Using the skeleton gun, apply the caulk to the area under repair, ensuring that it makes full contact with the sides and back of the joint and is slightly proud of the surface to allow for shrinkage as it dries. The area to be filled should be no more than 20mm wide and 12mm deep. For larger holes, partially fill using Polyfilla Expanding Foam Filler before applying Caulk. Wipe off excess material with a damp cloth. Any smoothing should be carried out as soon as possible. Polyfilla Decorators Caulk should not be applied in wet or damp conditions or in temperatures less than 5degrees. Do not use below ground level, in areas of high abrasion or in contact with bituminous material.