Roof Foam Insulation Board

Polyurethane spray foam metal roof insulation in order to add moisture barrier under metal roof you can spray the undersides of the roof by using a thick layer of polyurethane spray foam.

Roof foam insulation board.

R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. It s light weight provides ease of handling. Some types of thicker foam board insulation are available but they may need to be special ordered. Click to add item johns manville fiberglass face polyiso roof decking insulation 4 x 8 to the compare list.

Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other. Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced. Rigid roof insulation board. Ft to the compare list.

Use closed cell spray foam closed cell foam board extruded polystyrene such as dow styrofoam or foil faced iso board. It will help you to eliminate problems that may come when the house becomes extremely cold in the winter and terribly hot in the summer. Insulating boards are just one of the many types of foam insulation. Seal the insulation or the ceiling surface below against air leakage.

You don t want moist air leaking into the roof cavity. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. Consider using spray foam insulation as well to seal smaller cracks and gaps. The rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets.