Size:32 Ounce Mix 1 Part of Xtreme Hard to 4 Parts Water Xtreme Hard is a highly reactive colloidal silica based densifying agent. The colloidal silica molecule has more reactive sites, so it goes to work quickly (within 1-2 minutes). Spray it on concrete until the surface is saturated, then agitate with a soft bristle broom. Wait until dry (45-60 minutes) Easy to apply (soft bristle broom) Low Maintenance Stops Dusting Eliminates Mold LEED Compliant Xtreme Hard is a green, clean and safe material. It's low pH formula (pH approx 8.7) is safe to handle. Xtreme Hard emits no VOC's (Volatile Organic Compounds) and eliminates the hazardous -material disposal, so it's better for the job site and friendlier to the planet. Xtreme Hard is shipped as a concentrate. One gallon of concentrate makes 5 Gallons of ready to use product. Xtreme Hard is the lowest cost densifier per square foot
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