---
product_id: 20744546
title: "Xtreme Hard Collidal Silica Concrete Densifier Hardener Concentrate (5 Gallons) Makes 25 Gallons 12,500 Sq ft coverage"
brand: "brand: xtreme polishing systems"
price: "4780.81 DT"
currency: TND
in_stock: false
url: https://www.desertcart.tn/products/20744546-xtreme-hard-collidal-silica-concrete-densifier-hardener-concentrate-5-gallons
store_origin: TN
region: Tunisia
---

# Xtreme Hard Collidal Silica Concrete Densifier Hardener Concentrate (5 Gallons) Makes 25 Gallons 12,500 Sq ft coverage

**Brand:** brand: xtreme polishing systems
**Price:** 4780.81 DT
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Xtreme Hard Collidal Silica Concrete Densifier Hardener Concentrate (5 Gallons) Makes 25 Gallons 12,500 Sq ft coverage by brand: xtreme polishing systems
- **How much does it cost?** 4780.81 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/20744546-xtreme-hard-collidal-silica-concrete-densifier-hardener-concentrate-5-gallons)

## Best For

- brand: xtreme polishing systems enthusiasts

## Why This Product

- Trusted brand: xtreme polishing systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Size:5 Gallon




























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   ***Contact us via  messaging system for MSDS/TDS Sheets on this product***

## Features

- 5 Gallons Concentrate = 12,500 Square Feet Coverage
- Colloidal-Silica Densifying Agent (Nano Technology)
- Shipped As Concentrate (Just Add Water)
- Low pH Formula (pH 8.7)
- Xtreme Hard is the lowest cost densifier per square foot

## Images

![Xtreme Hard Collidal Silica Concrete Densifier Hardener Concentrate (5 Gallons) Makes 25 Gallons 12,500 Sq ft coverage - Image 1](https://images-na.ssl-images-amazon.com/images/I/41u5XvYkKSL.jpg)
![Xtreme Hard Collidal Silica Concrete Densifier Hardener Concentrate (5 Gallons) Makes 25 Gallons 12,500 Sq ft coverage - Image 2](https://images-na.ssl-images-amazon.com/images/I/71Oc6OiPnZL.jpg)

## Available Options

This product comes in different **Size** options.

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**Shop now:** [https://www.desertcart.tn/products/20744546-xtreme-hard-collidal-silica-concrete-densifier-hardener-concentrate-5-gallons](https://www.desertcart.tn/products/20744546-xtreme-hard-collidal-silica-concrete-densifier-hardener-concentrate-5-gallons)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-24*