![]() Rain control is typically addressed using a shingle lapped and/or taped water control layer such as building paper or a synthetic WRB (i.e. Rain Control: Rain leakage into the enclosure is the leading cause of premature building enclosure failure. ![]() Typical Insulation: EPS foam is the most common, but SIPs have also been constructed with XPS and polyisocyanurate foam cores. 1 It is relatively easy to achieve a high level of airtightness on a SIPs enclosure. foundation walls or roofs) and penetrations such as windows, doors and services. The whole-wall R-value depends on thermal bridging through vertical stiffeners, top and bottom plate, as well as the wood bucks for windows and doors.Īir Leakage Control: Both OSB and EPS foam are air impermeable so there is no air leakage through the center of the SIPS panels however it is important to address the air tightness of joints between the panels as well as interfaces with other structural elements (i.e. Whole-wall R-value: Using two dimensional heat flow analysis with thermal bridging effects and average framing factors, the clear wall R-value with the OSB layers, drywall, cladding, and surface films often has an R-value higher than the installed insulation R-value because of fewer thermal bridges in the wall system. It is possible, although not as common, to use different insulation types, and thicker panels to achieve high R wall values. The most common SIP insulation thicknesses are 3 1/ 2” and 5 1/ 2” and are equivalent to R-14 and R-22. Installed insulation R-value: Structural Insulated Panels (SIPs) are typically constructed using OSB panels adhered to both sides of an expanded polystyrene (EPS) foam insulation core.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |