---
product_id: 352099975
title: "Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon"
brand: "flex seal liquid"
price: "$650.11"
currency: USD
in_stock: true
reviews_count: 8
category: "Flex Seal Liquid"
url: https://www.desertcart.us/products/352099975-flex-seal-liquid-liquid-rubber-coating-sealant-waterproof-flexible-breathable
store_origin: US
region: United States of America
---

# 100% Waterproof & moisture-proof UV Resistant for long-lasting durability 2.5 Gallons for max coverage Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon

**Brand:** flex seal liquid
**Price:** $650.11
**Availability:** ✅ In Stock

## Summary

> 💧 Seal it, shield it, forget it — Flex Seal Liquid keeps your world watertight!

## Quick Answers

- **What is this?** Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon by flex seal liquid
- **How much does it cost?** $650.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/352099975-flex-seal-liquid-liquid-rubber-coating-sealant-waterproof-flexible-breathable)

## Best For

- flex seal liquid enthusiasts

## Why This Product

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

## Key Features

- • **DIY-Pro Ready:** Brush, roll, dip, or pour application means you control the process with professional-grade results every time.
- • **Watertight Flexibility:** Creates a flexible, breathable barrier that seals out water, air, and moisture to protect your investments.
- • **Rust & Corrosion Defense:** Chemical-resistant coating that stops rust in its tracks—ideal for marine, trailers, and outdoor gear.
- • **UV Shielded for Longevity:** UV resistant formula prevents cracking and fading, ensuring your repairs stay flawless season after season.
- • **Max Coverage, Minimal Effort:** 2.5 gallons of liquid rubber lets you seal large surfaces fast—perfect for roofs, basements, and more.

## Overview

Flex Seal Liquid MAX is a 2.5-gallon liquid rubber coating designed for professional-grade waterproofing and sealing. Its flexible, breathable, and UV-resistant formula protects roofs, basements, RVs, and more from water, air, and corrosion damage. Easy to apply with multiple methods, it delivers durable, long-lasting protection for both DIY enthusiasts and pros.

## Description

Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon: desertcart.com: Tools & Home Improvement

Review: Reliable and Durable Waterproof Sealant - Flex Seal Liquid MAX is a game-changer for sealing and waterproofing projects. The 2.5-gallon size provides great coverage, making it ideal for roofs, basements, RVs, and more. It applies smoothly, dries to a flexible and durable finish, and holds up well against water and UV exposure. Perfect for long-lasting repairs with a strong, watertight seal. A must-have for DIY and professional use!
Review: Used for my Wide Driveway Cracks - You’ve seen the commercials. I used this to fill the 3/4” to 1.5” cracks in my asphalt driveway. I’ve used the Black Flex Seal Liquid for as long as ten years to fill the cracks. I never had any fail. I live in a harsh winter area. It’s expensive and you have to come up with your own system as to how to apply. I transfer from the big container to a Pyrex 16oz measuring cup.

## Features

- Flex Seal Liquid is liquid rubber in a can! Now you can brush, roll, dip or pour it on!
- Use anywhere you need a watertight, flexible rubberized coating
- Goes on smooth and covers fast, sealing out water, air and moisture
- UV Resistant
- Prevents rust and corrosion. Chemical resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0916RKHLH |
| Best Sellers Rank | #258,923 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #620 in Hardware Sealers |
| Brand | Flex Seal Liquid |
| Color | Black |
| Date First Available | March 27, 2021 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00850017897434 |
| Item Form | Liquid |
| Item Weight | 20 pounds |
| Item dimensions L x W x H | 10.5 x 10 x 10 inches |
| Item model number | LFSMAXBLK02 |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Number of Items | 1 |
| Product Dimensions | 10.5 x 10 x 10 inches |
| Style | Liquid Rubber |
| Surface Recommendation | Roof |
| UPC | 850017897434 |
| Unit Count | 320.0 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 20 Pounds
- **Item dimensions L x W x H:** 10.5 x 10 x 10 inches
- **Material:** Rubber
- **Style:** Liquid Rubber

## Images

![Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon - Image 1](https://m.media-amazon.com/images/I/81FkXWgrqlL.jpg)
![Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon - Image 2](https://m.media-amazon.com/images/I/81oKdww8XFL.jpg)
![Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon - Image 3](https://m.media-amazon.com/images/I/91yaOspm6zL.jpg)
![Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon - Image 4](https://m.media-amazon.com/images/I/91oUOI09wrL.jpg)
![Flex Seal Liquid, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, Black, 2.5 Gallon - Image 5](https://m.media-amazon.com/images/I/911Yf+AjPtL.jpg)

## Available Options

This product comes in different **Pattern** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable and Durable Waterproof Sealant
*by A***L on March 8, 2025*

Flex Seal Liquid MAX is a game-changer for sealing and waterproofing projects. The 2.5-gallon size provides great coverage, making it ideal for roofs, basements, RVs, and more. It applies smoothly, dries to a flexible and durable finish, and holds up well against water and UV exposure. Perfect for long-lasting repairs with a strong, watertight seal. A must-have for DIY and professional use!

### ⭐⭐⭐⭐⭐ Used for my Wide Driveway Cracks
*by M***G on December 7, 2025*

You’ve seen the commercials. I used this to fill the 3/4” to 1.5” cracks in my asphalt driveway. I’ve used the Black Flex Seal Liquid for as long as ten years to fill the cracks. I never had any fail. I live in a harsh winter area. It’s expensive and you have to come up with your own system as to how to apply. I transfer from the big container to a Pyrex 16oz measuring cup.

### ⭐⭐⭐⭐⭐ Works like a charm!!
*by A***. on June 29, 2025*

I've had a leaky balcony issue for a long time that leaked through to my kitchen ceiling. I used a little can of flex seal for the bad spots and it worked so well that I bought the bigger container and did my entire balcony myself. Didn't leak through all of those bad rain storms we've had lately. This stuff is freaking amazing!!!!!

## Frequently Bought Together

- Flex Seal Liquid MAX, 2.5 Gallon, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows
- Flex Tape, MAX, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof and Pool Repairs, Black, 4 in x 25 ft, Pack of 1

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**Shop now:** [https://www.desertcart.us/products/352099975-flex-seal-liquid-liquid-rubber-coating-sealant-waterproof-flexible-breathable](https://www.desertcart.us/products/352099975-flex-seal-liquid-liquid-rubber-coating-sealant-waterproof-flexible-breathable)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-25*