Abstract: A carpet joining tape comprises two strips of metal foil (13, 16) which overlie each other and are separated by an electrically insulating material (14), such as a paper strip. The superimposed metal foil strips (13, 16) and interposed electrical insulating material (14) are secured together so that an electric current can be passed through both strips (13, 16) in series to resistively heat the strips (13, 16) so as to melt a heat softenable, carpet bonding adhesive (19). The metal foil strips (13, 16) and electrical insulating material (14) may be secured together and to a base insulating strip (11) beneath the lower foil strip (13) and to reinforcing material (18) on the upper metal foil strip (16) by lines of stitching (21), and a layer of carpet bonding, heat softenable adhesive material (19) is disposed on the upper surface of the upper metal foil strip (16) and reinforcing material (18).