Rigid Foam Insulation Attic Roof

A rigid foam board works by trapping air making heat conduction more difficult.

Rigid foam insulation attic roof.

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends. 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. That s not a problem with foam board insulation.

The superattic system creates a continuous air and insulation barrier directly beneath the attic roof with no thermal bridging to compromise energy. Heat can be transferred by three methods radiation convection and conduction. Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. Spray foam pink fiberglas vs.

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. When the sun s heat hits your roof that heat is radiated across the roof. For the same reason insulation shouldn t touch the roof s underside. In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions.

This requires the use of soffit vents and a roof ridge vent to. How does rigid foam board work. 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. This construction approach was first used in the 1970s and it has been implemented much more widely since it was first included in the international code council s icc model building code in 2007 irc section 806 4.

Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. When installing rigid insulation in an attic to be finished as a living space you must provide a route by which hot air can escape. Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls.