---
product_id: 253381155
title: "L R Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart"
brand: "liquid rubber"
price: "€ 118.75"
currency: EUR
in_stock: true
reviews_count: 5
category: "Liquid Rubber"
url: https://www.desertcart.fi/products/253381155-l-r-waterproof-sealant-multi-surface-leak-repair-indoor-outdoor
store_origin: FI
region: Finland
---

# Eco-friendly water-based Multi-surface protection 1000% membrane stretch L R Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart

**Brand:** liquid rubber
**Price:** € 118.75
**Availability:** ✅ In Stock

## Summary

> 💧 Seal it once, seal it right — waterproof confidence that lasts!

## Quick Answers

- **What is this?** L R Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart by liquid rubber
- **How much does it cost?** € 118.75 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/253381155-l-r-waterproof-sealant-multi-surface-leak-repair-indoor-outdoor)

## Best For

- liquid rubber enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Safe & Odorless:** Water-based formula with zero VOCs, safe for indoor/outdoor use
- • **Ultimate Leak Defense:** Seals flat, metal, wood, concrete & more with one powerful coat
- • **Stretch & Flex Mastery:** Over 1000% elongation ensures zero cracks or adhesion failure
- • **Precision Coverage Control:** 30 mil vertical & up to 80 mil ponding membrane thickness for bulletproof sealing
- • **Seamless System Integration:** Use with Liquid Rubber Seam Tape & Geo-Textile for pro-grade joint protection

## Overview

Liquid Rubber L R Waterproof Sealant is a versatile, water-based rubber coating designed for durable, flexible, and eco-friendly waterproofing across multiple surfaces including roofs, wood, metal, and concrete. It offers superior elongation (1000%+) to prevent cracks, cures within 24-48 hours, and provides professional-grade coverage with easy application indoors or outdoors.

## Description

Liquid Rubber Waterproof Sealant is an environmentally friendly coating that is easily brushed on and cures into a waterproof membrane. It can be used in many applications where you need to create a watertight seal. Flat Roofs, Metal Roofs, Sloped Roofs, Planter Boxes, Foundations, Sheds, Basements, Metal, Wood, Concrete and more. Use Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile to bridge seams, joints, vents, protrusions to create a long lasting repair or rejuvenation. Apply when temperature is above 10C/50F including overnight temperatures. Apply to a dry surface, free of dirt, loose flaky paint and coatings, oil, grease, coal tar or other contaminants including laitance and efflorescense. Typically cures within 24-48 hrs. Do not freeze. Store in a warm area. Do not apply in wet conditions or if rain is forcasted within 24 hrs. Not meant as a constant walking surface. Coverage - Vertical Surfaces - Apply a minimum final thickness of 1 gallon/30 sq ft (2.8 sq m). It should require around 3-4 heavy coats to achieve a 30 mil (0.76mm) (DFT) membrane. Flat/Ponding Surface - Apply a minimum final thickness of 1 gallon/15 sq ft (1.4 sq m). It should require around 4-5 heavy coats to achieve a 60-80 mil (1.5-2mm) (DFT) membrane. Apply next coat when dry to touch and nothing is wet underneath; tacky is okay. Generally 4-6 hrs between heavy coats. Amounts vary depending on surface roughness. Use all material up to achieve a long lasting membrane. Avoid hot, direct, intense sunlight during application. Remove Painters Tape while still wet. Membrane will turn brown in ponding situations due to surfactants. Will dissipate over time as the water cycles and cleans.Clean Up - Use soap and water or mineral oil to clean skin. - If you need to return anything, contact us to initiate a return. We ask the material be unopened, in new condition and you ship the product back to us within 90 days.

Review: Stopped the leaks
Review: Canadian made product that works well

## Features

- PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, metal, wood, concrete and more
- HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product
- COVERAGE - Vertical Surfaces - 1 gallon/30 sq ft (2.8 sq m). 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane. Flat/Ponding Surfaces - 1 gallon/15 sq ft (1.4 sq m). 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane
- ENVIRONMENTALLY FRIENDLY - Liquid Rubber Waterproof Sealant is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
- FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile where possible movement may occur

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EIU42QQ |
| Best Sellers Rank | #84,505 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #466 in Hardware Sealers |
| Brand | Liquid Rubber |
| Brand Name | Liquid Rubber |
| Color | black |
| Compatible Material | Wood |
| Customer Reviews | 4.3 out of 5 stars 666 Reviews |
| Included Components | 1 Quart |
| Item Dimensions | 11.4 x 11.4 x 14 centimeters |
| Item Form | Liquid |
| Item Weight | 907 g |
| Item dimensions L x W x H | 11.4 x 11.4 x 14 centimeters |
| Item weight | 907 g |
| Manufacturer | L R |
| Material | Rubber |
| Material Type | Rubber |
| Style | Protective |
| Style Name | Protective |
| Surface Recommendation | Floor |
| UPC | 628421826025 |
| Unit Count | 32 Milliliters |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Material:** Rubber
- **Brand:** Liquid Rubber
- **Style:** Protective
- **Item weight:** 2 Pounds
- **Item dimensions L x W x H:** 11.4 x 11.4 x 14 centimeters

## Images

![L R Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart - Image 1](https://m.media-amazon.com/images/I/71FBV+oOMqL.jpg)

## Questions & Answers

**Q: How long does new concrete need to cure before applying liquid rubber?  We are sealing our new concrete pond with this product = will not have fish in**
A: New concrete needs to cure as per the installation instructions.  Applying any of the Liquid Rubber products or most waterproofing products prior to a full cure may compromise the curing process of the concrete.

**Q: I have a black plastic pond i got from home depot. will it adhere to that material?**
A: Yes, put a few coats on. Let each coat dry well (24)hrs . You can spray on inside of pond. I used a undercoating product used for undercoating cars for the outside of pond. I put 3 coats on. I let each coat dry for 2 days before applying the next coat. All worked great my pond is like new and no leaks and all of my goldfish are fat and happy! Good luck! Take your time and cover every spot even sides. Make sure the pond is very clean before u start applications. I used a ruff kitchen pot scrubber to scrub clean.

**Q: Does this project leave much of an odor after it has set?**
A: Haven't smelled any odor. When putting it on there is a usual rubber smell like a basketball, but it doesn't seem to last very long. And it  smells just like putting rubber on, which wasn't bad. It works for me.

**Q: what color is it when it dries?**
A: The product is brown when it is wet and black when it dries.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Stopped the leaks
*by R***O on 2 November 2025*



### ⭐⭐⭐⭐⭐ Canadian made product that works well
*by D***O on 5 November 2025*



### ⭐⭐⭐⭐⭐ Purchased twice in three years. Works well and easy to apply.
*by K***E on 18 March 2020*



## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-15*