These plaster stones have a flat back for easy installation and since they are plaster, they are easy to cut with an exacto knife and you can use sandpaper too. We recommend gluing these down with a white glue first. Dry. Then spray them with a matte finish sealer. Dry. Then grout in between with mortar we use Magic Stucco . Dry. Spray again with matte finish sealer.
Each package covers about 72 square inches