This is a self adhesive stencil kit, with complete instructions. Use this to complete a realistic stone veneer finish on almost any material. Paint - additional - your undercoat color, for your grout look, any grey or white will work great. Then layout the self adhesive stencil - provided. Mix the powder - provided - with water, for a wet cement thickness. Spread the mixture on and remove stencil, while wet. Let dry for 6 hours. Finish with a sealer, if desired.