Visqueen Foil Backed Girth Jointing Tape is only available from us in the one size of 75mm x 50m. This product is a single sided tape that is reinforced with a foil back and a silver finish. It is used for sealing and bonding the overlaps of gas membranes in order to combat any potential leakage. It can also be used to join and seal membranes to gas proof courses at junctions with internal and external walls. It is very flexible and easy to apply. It is very tough and hard wearing. Visqueen Double Sided Tape is also available to buy from use, which is an easy and effective method of bonding and sealing Damp Proof Membranes at the overlaps.