Foam Roof Boards

Retrofitting an insulated cold roof.

Foam roof boards.

Gba editor mike guertin apr 08 2015 09 38pm 15. Using the perimeter marks for the ceiling joists chalk lines were snapped to indicate where to screw down the sheathing. Washer head extra long screws up to 18 in. Rigid roof insulation board.

After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on your roof. Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to retroplus roof board on one side and a glass reinforced facer on the other. 1 in x 4 ft x 8 ft. The panels need to fit together tightly to help prevent warm air from leaving the top of the building.

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. Tapered expanded polystyrene eps roof insulation was developed more than 30 years ago with a dual purpose in mind. They keep your home at a comfortable temperature without the need to crank your heat. Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc.

Install it anywhere from the roof to the foundation. The washer head style has good holding power. Adding the roof sheathing sheets of 4 x8 osb were then laid directly on top of the rigid foam insulation boards leaving small gaps per the manufacturer s recommendation to avoid buckling at the seams. Retroplus roof board is an expanded perlite mineral aggregate board.

Long fastenmaster s headlok screws work great for screwing down 2xs or sheathing over thick foam. Insulating the roof with polyiso foam boards. 1 in x 4 ft x 8 ft ap foil 1 faced polyisocyanurate foam board insulation item 101645 model 90001019. You can even place it under the foundation slab.

Manufactured from lightweight foam control eps tapered expanded polystyrene eps roof insulation is a value engineered system that has been proven in new and reroof applications all over the country. Johns manville r 6 common. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. Rigid foam insulation also known as insulating boards provide high r values.