Weight Of Spray Foam Roofing

Lpa 2500 lpa 2800 and lpa 3000 spray foam roofing can also be applied to vertical surfaces making.

Weight of spray foam roofing.

Compared to other roofing systems spray polyurethane is a very lightweight option. Spray foam roofing has become a particularly popular solution in the commercial roofing industry but that doesn t mean it can t be right for your residential roof. Spray foam that s used for a roofing system weighs about one pound per square foot. Now more than ever architects are beginning to use materials and design features more common in commercial construction when building domestic homes so spray foam has a.

Low density foam is applied as a low pressure or high pressure two component spray foam. A 3 in thick layer of open cell spray foam has a permeance grade of 16. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. Spray foam insulation comes in two types open cell and closed cell.

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. Open cell spray foam insulation. This weight is measurement of 1 square cubic foot piece of the foam. This includes foam being sprayed about 1 5 thick with about 20 25 mils of silicone coating on top with embedded granules.

The open cell structure of low density spray foam insulation give flexibility to the hardened foam. You ll find it used for ceilings walls and roofs. So a 3 inch layer of foam 12 inches by 12 inches should be approximately 1 pound. The movement of air into indirect conditioning of an unvented attic is a slow gradual process that will not be noticeable by occupants and typically will not put any strain on the hvac system.

You need to login to reply to this topic. 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. Please click here to login. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used.