As wood naturally offers heat protection, it is easy to build highly effective and comparatively thin external walls with protection materials, which in turn also saves on gross floor space. All types of protection material can be combined with CLT elements. Our “Technical folder CLT" provides information about the respective structural connections. You can find information about insulation ratings in our “Building physics catalogue” (see Technical folder CLT) and at www.dataholz.com, where you can discover a large number of popular layer structures. Popular U-value programs can also be used to calculate individual layer structures.