Remove all loose particles before applying Repair Express Plaster. Coat nail heads or other materials with a coat of paint before applying Repair Express plaster. This is to prevent discoloration due to rust afterwards. Apply the sealant with a caulking gun or putty knife. Finishing with a wet spatula gives the best result. For large cracks, static connections or large screw holes, apply two coats of the product. Apply the second coat of the product about 1 hour later. Depending on the amount of material applied, the product can be painted after 15 minutes to several hours. Cleaning: Remove with water before curing. Finishing: Finish with a wet putty knife for best results. Repair: with the same material.