propane torch. As long as it is installed correctly bitumen prevents moisture build up without needing constant maintenance. While it can last up to 20 years installing torch down roofing can be a dangerous process and as such tends to cost more than traditional roofing materials. This 25 year old 2 ply modified bitumen torch down rubber roof coated with aluminum asphalt paint which is meant to protect the surface against harmful uv rays it has had many years of scattered debris foot traffic from a rooftop a c and ventilation units being serviced yet there is no indication that repairs have ever been needed.

Torch down roofing is a popular type of flat roof system. The membrane is available with a smooth surface. Ruberoid torch smooth membrane is backed by gaf a company with over 130 years in the roofing business. Torch down roofing consists of modified bitumen which is similar to asphalt.

Manufacturing torch down roofing requires modifying or mixing the bitumen with a polymer. The 1 ply material is not durable and if used can pose certain problems such as breaking down prematurely while the 2 and 3 ply material roofs cost significantly more to install which can make this one of the most costly types of flat roofing products around.