Manufactured from fiberglass yarn, Karnak 31 GRP fiberglass membrane tape is designed to work alongside Karnak’s 19 Ultra roof repair for extra support and strength. The waterproofing fabric is highly flexible so will contour to bends, cracks and shapes in the substrate without compromising on performance.

Acid and alkali resistant, this Karnak 31 tape won’t rot or decay and has been treated with a synthetic resin for application on asphalt, tar and all accepted waterproofing and coating compounds.