Roof Sip Panel Over Decking

Specifying a cold roof or simply over sheathing the roof with an additional layer of osb staggered over the panel joints will eliminate the possibility of shingle ridging.

Roof sip panel over decking. Raycore s insulated roof panels and insulated wall panels are far superior than other sips with highest r value custom blend of polyurethane foam insulation wrapped in a foil radiant barrier and producing a superiorly strong lightweight do it yourself diy friendly sip panel. Combines framing insulation and sheathing for exceptionally short construction time. Several assemblies that prevent shingle ridging are described in the builder s guide to structural insulated panels sips. 4x8 up to 8x24 featuring an unfinished eastern white pine these panels have 1x8 pine decking glued and stapled to the oriented standard board that has been laminated to an expanded polystyrene core.

The pitch of the roof is very low only 1 2 inch in 12 and the metal roofing has been applied directly over the sips with no air channel beneath the roofing for ventilation. The ridges caused by the expansion of sip roof panels may be an aesthetic blemish but it does not affect the performance of the roofing or the sip roof panels. There is no attic space to ventilate and the roofing must be applied to the top surface of the insulated sip panels. For that reason good sealing which prevents moisture from inside the home reaching the outer decking is very important.

Matt melton lives in central washington state in a 3 year old house with a roof made of structural insulated panels sips that are 12 1 4 inches thick. Even though the roof has an r value of 50 and there is 11 1 4 of eps foam between the panels i have heard war stories from people who suffered moisture damage to the top skin 1 2 osb of the sip after a few years. Spread 6 mil visqueen roofing felt or other vapor barrier over entire roof decking surface under panel. Build for the future with extreme s structural insulated panels sips the high thermal values and strength properties of extreme s sips are highly beneficial for roof construction.

If no decking is specified underside of panels should be taped with 3 vapor proof tape and all joints checked and filled for a tight seal to prevent air infiltration or moisture transfer. Open beam ceiling installation. Snap n lock steel structural insulated panels sips are high performance building panels for floors walls and roofs in residential and commercial buildings. Largest manufacturer and least expensive sip panels on the market.

This look is clean smooth and quite attractive upon completion. Log and timber frame sips panel structures pine tongue groove sizes available.