Densoclad Tapes consist of a thick polymer bitumen adhesive, giving superior adhesion and flexibility, laminated to a tough plasticised PVC backing. The PVC thickness is selected to give several grades to suit different requirements of mechanical strength and conformability. The adhesive layer is protected by an interleaving, wider than the tape, which is discarded during application.

Densoclad 40 HT, Densoclad 50 HT and Densoclad 70 HT are available for use in temperate climates. Also available is Densoclad 70S which has a stiffer PVC backing.