Polyurethane Rigid Foam Roof Insulation

Phenolic foam spray insulation.

Polyurethane rigid foam roof insulation.

Phenolic foam insulation r values. 4 5 21. A thick typically 1 5 thick closed cell polyurethane waterproofing barrier seals the roof against leaks. In spray foams this takes place in the.

There are three basic foam insulation board products on the. Very good air bypass leak sealing properties. Spf roofs are installed by spraying a liquid on the existing roof and allowing it to expand into a foam. Rigid foam insulation installation prepare roof deck.

The dura foam roof system has a rigid and durable surface that you can walk on. The bottom layer of a single ply membrane roofing system is the roof deck or substrate. Polyurethane spray foam insulation is formed when two chemicals diisocyanate and polyol are mixed together in the presence of suitable catalyst and activators. Examples include 1 polyisocyanurate roof insulation and spray polyurethane foam roofing systems directly applied to steel roof decks 2 some.

R matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Foam roofs are lightweight durable and seamless. The roof deck can be plywood metal concrete or wood planks.

Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck. Insulation s r value is a measure of its effectiveness and a single 1 inch sheet of polyurethane foam gives you an r value of 5 5 to 6 5 according to the u s. Spray polyurethane foam spf is the only roofing material that has no seams. Some polyurethane and polyisocyanurate foam insulations and systems have earned various building code acceptances for use without a thermal barrier as a result of this large scale fire testing.

It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer. After cleaning the existing roof the spf roof can be applied directly over asphalt shingles concrete metal and wood. Corrosion problems when in contact with steel roofing moisture. This process means that the foam can conform to all roof shapes and types even irregularly shaped roofs.

I ve written several posts about how to insulation basement walls in which i promote the use of foam board insulation as the first line of defense against moisture and mold. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. Supply of labor and materials for the insulation of roofing using the spray application of rigid polyurethane foam. The first step with roof installation is to prepare the roof deck by getting rid of all dirt dust and contaminants.