TILE RESCUE Injection Repair Adhesive is a Professional Strength, Very Fluid, Adhesive designed to re-bond and permanently save those loose and hollow, crunchy sounding tiles without removal. Coverage: One 10.5 oz. TILE RESCUE Injection Repair Adhesive covers approx. 4 sq. ft. Directions for Rescuing and Repairing Loose & Hollow, Crunchy Tiles: 1.Using a masonry drill bit whichever is largest drill 3-5 injector holes through the grout line around each side of the tile. Do not drill into the subfloor. 2.Vacuum over each hole to clear, tapping with rubber hammer to help loosen debris. 3.Place TILE RESUCE tip into injector hole to measure for largest cut point so tip does not rest onto the subfloor. Cut the tip. 4.Using a standard caulk gun squeeze TILE RESCUE into each hole. Squeeze slowly and don't apply too much pressure. If one hole is blocked move on to inject the other holes. Sometimes you will see TILE RESCUE come up out of nearby holes and grout lines. This is good as it ensures complete coverage of the problem area. If no adhesive comes out of nearby holes it's ok, simply tap the tiles to check the hollow sound is now solid. 5.Wipe up excess TILE RESCUE with clean, wet sponge as necessary. Place weighted objects over Rescued tiles and allow to dry for a minimum of 12-24 hours, dries clear. 6.When dry re-grout over injected holes, will adhere to existing grout. After grout has dried wipe clean with damp sponge. Your floor has been Rescued by TILE RESCUE! Solid! GUARANTEED! 100% ECO-FRIENDLY, LOW VOC's, NON-HAZARDOUS, NON-FLAMMABLE Can be used on small areas or the entire floor! Fix Your Floor Today For all Loose & Hollow Tile, Marble, Stone, LVP & Wood Floors!