Weight Of Spray Foam Roofing

The urethane spray foam roofing system is proven to be one of the best and it s the only seamless roofing system available.

Weight of spray foam roofing. A spray foam roof can be the last roofing system you ll ever need on a building. How does spray foam s weight compare with other. Lpa 2500 lpa 2800 and lpa 3000 are a two component closed cell polyurethane foam system specifically designed to provide a high performance light weight roofing system for use over a wide variety of roof deck construction and configurations. The foam never gets touched and never loses r value.

It is spray applied to a substrate and typically expands about 150 times its original volume to form a semi rigid flexible non structural plastic insulation. Since a spray foam system consists of spray foam coating and granules after 10 20 years some of the coating and granules will naturally wear away. Open cell spray polyurethane foam also sometimes referred to as low density or 1 2 pound spf weighs between 0 4 and 0 6 pounds cubic foot when fully cured. At year 10 20 a contractor will add more coating and granules.

Larry typically roofing foam is 2 7 to 3 pound foam. So a 3 inch layer of foam 12 inches by 12 inches should be approximately 1 pound. Spray foam is also great as a roofing system for flat and low slope roofs. It is monolithic one single piece with no laps or seams.

Urethane roofs provide excellent insulation for your building paying for themselves within 4 to 10 years depending on if the facility is heated and air conditioned. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. 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. Compared to other roofing systems spray polyurethane is a very lightweight option.

A spray foam roof is also extremely light weight and can often be applied over existing roofs without costly tear offs or displacement of roofing felts containg asbestos acm. This weight is measurement of 1 square cubic foot piece of the foam.