Largest manufacturer and least expensive sip panels on the market.
Structural insulated roof panels r value.
More importantly because all types of sips have solid insulation completely enclosed with wood sheathing they are not subject to any convective currents like fiberglass insulation.
Extreme s pre insulated sips offer an option for a high performance roof framing solution that is 15 times tighter than conventional construction practices making it easier to control indoor air environment.
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.
Designed to enclose timber frame structures log structures and conventional buildings this one piece product is completely structural and can substitute for conventional framing in most applications.
Calculated r values for generic structural insulated panel sip including 7 16 oriented strand board osb on each side.
Expanded polystyrene eps is type i per astm c578 11.
The most affordable sip panel solution on the market.
Then there is the r value of a whole wall or roof once the product is actually installed effective r value.
Extruded polystyrene xps is type iv type x per astm c578 11.
New construction or adding insulation when replacing an existing roof.
Raycore s structural insulated roof panels are the easiest quickest highest r value per inch.
The r value of each osb facing is r 0 55.
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.
Expanded polystyrene with a stated r value of r 3 9 per inch at 75 f was tested at r 4 2 at per inch at 50 f and r 4 4 per inch at 25 f.