How strong are SIPs?
The structural characteristics of SIPs are similar to that of a steel I-Beam. The OSB skins act as the flange of the I-beam, while the rigid foam core provides the web. This design gives SIPs an advantage at handling in plane compressive loads.SIPs can be engineered for most applications. Detailed information on the structural performance of SIPs is available from SIPA member manufacturers.