Foam Board Roof Insulation

Insulated roof assemblies can be vented or unvented.

Foam board roof insulation. There are three basic foam insulation board products on the. In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. Retroplus roof board is an expanded perlite mineral aggregate board.

It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. 0 56 in x 4 ft x 8 ft. 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. 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.

Click to add item johns manville fiberglass face polyiso roof decking insulation 4 x 8 to the compare list. R 3 2 polyisocyanurate rigid foam insulation board r matte plus 3 thermasheath 3 is rigid foam r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Click to add item insofast exi 2 5 r 10 eps foam board insulation panels 40 sq. Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets.

Kingspan insulation r 3 common. Foam board insulation types. 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 foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc.

0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497. Some types of thicker foam board insulation are available but they may need to be special ordered. 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. Not only does it provide high r values but foam board insulation is also easy to install lightweight and can be used in any room of your home.

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Rigid roof insulation board. There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing. The panels need to fit together tightly to help prevent warm air from leaving the top of the building.

Rmax r matte plus 3 1 2 in.