---
product_id: 2952415
title: "Heavy Duty Exterior Sealer, 1 Quart/32 Oz (946ML) Bottle"
brand: "stonetech"
price: "€ 91.83"
currency: EUR
in_stock: true
reviews_count: 9
category: "Stone Tech"
url: https://www.desertcart.fi/products/2952415-heavy-duty-exterior-sealer-1-quart-32-oz-946ml-bottle
store_origin: FI
region: Finland
---

# Water-repellent formula Weather-resistant for all seasons 5-10 years heavy-duty protection Heavy Duty Exterior Sealer, 1 Quart/32 Oz (946ML) Bottle

**Brand:** stonetech
**Price:** € 91.83
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal your stone’s future—because your home deserves the best defense!

## Quick Answers

- **What is this?** Heavy Duty Exterior Sealer, 1 Quart/32 Oz (946ML) Bottle by stonetech
- **How much does it cost?** € 91.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/2952415-heavy-duty-exterior-sealer-1-quart-32-oz-946ml-bottle)

## Best For

- stonetech enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Shield:** Enjoy 5-10 years of durable protection against stains and weather damage.
- • **Effortless Application:** Applies smoothly with rollers, brushes, or sprayers—wipe off excess for a flawless finish.
- • **Ultimate Water Defense:** Repels water and minimizes efflorescence to keep your stone pristine.
- • **Versatile Surface Guard:** Perfect for natural stone, masonry, and grout on exterior surfaces.
- • **Professional-Grade Formula:** Solvent-based for deep penetration and superior weather resistance.

## Overview

STONETECH Heavy Duty Exterior Sealer is a solvent-based, penetrating sealer designed for exterior natural stone, masonry, and grout. It offers advanced water repellency, minimizes efflorescence, and provides weather resistance with a durable finish lasting 5-10 years. Ideal for professionals and homeowners seeking long-term protection and a natural look, this sealer applies easily and ensures your surfaces stay stunning through all seasons.

## Description

Product description STONETECHh Heavy Duty Exterior Sealer is a solvent based, penetrating sealer which offers advanced stain protection and weather resistance on natural stone, masonry and grout surfaces. Designed specifically to meet the challenges of exterior applications, STONETECH Heavy Duty Exterior Sealer minimizes efflorescence and repels water. desertcart.com StoneTech Heavy Duty Exterior Sealer is a solvent based, natural look sealer which offers heavy duty protection, water repellency and weather resistance to natural stone and masonry surfaces. Always test in a small inconspicuous area with a 24-hour cure time to determine ease of application and desired results. Allow new grout installations to cure for a minimum of 72 hours prior to application. Make sure surface is clean, thoroughly dry and free of waxes and coatings. Surface temperature should be between 50??F and 80??F. Mask off and protect any baseboards or adjacent areas to avoid splashing and overspray onto surfaces not intended to be treated. Liberally apply an even coat with a paint pad, paintbrush, paint roller or solvent-resistant, low-pressure sprayer. Allow to penetrate the surface for 5-15 minutes; denser material may require more time for sealer to penetrate. During this time, distribute excess over entire area to insure even penetration. Thoroughly wipe the entire surface with a clean dry cloth to completely remove all excess sealer from the surface. DO NOT ALLOW SEALER TO DRY ON THE SURFACE. A second coat may be needed for porous, absorbent surfaces and should be applied one hour after initial application as directed in steps 2-3. If sealer was not completely wiped off and a residue appears, wipe entire surfae with a towel dampened with sealer. Use a white nylon pad to loosen residue and follow with a clean, white absorbent towel to remove. Do not walk on surface for at least 4-6 hours. Full cure is achieved in 24-72 hours. Clean equipment with mineral spirits. Size and Coverage Quart: 50-250 sq. ft. Expected Wear: 5-10 years Stonetech. Includes: 1 1-Quart (.946L) StoneTech Heavy Duty Exterior Sealer

Review: The Very Best Sealer for Natural Stone & Slate Tiles BUT! - (READ NOTE about product's retirement at review's end.) -- My front porch is covered with natural slate tiles that require a sealer. After installation of the slate tiles about 12 years ago, I used StoneTech's stone & tile cleaner followed by their Heavy Duty Sealer. Both products worked like a dream. The cleaner did a great job of preparing the tiles for the sealer. The sealer applied easily (two coats) with a foam roller (followed by wiping off the excess with a cloth): it absorbed completely and deeply into the tiles. Afterwards, the color of the slate tiles was magnificent. The sealer is durable, lasting about 4 to 5 years without needing a 'maintenance' recoat. This Fall (2025), I bought more stone cleaner and the sealer for another maintenance coat. I am very happy with the result again. NOTICE: The Stonetech Heavy Duty Exterior Sealer is SOLVENT-based, which makes it very durable. Unfortunately, Stonetech discontinued its solvent-based sealer and replaced it with a WATER-based sealer. No water-based sealer holds up as well in exterior applications. Once the current stock of solvent-based sealer is sold out, the Heavy Duty Sealer is gone forever. I bought a gallon to store away for the next maintenance coat.
Review: Good quality - Used this on slate topped fire pit Sealed well, sheen held up over the summer elements Will see it weathers the winter. Most likely would buy again

## Features

- Advanced protection against water-based stains
- Protects natural stone, masonry and grout
- Minimizes efflorescence and repels water
- Provides weather resistance
- Solvent-based formula
- For exterior use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00065W8GS |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #234,558 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #535 in Hardware Sealers |
| Brand | StoneTech |
| Color | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (97) |
| Date First Available | September 29, 2004 |
| Global Trade Identification Number | 00669009106030 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Weight | 1.74 pounds |
| Item model number | WBS12-32 |
| Manufacturer | Granite City Tool |
| Material | Stone |
| Number of Items | 1 |
| Package Dimensions | 7.76 x 4.53 x 2.56 inches |
| Part Number | D15233316 |
| Style | Protection |
| Surface Recommendation | Tile |
| UPC | 669009106030 |
| Unit Count | 1.00 Pack |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** StoneTech
- **Item Form:** Liquid
- **Material:** Stone
- **Style:** Protection
- **Water Resistance Level:** Water Resistant

## Images

![Heavy Duty Exterior Sealer, 1 Quart/32 Oz (946ML) Bottle - Image 1](https://m.media-amazon.com/images/I/71aCzpn+0hL.jpg)

## Questions & Answers

**Q: Will this product make my limestone front steps slippery ?**
A: I too, was concerned when I applied Stonetech to my slate front porch and steps, but I have been using it there for 8 years and it has never made the steps slippery.

**Q: How is stone tech sealer applied?**
A: I applied it with a paint brush. I imagine you can use a roller or rag, depending on the roughness of the stone and how big it is.

**Q: What is the finish when dry? High gloss, semi-gloss, satin?**
A: Semi gloss but it seals the stone

**Q: Could i use this to reattach a pillow grave stone to its base?**
A: No this sealer just protects your stone.We are Surface Busters Hard Surface Cleaning And Restoration.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Very Best Sealer for Natural Stone & Slate Tiles BUT!
*by P***L on October 10, 2025*

(READ NOTE about product's retirement at review's end.) -- My front porch is covered with natural slate tiles that require a sealer. After installation of the slate tiles about 12 years ago, I used StoneTech's stone & tile cleaner followed by their Heavy Duty Sealer. Both products worked like a dream. The cleaner did a great job of preparing the tiles for the sealer. The sealer applied easily (two coats) with a foam roller (followed by wiping off the excess with a cloth): it absorbed completely and deeply into the tiles. Afterwards, the color of the slate tiles was magnificent. The sealer is durable, lasting about 4 to 5 years without needing a 'maintenance' recoat. This Fall (2025), I bought more stone cleaner and the sealer for another maintenance coat. I am very happy with the result again. NOTICE: The Stonetech Heavy Duty Exterior Sealer is SOLVENT-based, which makes it very durable. Unfortunately, Stonetech discontinued its solvent-based sealer and replaced it with a WATER-based sealer. No water-based sealer holds up as well in exterior applications. Once the current stock of solvent-based sealer is sold out, the Heavy Duty Sealer is gone forever. I bought a gallon to store away for the next maintenance coat.

### ⭐⭐⭐⭐⭐ Good quality
*by A***R on December 16, 2024*

Used this on slate topped fire pit Sealed well, sheen held up over the summer elements Will see it weathers the winter. Most likely would buy again

### ⭐⭐⭐⭐ Seems good so far
*by W***R on October 29, 2015*

Used this around my pool area. The water is beading up on the flagstone for now. I will see how it holds up over the winter months! Seems good so far!

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-23*