---
product_id: 59865111
title: "Foundation Sealant - Basement Waterproof Sealer, Black, 1 Gal | Flexible Elastomeric Coating - Crack Filler, Leak Repair, Basement Waterproofing Solution, Indoor/Outdoor Use, DIY Protection"
brand: "liquid rubber"
price: "€ 237.56"
currency: EUR
in_stock: true
category: "Liquid Rubber"
url: https://www.desertcart.hr/products/59865111-foundation-sealant-basement-waterproof-sealer-black-1-gal-flexible-elastomeric
store_origin: HR
region: Croatia
---

# 50 sq ft/gallon indoor coverage 900% elongation for ultimate flexibility Waterproof membrane seals active leaks Foundation Sealant - Basement Waterproof Sealer, Black, 1 Gal | Flexible Elastomeric Coating - Crack Filler, Leak Repair, Basement Waterproofing Solution, Indoor/Outdoor Use, DIY Protection

**Brand:** liquid rubber
**Price:** € 237.56
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal it once, forget leaks forever!

## Quick Answers

- **What is this?** Foundation Sealant - Basement Waterproof Sealer, Black, 1 Gal | Flexible Elastomeric Coating - Crack Filler, Leak Repair, Basement Waterproofing Solution, Indoor/Outdoor Use, DIY Protection by liquid rubber
- **How much does it cost?** € 237.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/59865111-foundation-sealant-basement-waterproof-sealer-black-1-gal-flexible-elastomeric)

## 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

- • **All-Weather Versatility:** Maintains performance across temperature extremes for indoor & outdoor use
- • **Broad Surface Compatibility:** Adheres flawlessly to concrete, wood, masonry, and metal for diverse projects
- • **Eco-Friendly & Easy Application:** Zero VOC, water-based formula that applies smoothly with no mixing required
- • **Professional-Grade Waterproofing:** Creates a permanent, seamless barrier against moisture and water damage
- • **Unmatched Flexibility & Strength:** Stretches up to 9x its size to prevent cracks and leaks

## Overview

Liquid Rubber Basement and Foundation Repair Sealant is a professional-grade, flexible waterproof coating designed to create a permanent, seamless membrane that protects basements, foundations, and other surfaces from water damage. With 900% elongation, superior adhesion to multiple materials, and coverage of up to 50 sq ft per gallon indoors, it outperforms traditional sealants. Its zero VOC, water-based formula ensures safe indoor use and easy application, making it the go-to solution for lasting waterproofing and crack repair.

## Description

Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black, 1 Gallon - desertcart.com

## Features

- SUPERIOR FLEXIBLE SEALANT: Liquid Rubber's foundation sealer creates a permanent waterproof membrane for basement waterproofing, foundation leak repair, shower liners, and planter boxes. This professional-grade sealer delivers unmatched protection with 900% elongation, preventing leaks and water damage more effectively than traditional sealants
- COMPLETE BASEMENT WATERPROOFING SYSTEM: Surpassing basic concrete paint, concrete sealers, and standard waterproof agents, this waterproofing membrane is designed to seal and protect against active leaks and moisture, making it perfect for basement leak and foundation repair. Seamlessly compatible with self leveling concrete applications
- VERSATILE CONCRETE CRACK FILLER: The professional-grade rubber coating and rubber waterproofing technology maintains flexibility in all temperatures, preventing future cracks and damage. This liquid rubber waterproof sealant provides superior adhesion to concrete, masonry, wood, metal, and foundation surfaces, making it an ideal choice for your DIY projects
- MAXIMUM COVERAGE & PERFORMANCE: This high-build basement sealer goes on like waterproof paint - Interior basement surfaces: 50 sq ft/gallon (requires: 2-3 coats), Exterior concrete sealer outdoor surfaces: 20 sq ft/gallon (requires: 3-4 coats). Apply between 50°F-90°F. For complete protection, use the rubber sealant with Liquid Rubber Geo-Textile on joints and transitions
- IMPORTANT USAGE GUIDELINES: Product goes on BROWN but dries Black; The water-based foundation sealer formula contains zero VOCs for safe indoor application. No mixing required! Apply by brush, roller, or professional sprayer as part of your basement waterproofing system. Not suitable for walking surfaces due to tackiness when cured
- FOR A WATERTIGHT SYSTEM - Use rubber sealant with Liquid Rubber Geo-Textile on joints and transitions, fill small cracks with Liquid Rubber Sealant & Adhesive, and bridge joints, seams, vents, and protrusions where movement may occur. Scroll down for full application steps

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071X7VL68 |
| Best Sellers Rank | #10,441 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #39 in Hardware Sealers |
| Brand | Liquid Rubber |
| Brand Name | Liquid Rubber |
| Color | Black |
| Compatible Material | Cement, Concrete, Engineered Wood, Masonry, Wood |
| Customer Reviews | 4.6 out of 5 stars 3,364 Reviews |
| Included Components | 1 Gallon |
| Item Dimensions | 8 x 8 x 8 inches |
| Item Form | Liquid |
| Item Weight | 9 Pounds |
| Item dimensions L x W x H | 8 x 8 x 8 inches |
| Manufacturer | Liquid Rubber USA |
| Material | Liquid-Based Rubber Elastomeric membrane |
| Material Type | Liquid-Based Rubber Elastomeric membrane |
| Model | 13 |
| Number of Items | 1 |
| Part Number | 10602 |
| Style | Protective |
| Style Name | Protective |
| Supported Standards | ASTM C-920 |
| Surface Recommendation | Poured concrete, Concrete masonry units (CMUs), Insulated concrete forms (ICF), Pre-cast and permanent wood foundations (PWFs), Wood (with proper priming and preparation) |
| UPC | 628421106028 |
| Unit Count | 128 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Liquid Rubber
- **Item Weight:** 9 Pounds
- **Item dimensions L x W x H:** 8 x 8 x 8 inches
- **Material:** Liquid-Based Rubber Elastomeric membrane
- **Style:** Protective

## Images

![Foundation Sealant - Basement Waterproof Sealer, Black, 1 Gal | Flexible Elastomeric Coating - Crack Filler, Leak Repair, Basement Waterproofing Solution, Indoor/Outdoor Use, DIY Protection - Image 1](https://m.media-amazon.com/images/I/71Y0KORR55L.jpg)

## Available Options

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

## Questions & Answers

**Q: will this work on a pond?**
A: Yes, as a matter of fact I just redid my riverbed and the pond with concrete and then applied a couple of good coats of the liquid rubber using the last coat to adhere the rocks and it is beautiful and is holding the water perfectly'

**Q: What's the lowest temperature to apply this product ?**
A: I don't think the temp affects the function of this product as it does not have a " Do not allow to freeze " requirement. It doesn't really dry as it remains pliable like rubber. I would however heed the suppliers advice and try not to apply it below 5c/40f if possible.

**Q: Approximately how many square feet will one 5 gallon bucket cover?**
A: 100-125sq ft at a 60mil thickness. 
 Bought 5, 5gal buckets to do 580sq ft of foundation and had about 1/2 gallon left over at an average of 60mil thickness.

**Q: can i use in wood? i want to do wooden pots**
A: Yes, you can use the Liquid Rubber Foundation Sealant in wooden pots or planters.  Please see the Liquid Rubber USA site for more specific application info.

## Frequently Bought Together

- Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black, 1 Gallon
- Liquid Rubber Geo-Textile - Fix Leaks - Repair and Restore - Easy to Use, 4 Inch x 160 Foot Roll
- Liquid Rubber Caulk - Hybrid Adhesive and Protective Sealant, White, 1 Pack

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**Shop now:** [https://www.desertcart.hr/products/59865111-foundation-sealant-basement-waterproof-sealer-black-1-gal-flexible-elastomeric](https://www.desertcart.hr/products/59865111-foundation-sealant-basement-waterproof-sealer-black-1-gal-flexible-elastomeric)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-27*