This Thompson's Emergency Instant Repair spray is a specially formulated, sprayable mastic that immediately seals and repairs water leaks on a variety of roofing materials. Suitable for use in adverse weather conditions the formula displaces moisture ensuring a watertight bond with virtually any roofing material. The unique thickening system immediately structures on contact ensuring gaps and cracks are filled and repaired giving instant protection against water ingress. Developed to flex with the natural movement of the substrate Thompson's Emergency Instant Repair resists cracking and splitting ensuring protection against future leaks. Suitable for use on leaking roofs, guttering, pipes and drains and on caravans, garden sheds and greenhouses. Suitable for use on tile, slate, metal, asphalt, felt, wood and plastic. Size 450g Colour Black