TOUCHSTONE PU SCRATCHCOAT NON UV RESISTANT 25kg Sets (10-30 sets) This versatile scratch coat is ideal as an underlayment for both our PU self smoothing ranges. It can also be used as a flexible membrane under sand or stone screeds. This product has a hardness dependent on its final use. For an economic finish in lighter use areas the Touchstone scratch coat can be applied at 3.5-4 kg/m2 and finished with a UV resistant coloured coating. Please note all Polyurethane coatings and self smoothers need a suitable primer before a scratch or body coat is applied. This gives the required adhesion and seals against any unfavourable reactions between the substrate and the coating. Touchstone is able to offer varying degrees of hardness to suit differing applications. We offer the following hardness ranges. All our PU coatings require a final matt coating. D60 Non UV Polyurethane Self Smoother Industrial / Heavy Commercial D45 Non UV Polyurethane Self Smoother Light Commercial D50 UV Stable Polyurethane Self Smoother Domestic / Sports Floors / Light Commercial