For use on exterior wood decks, siding, fences and trim. Also suitable for use on shingles, shakes and roofs. Especially effective on rough-sawn surfaces. Stain is a deep-penetrating, oil-based stain that beautifies and protects exterior wood. Water repellent, mildew-resistant, and when properly applied, won't crack, peel or blister. This warranty excludes all incidental or consequential damages.