---
product_id: 42911130
title: "Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 (5 Gallon)"
brand: "stone technologies corp"
price: "€ 292.35"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.it/products/42911130-stone-technologies-corp-silicate-based-hardener-densifier-concrete-sealer-x
store_origin: IT
region: Italy
---

# Water-resistant, breathable finish Reduces radon gas infiltration Strengthens concrete by up to 30% Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 (5 Gallon)

**Brand:** stone technologies corp
**Price:** € 292.35
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal the deal with concrete that stands the test of time!

## Quick Answers

- **What is this?** Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 (5 Gallon) by stone technologies corp
- **How much does it cost?** € 292.35 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/42911130-stone-technologies-corp-silicate-based-hardener-densifier-concrete-sealer-x)

## Best For

- stone technologies corp enthusiasts

## Why This Product

- Trusted stone technologies corp brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Radon Defense:** Effectively reduces harmful radon gas penetration for safer environments
- • **Concrete Armor:** Transforms porous, aged concrete into a durable, dust-free surface
- • **Weather Warrior:** UV resistant and non-yellowing for long-lasting outdoor protection
- • **Lifetime Confidence:** Backed by a lifetime guarantee to protect your investment
- • **Efflorescence Eliminator:** Stops unsightly dusting and salt damage in its tracks

## Overview

Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 is a premium 5-gallon solution designed to strengthen and protect porous or aged concrete surfaces. It reduces radon gas infiltration, prevents dusting and efflorescence, and offers a natural, non-slip, UV-resistant finish. Ideal for outdoor concrete exposed to harsh weather, this breathable sealer ensures long-term durability backed by a lifetime guarantee.

## Description

Concrete Sealer X-2 (5 Gallon) has been specifically designed to seal very porous concrete or cinder blocks. This sealer is also recommended for poured concrete if the concrete is more than 10 years old or if signs of seepage or damage such as dusting and efflorescence are already evident. It is also recommended that this sealer is used on outdoor concrete surfaces which may be exposed to severe weather conditions. This sealer is not recommended for decorative, stamped or aggregate concrete.Concrete Sealer X-2 leaves a natural finish (no sheen) after application, it is UV resistant, non-yellowing, breathable and the surface will not be slippery.

Review: So far so good; time will tell - I purchased 15 gallons of the X-2 variety for my 5-year old driveway and sidewalks. Road salt picked up on Ohio roads had been dropped on the drive and already started pitting it where the car parks; thus I opted for X-2 over X-1. I applied the product with a 4-gal backpack sprayer ($30 at Harbor Freight) and was happy with that decision. I calculated approximately 267 ft^2 of coverage per gallon per application. This works out to about 135 ft^2 / gallon for the two recommended coats. It was cloudy and about 70°F most of the time I worked, which was ideal. The portion of the day it was sunny, the sealer evaporated so quickly that I had to put more on to get it to soak in; this took more product and took more time. I applied it at the end of September, and we're now in February. The sealed areas are a bit darker than the unsealed, but it is not unsightly (I ran out before I got to the patio). I credit the sprayer for being able to apply it more evenly than possible with a roller, though I can't say for sure. The sealed areas are obviously much more water repellent than the unsealed as well, so I rest easy that my concrete will see no more salt damage. But as the title says, time will tell! Update: 8/8/2017 After five years, the pitting we experienced before application has stopped. There has been no yellowing. Water does not bead up on the rough-textured driveway or sidewalks, so if that is your litmus test, keep looking. I'm satisfied though.

## Features

- Hardener and Densifier for concrete
- Reduces Radon gas
- Hardens and Strengthens Concrete
- Stops Dusting and Efflorescence
- Lifetime Guarantee

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008SZZ180 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #2,385,341 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,531 in Hardware Sealers |
| Brand | Stone Technologies Corp |
| Color | clear |
| Customer Reviews | 4.0 4.0 out of 5 stars (1) |
| Date First Available | July 23, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Manufacturer | Stone Technologies Corp |
| Material | Silicone |
| Part Number | 639713555424 |
| Style | Compact |
| Surface Recommendation | Stone |
| UPC | 639713555424 |
| Unit Count | 1280.0 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Stone Technologies Corp
- **Item Form:** Liquid
- **Material:** Silicone
- **Style:** Compact
- **Water Resistance Level:** Water Resistant

## Images

![Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 (5 Gallon) - Image 1](https://m.media-amazon.com/images/I/41KixMIpcyL.jpg)
![Stone Technologies Corp Silicate Based Hardener Densifier Concrete Sealer X-2 (5 Gallon) - Image 2](https://m.media-amazon.com/images/I/61WknNEu97L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ So far so good; time will tell
*by H***Z on February 4, 2013*

I purchased 15 gallons of the X-2 variety for my 5-year old driveway and sidewalks. Road salt picked up on Ohio roads had been dropped on the drive and already started pitting it where the car parks; thus I opted for X-2 over X-1. I applied the product with a 4-gal backpack sprayer ($30 at Harbor Freight) and was happy with that decision. I calculated approximately 267 ft^2 of coverage per gallon per application. This works out to about 135 ft^2 / gallon for the two recommended coats. It was cloudy and about 70°F most of the time I worked, which was ideal. The portion of the day it was sunny, the sealer evaporated so quickly that I had to put more on to get it to soak in; this took more product and took more time. I applied it at the end of September, and we're now in February. The sealed areas are a bit darker than the unsealed, but it is not unsightly (I ran out before I got to the patio). I credit the sprayer for being able to apply it more evenly than possible with a roller, though I can't say for sure. The sealed areas are obviously much more water repellent than the unsealed as well, so I rest easy that my concrete will see no more salt damage. But as the title says, time will tell! Update: 8/8/2017 After five years, the pitting we experienced before application has stopped. There has been no yellowing. Water does not bead up on the rough-textured driveway or sidewalks, so if that is your litmus test, keep looking. I'm satisfied though.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-21*