GARDZ Problem Surface Sealer is a unique water-base sealer for porous and potential problem surfaces. It is formulated to deeply penetrate and dry to a hard, moisture resistant film that seals and binds down porous, chalky and crumbling surfaces, paints and texture finishes. GARDZ is recommended for: damaged drywall, new drywall, spackling and joint compound skim coats, plaster, calcimine, uncoated wallpaper, wallcovering adhesive residue, texture paint, popcorn ceilings and builder's flat paint. Repairs torn paper on damaged drywall, eliminates bubbles. Seals skim coats & spackling. Protects new drywall. Seals old wallpaper adhesive. Easy to apply, high spread rate, fast drying. Water-base, low odor, dries clear. Gallon. Rustoleum / Zinsser Corp