---
product_id: 663435902
title: "Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection"
brand: "tapel"
price: "€ 68.85"
currency: EUR
in_stock: true
reviews_count: 13
category: "Tapel"
url: https://www.desertcart.fi/products/663435902-liquid-rubber-waterproof-sealant-3x-stronger-black-1l-professional-grade
store_origin: FI
region: Finland
---

# 90% cure in 2 hours Works from -40°F to 300°F 3X stronger waterproof membrane Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection

**Brand:** tapel
**Price:** € 68.85
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it once, forget leaks forever!

## Quick Answers

- **What is this?** Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection by tapel
- **How much does it cost?** € 68.85 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/663435902-liquid-rubber-waterproof-sealant-3x-stronger-black-1l-professional-grade)

## Best For

- tapel enthusiasts

## Why This Product

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

## Key Features

- • **DIY-Ready Instant Seal:** No mixing or tools needed—apply like paint and watch hairline cracks vanish automatically.
- • **Extreme Weather Warrior:** UV-resistant & salt spray tested for 1000+ hours, flexes through freeze-thaw cycles effortlessly.
- • **Fast, Durable Protection:** Walkable in 24 hours, remains pliable and crack-free for 5+ years—your long-term leak defense.
- • **Eco-Safe & High-Yield Formula:** Low-VOC, water-based, safe for ponds & greenhouses, covering 30% more area than asphalt alternatives.
- • **Impenetrable Multi-Surface Armor:** Seals roofs, concrete, metal, wood & PVC instantly with a flexible, weatherproof shield.

## Overview

Tapel Liquid Rubber Waterproof Sealant delivers professional-grade, 3X stronger waterproof protection for roofs, concrete, metal, and wood. Its fast-curing, self-leveling formula works in extreme temperatures (-40°F to 300°F) and resists UV, salt spray, and weather damage. Eco-friendly and easy to apply, it covers 2m² per liter and stays flexible for over 5 years, making it the ultimate DIY solution for lasting leak repair and crack filling.

## Description

Tapel Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection : desertcart.co.uk: DIY & Tools

Review: Excellent product. - Excellent. Worked perfectly to waterproof/sealant a wooden sump for water feature. Easy to apply.
Review: Easy to clean brushes etc - It applies as per info. Too early to tell if it's working hence the 4 stars. As it's water based it's easy to clean up brushes etc.

## Features

- ✔ 🔧 MULTI-SURFACE ARMOR PROTECTION: Tapel's Black liquid rubber forms an impenetrable waterproof membrane for roofs, concrete foundations, metal gutters, wooden sheds, PVC pipes, and more. Bonds instantly to stop active leaks while preventing future cracks – even in -40°F to 300°F extremes.
- ✔ ⚡ DIY-FRIENDLY INSTANT SEAL TECHNOLOGY: No mixing, no tools – apply like thick paint with brush/roller/pour method. Self-leveling formula fills hairline cracks (<1mm) automatically. 90% cure in 2hrs (50°F+), walkable surface in 24hrs.
- ✔ 360° WEATHER WARRIOR DEFENSE: UV-resistant elastomeric coating flexes with seasonal expansion/contraction. Passes 1000hr salt spray test, withstands torrential rains, ice dams, and pool chemical splashes.
- ✔ ✅ ECO-SAFE & HIGH-YIELD COVERAGE: Low-VOC water-based formula safe for fish ponds and greenhouse use. 1kg covers 2m² (1 coat) – 30% more efficient than asphalt-based products. Remains pliable for 5+ years without cracking.
- ✔ 🛠️ Application Tip: Extended periods of rain and cool weather can delay the curing process of waterproof adhesives. It's advisable to apply the waterproof glue during clear, sunny conditions and in an environment that remains relatively dry both before and after application. For optimal performance, the liquid rubber sealant should be applied in temperatures of 10˚C/50˚F or above, including the temperatures overnight.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D8B2SXT1 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 7,772 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Waterproofers |
| Colour | BLACK |
| Customer Reviews | 4.1 4.1 out of 5 stars (974) |
| Date First Available | 23 July 2024 |
| Included components | Tapel Liquid Rubber Waterproof Sealant |
| Item Weight | 1 kg |
| Item model number | BLACK |
| Manufacturer | tapel |
| Material | Polyurethane |
| Part number | Tapel Flüssiger Wasser Stopp |
| Product Dimensions | 9 x 9 x 9 cm; 1 kg |
| Size | 1L |
| Style | NEW FORMULA |

## Product Details

- **Brand:** Tapel
- **Item dimensions L x W x H:** 9 x 9 x 9 centimetres
- **Item weight:** 1000 Grams
- **Material:** Polyurethane
- **Style:** NEW FORMULA

## Images

![Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection - Image 1](https://m.media-amazon.com/images/I/41P4mw095jL.jpg)
![Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection - Image 2](https://m.media-amazon.com/images/I/511eo7PVTTL.jpg)
![Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection - Image 3](https://m.media-amazon.com/images/I/511u4CkK2PL.jpg)
![Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection - Image 4](https://m.media-amazon.com/images/I/51NHkkS4oZL.jpg)
![Liquid Rubber Waterproof Sealant - 3X Stronger- Black 1L - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection - Image 5](https://m.media-amazon.com/images/I/51Q1drdXS8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent product.
*by A***R on 27 December 2025*

Excellent. Worked perfectly to waterproof/sealant a wooden sump for water feature. Easy to apply.

### ⭐⭐⭐⭐ Easy to clean brushes etc
*by D***E on 19 August 2025*

It applies as per info. Too early to tell if it's working hence the 4 stars. As it's water based it's easy to clean up brushes etc.

### ⭐⭐⭐⭐⭐ Brilliant!
*by H***N on 10 November 2025*

Brilliant!

## Frequently Bought Together

- Tapel Liquid Rubber Waterproof Sealant - 3X Stronger - Black 35oz - Professional Grade Roof & Concrete Coating, Indoor/Outdoor Leak Repair, Crack Filler, Weather-Resistant Protection
- Pro Grade, Paint Brushes, 5-Piece, Paint Brush Set: Flat & Angle Brushes for Latex and Oil Paints, Stains, Interior & Exterior Home Improvement
- Edward Tools 7 Piece 4” Paint Roller Kit - Includes Acrylic, Polyester and Foam Covers - Deluxe Plastic Paint Tray - Ergo-Grip Frame with Rubber Handle

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**Shop now:** [https://www.desertcart.fi/products/663435902-liquid-rubber-waterproof-sealant-3x-stronger-black-1l-professional-grade](https://www.desertcart.fi/products/663435902-liquid-rubber-waterproof-sealant-3x-stronger-black-1l-professional-grade)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-27*