Rigid Insulation Roof Voer Decking

Note that there was no air seal at this location originally.

Rigid insulation roof voer decking.

Polystyrene foam and foil faced polyisocyanurate foam. We re proud to say our products can be found in some of the tallest and safest buildings around the globe like salesforce tower. This air seal is pretty darn good. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.

With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. Install nailbase for cladding. The three layers of rigid insulation have yet to be installed over the top of the roof decking at this point. It is an acceptable practice to install a new roof over an existing roof membrane system provided that the roof deck is structurally sound and has been properly prepared to support the added load.

Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation. An excellent fire barrier densdeck roof boards feature a noncombustible core and inorganic surface that offer greater fire protection than other conventional commercial roofing products when applied over combustible roof decks and steel decks. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and high rise residential buildings. After the roof deck is ready the rigid foam insulation is installed.

Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls. Case study salesforce tower. Both install in the same manner but the foil faced product offers slightly more r value. Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers.

Rigid foam insulation is available in two main types. 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.