Concrete Hardener

Xtreme Hard Concrete Densifier and Hardener Strengthen Dustproof (1 Gallon to make 5 Gallons) 3000 sq ft of Coverage


XTREME HARD CONCRETE DENSIFIER – 1 Gallon Concentrate makes 5 gallons

Will Cover 400 – 600 Square Feet per usable gallon (3000 sq ft)

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 the concrete until the surface is saturated, then agitate with a soft bristle broom. Wait until dry (45-60mins).

Xtreme Hard™ is a green, clean and safe material. Its low pH formula (pH approx 8.7, only slightly higher than baking soda) is safer for you to handle. Xtreme Hard emits no Volatile Organic Compounds (VOCs) 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 five gallons of ready-to-use product. Xtreme Hard is the lowest cost densifier per square foot. New Improved Nano Technology Formula, penetrates deeper into the concrete.

Coverage:  Will Cover 400 – 600 Square Feet per usable gallon (3000 sq ft) Just add water.


WHY XTREME HARD DENSIFIER? It is simply the best concrete densifier on the market. It penetrates far deeper than most densifiers on the market. Why does the matter? It matters because more of the concrete is getting a higher psi rating. That makes it work best for polishing for a more consistent shine.


Technical Data Sheet