Angular Silica Sand | 50 Mesh for Acrylic Patch Binder and Resurfacer 1600 × 1200 How Important Is Silica Sand In Tennis Court Paint and Coatings? Angular Silica Sand | 50 Mesh for Acrylic Patch Binder and Resurfacer Angular cut silica sand is ideal for tennis court patching and resurfacing coats. The 50-60 mesh size and angular cuts key together and fill asphalt voids.