Rigid Insulation Roof Voer Decking

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.

Rigid insulation roof voer decking.

This air seal is pretty darn good. Both install in the same manner but the foil faced product offers slightly more r value. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and high rise residential buildings. The purpose of the requirement that rigid foam installed above roof sheathing meet certain minimum r values is to ensure that the roof sheathing stays warm enough during the winter to avoid moisture accumulation and possible sheathing rot.

With a minimum of 70 recycled content the installed thermafiber products contributed to valuable leed credits helping the building earn a leed platinum certification. 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. Polystyrene foam and foil faced polyisocyanurate foam. Note that there was no air seal at this location originally.

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. Case study salesforce tower. After the roof deck is ready the rigid foam insulation is installed. The three layers of rigid insulation have yet to be installed over the top of the roof decking at this point.

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. Most unvented attics incorporate spray polyurethane foam spf on the underside of the roof deck and attic walls. Rigid foam insulation is available in two main types. The r value is a measurement of the heat loss and heat gain.

Foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.