Damp-proof courses and structural assemblies including damp-proof courses

A kit for use in building construction, comprising a damp-proof course for use at the end of a cavity wall of a building structure which abuts the frame of a door or window, comprising a strip of corrosion-resistant, moisture impermeable material having a constant cross-section throughout its length, and providing two web-like elements arranged at an acute angle in the range 45.degree. to 90.degree. with respect to each other, whereby each of said web-like elements has an inside face and an outside face, each of said two webs having at least one undercut formation on its inside face and at least one undercut formation on its outside face, each of said undercut formations providing anchorage for wall ties at any position along the length of the strip, at least one of said webs also having a moisture barrier formation on its inside and extending throughout the length of said strip, and a stop element in the form of a strip of constant cross-section throughout its length, the cross-section shape of said stop element providing it with a formation such that it can be located in an undercut formation in said damp-proof course strip in either of two orientations, said stop element having a shoulder portion, which exhibits two oppositely facing abutments external to said damp-proof course strip when said stop element is in position on said damp-proof course strip, said shoulder portion being so arranged that said oppositely facing abutments occupy alternative locations relative to said damp-proof course strip in the alternative orientations of said stop element.