PAROC XSI 004 sealant insulation strip is glass wool insulation for use as a thermal insulation sealant; for example, around windows , doors and block masonry. The thin and soft insulation strip is easy to handle and install to different kinds of applications. With PAROC XSI 004 you can also insulate the cavities and gaps between different construction parts. The PAROC XSI 004zdy is in a pack suitable for DIY (Do it yourself) customers.