Foam Roof Boards

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.

Foam roof boards.

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. Foam boards insulate as well as a sprayed foam roof. 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. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency.

The washer head style has good holding power. After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on your roof. Gba editor mike guertin apr 08 2015 09 38pm 15. Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc.

Washer head extra long screws up to 18 in. Rigid foam insulation also known as insulating boards provide high r values. 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. 0 75 in x 4 ft x 8 ft r matte plus 3 1 faced polyisocyanurate garage door foam board insulation item 15330 model 15330.

A foam roof can last the life of your building. Retroplus roof board is an expanded perlite mineral aggregate board. Using the perimeter marks for the ceiling joists chalk lines were snapped to indicate where to screw down the sheathing. Polyurethane is often used in the soles of shoes due to its extreme durability.

Install it anywhere from the roof to the foundation. You can even place it under the foundation slab. 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. Foam roofing has already stood the test of time and its a fact.

Long fastenmaster s headlok screws work great for screwing down 2xs or sheathing over thick foam. Types of insulating boards. Retrofitting an insulated cold roof. They keep your home at a comfortable temperature without the need to crank your heat.

Rigid roof insulation board. Attach to deck board. 0 75 in x 4 ft x 8 ft.