Foam Roof Boards

Types of insulating boards.

Foam roof boards.

Tapered expanded polystyrene eps roof insulation was developed more than 30 years ago with a dual purpose in mind. Insulating the roof with polyiso foam boards. 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. Retroplus roof board is an expanded perlite mineral aggregate board.

Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency. After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on your roof. 1 in x 4 ft x 8 ft ap foil 1 faced polyisocyanurate foam board insulation item 101645 model 90001019. Long fastenmaster s headlok screws work great for screwing down 2xs or sheathing over thick foam.

Using the perimeter marks for the ceiling joists chalk lines were snapped to indicate where to screw down the sheathing. Johns manville r 6 common. Retrofitting an insulated cold roof. The washer head style has good holding power.

Rigid roof insulation board. 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. To drain and insulate dead level roof decks. Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc.

The panels need to fit together tightly to help prevent warm air from leaving the top of the building. 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. Gba editor mike guertin apr 08 2015 09 38pm 15.

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. Rigid foam insulation also known as insulating boards provide high r values. They keep your home at a comfortable temperature without the need to crank your heat. Washer head extra long screws up to 18 in.