Flat Roof Foam Board

Cost of rigid foam board insulation.

Flat roof foam 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. 458 recognize foam control plus 150 up to 6 7 and foam control 100 up to 10 being installed directly over steel roof decks along with a class a b or. 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. After the roof deck is prepared the rigid foam boards need to be cut to size to fit snugly together on your roof.

Ul evaluation report er11812 01 and ul roof deck construction no. Energyguard tapered polyiso foam roof insulation. The most efficient and best insulation used is rigid foam polyiso. Usually homeowners spend about 25 of the total cost to install a flat roof on high quality insulation.

R matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. Retroplus roof board is an expanded perlite mineral aggregate board. Attach to deck board. 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.

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. However most cathedral ceilings and low slope flat roofs are insulated roof assemblies. Rigid roof insulation board. Run vertical 2 3 boards battens over roof sheething 16 o c.

Insulated roof assemblies can be vented or unvented. Rigid foam is produced in various size panels 4 ft x 8 ft 4ft x 4ft etc. Composite insulation reduces the need for a cover board when applying different membrane roof coverings. Engineering design board layouts are available from your plans and field verified dimensions.

With this kind of roof the insulation follows the slope of the roof. Composite insulation works in flat and low sloped roofs with a variety of roof coverings. Iso is available in a range of thicknesses that come in increments of 1 inch. This will create ventilation and separation between attic roof substate and the roof itself.

Foam control plus and foam control flat roof insulation are recognized for use in direct to deck applications. It accounts for over 60 of all installs.