Foam Board Roof Insulation

Click to add item insofast exi 2 5 r 10 eps foam board insulation panels 40 sq.

Foam board roof insulation.

In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. Retroplus roof board is an expanded perlite mineral aggregate board. 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. Foam board insulation types.

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. 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. Insulated roof assemblies can be vented or unvented.

0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. 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 johns manville fiberglass face polyiso roof decking insulation 4 x 8 to the compare list.

Ft to the compare list. There are three basic foam insulation board products on the. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. 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.

The panels need to fit together tightly to help prevent warm air from leaving the top of the building. 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. Rmax r matte plus 3 1 2 in. 0 56 in x 4 ft x 8 ft.

Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc. Foam board insulation is easy to use and is a great diy way to add some insulation. Some types of thicker foam board insulation are available but they may need to be special ordered. 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.

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.