BEFORE INSTALLATION, unroll and lay the decals flat. Make sure the surface is clean and dry. For an optimal, quality installation, make sure your home temperature is at least 70 degrees. Remove dust with warm, clean, water, using a damp cloth. Make certain the surface has dried completely before applying decal murals. For RECENTLY PAINTED WALLS, please allow 30-45 days for the paint to cure BEFORE applying decal murals. TIP: If for any reason your decal mural is reluctant to adhere to the surface, apply heat to the decal with a blow dryer to reactivate the adhesiveness. For more heavily textured walls, 3M General Purpose Spray Adhesive is recommended.