---
product_id: 18312921
title: "Crack & Joint Sealant"
brand: "chimneyrx"
price: "€ 130.21"
currency: EUR
in_stock: null
reviews_count: 8
url: https://www.desertcart.fr/products/18312921-crack-and-joint-sealant
store_origin: FR
region: France
---

# Durable waterproof barrier Seals cracks up to 1/8" Dries in 2 hours Crack & Joint Sealant

**Brand:** chimneyrx
**Price:** € 130.21
**Availability:** ❌ Out of Stock

## Summary

> 🧱 Seal the cracks, not your style — waterproof protection that works as hard as you do!

## Quick Answers

- **What is this?** Crack & Joint Sealant by chimneyrx
- **How much does it cost?** € 130.21 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/18312921-crack-and-joint-sealant)

## Best For

- chimneyrx enthusiasts

## Why This Product

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

## Key Features

- • **Weatherproof Armor 💧:** Elastomeric, waterproof sealant blocks water while allowing vapor escape to prevent future damage.
- • **Precision Crack Sealing 🧱:** Effectively repairs mortar cracks up to 1/8” for flawless masonry restoration.
- • **Maximized Coverage Efficiency 📏:** One pint treats 110 bricks or 25 sq. ft., delivering cost-effective, long-lasting repairs.
- • **Fast & Effortless Application ⏱️:** Brush-on formula dries quickly within 2 hours, perfect for busy professionals.
- • **Invisible Fix, Visible Confidence 👀:** Maintains original masonry look with only a subtle, fading gloss on dense surfaces.

## Overview

ChimneyRx Masonry Crack and Concrete Joint Filler is a brushable, elastomeric sealant designed to repair and waterproof cracks up to 1/8” in mortar joints, brick, block, and stone walls. It creates a durable, weather-resistant barrier that prevents water infiltration while allowing moisture vapor to escape, reducing future damage. The product dries quickly to a clear or milky finish that blends seamlessly without altering masonry appearance, covering up to 110 bricks or 25 sq. ft. per pint for efficient, cost-effective maintenance.

## Description

ChimneyRx Masonry Crack and Joint Sealant is a brushable elastomeric sealant designed to repair exterior cracks in mortar joints, brick walls, and concrete masonry units. It effectively seals cracks up to 1/8” wide, preventing water infiltration while allowing moisture vapors to escape. Depending on the crack size, the formula dries to a clear or milky white finish, ensuring long-lasting waterproof protection. Eliminate costly tuckpointing and surface grouting with a solution that provides durable repairs without significantly altering the appearance of masonry. While a slight gloss may appear on dense surfaces, it diminishes over time. For optimal results, pair with Masonry Chimney Water Repellent for enhanced protection. One pint covers mortar joints around 110 standard bricks or 25 sq. ft. of wall surface, making it a reliable choice for masonry maintenance.

Review: Fantastic product - Easy to apply and VERY effective
Review: Crack killer - Excellent sealer for ceiling mortar cracks.

## Features

- SEALS CRACKS & GAPS: ChimneyRx concrete crack filler repairs cracks up to 1/8” in mortar joints on chimneys, brick walls and between concrete masonry units while also sealing larger cracks and defects that water repellents alone can’t fix
- DURABLE WATERPROOF PROTECTION: Unlike traditional cement crack fillers, our elastomeric concrete joint sealant creates a long-lasting, weather-resistant barrier that blocks water while allowing moisture vapors to escape, helping prevent future cracks
- COST-EFFECTIVE REPAIR & WON'T ALTER MASONRY LOOK: Fix leaks without expensive tuckpointing or grouting; our brick mortar crack filler solution won’t noticeably change masonry appearance; a slight gloss may appear on dense surfaces but fades over time
- EASY APPLICATION & QUICK DRYING: Apply this concrete filler with a brush in 40-100°F temperatures; it dries in 2 hours to a clear, translucent, milky film, blending seamlessly for brick mortar repair
- EFFICIENT COVERAGE: One pint of this cement joint filler treats mortar joints around 110 standard bricks or 25 sq. ft. of wall surface, providing excellent coverage for masonry and concrete repair tasks

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006BKU5P8 |
| Best Sellers Rank | #743,974 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,444 in Wall Surface Repair Products |
| Brand | CHIMNEYRX |
| Color | clear |
| Date First Available | November 22, 2011 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 1.08 pounds |
| Item dimensions L x W x H | 8 x 8 x 8 inches |
| Item model number | B006BKU5P8 |
| Manufacturer | ChimneySaver |
| Material | Concrete |
| Number of Items | 1 |
| Product Dimensions | 8 x 8 x 8 inches |
| Style | Compact |
| Surface Recommendation | Wall |
| UPC | 709057700160 |
| Unit Count | 19.21 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** CHIMNEYRX
- **Item dimensions L x W x H:** 8 x 8 x 8 inches
- **Material:** Concrete
- **Style:** Compact
- **Water Resistance Level:** Waterproof

## Images

![Crack & Joint Sealant - Image 1](https://m.media-amazon.com/images/I/41L+OJeseyL.jpg)
![Crack & Joint Sealant - Image 2](https://m.media-amazon.com/images/I/51H8N4Us5cL.jpg)
![Crack & Joint Sealant - Image 3](https://m.media-amazon.com/images/I/51Vxf3bPumL.jpg)
![Crack & Joint Sealant - Image 4](https://m.media-amazon.com/images/I/61WmII034yL.jpg)
![Crack & Joint Sealant - Image 5](https://m.media-amazon.com/images/I/71qS7uB+RjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic product
*by D***2 on August 19, 2025*

Easy to apply and VERY effective

### ⭐⭐⭐⭐⭐ Crack killer
*by C***. on July 27, 2025*

Excellent sealer for ceiling mortar cracks.

### ⭐⭐⭐⭐⭐ Excellent product!
*by V***0 on October 4, 2025*

Excellent product! I patched a good sized corner chip which came off the concrete chimney cap. It's been ~3 years since the patch and coating, and it's still holding strong. Rare to find a product which works as promised, but I've got to give this stuff/company credit for it living up to the claim.

## Frequently Bought Together

- ChimneyRx 300016 Masonry Crack and Concrete Joint Filler – Elastomeric & Waterproof Mortar Repair Sealant for Chimneys, Joints of Brick, Block & Stone Walls – 1 Pint
- ChimneyRx 300014 Brushable Chimney Crown Repair – Elastomeric & Waterproof Coating for Crowns & Masonry - Fast-Setting & Long-Lasting Protection Crack & Leak Prevention - 1 Gallon
- ChimneyRx 300119 Masonry Chimney Water Repellent - Siloxane Based, Non-Film-Forming, Breathable, and Transparent Waterproof Coating for Brick Chimneys & Other Vertical Surfaces - 1 Gallon

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-17*