A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof.
Bitumen roof insulation.
Expect to spend one or two days working with a helper to lay insulation and modified bitumen roofing for a 500 square foot roof.
Rigid roof insulation board.
Modified bitumen is compatible with petroleum and so it is possible that it could be installed overtop of an existing tar roof unlike rubber flat roofing which would be eaten away modified bitumen roofing is also very rugged and can sustain a fair amount of foot traffic.
In combination with bitumen it is used for flat roofs.
Provides high r value per inch in built up modified bitumen metal roof and single ply roof systems and utilizes an environmentally compliant blowing agent that provides high thermal insulation performance.
Mineral wool is also often used as a cover board in asphaltic roof systems because of its fire resistance and dimensional stability.
Firestone hailgard composite insulation is suitable for epdm tpo modified bitumen and metal roofing systems and specifically designed to protect against accidental punctures and hail.
This combination offers the typical advantages of multilayer composites in which the properties of the individual components complement each other.
Bitumen roofs are one of the longer lasting types of flat roofing materials easily lasting 20 years or more.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
Before you begin measure and make a drawing of your roof and consult with a dealer.
Aluminum foil is used as a vapor barrier for building insulation.
Mineral wool insulation can withstand the high temperatures of both hot bitumen application and heat welders making it ideal in some situations.
Closed cell polyisocyanurate foam core.