Some concrete is damaged beyond repair and the best way to repair the concrete surface is with a concrete resurfacer. The best concrete resurfacing material is the Quikrete Concrete Resurfacer (No 1131). The QUIKRETE® Concrete Resurfacer (No. 1131) is a special blend of Portland cement, sand, polymer modifiers and other additives. Designed to provide a shrinkage compensated repair material for making thin repairs to sound concrete in need of surface renewal. Can be squeegee, trowel or brush applied.
Once the concrete is cured, it is important to seal the concrete. You can opt for a water repellent sealer, or a protective coating. What’s the difference? A water repellent sealer, like a silane-siloxane sealer, will work entirely below the surface without changing the look or color of the concrete. It will cause water and other liquids to bead off the surface, protecting the concrete from damage caused by the absorption of water (spalling, mold, mildew). If you want a wet look, satin sheen, or high gloss coating, or if you require protection from oil, gas, or hot tire pickup, you need a coating. For exterior coatings, consider a solvent based acrylic and for interior coatings, an aliphatic polyurethane.
