---
product_id: 330580026
title: "Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, White, 2.5 Gallon"
brand: "flex seal liquid"
price: "¥127903"
currency: JPY
in_stock: true
reviews_count: 8
category: "Flex Seal Liquid"
url: https://www.desertcart.jp/products/330580026-liquid-rubber-coating-sealant-waterproof-flexible-breathable-and-uv-resistant
store_origin: JP
region: Japan
---

# UV resistant coating Waterproof sealant Flexible rubber formula Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, White, 2.5 Gallon

**Brand:** flex seal liquid
**Price:** ¥127903
**Availability:** ✅ In Stock

## Summary

> 💧 Seal it once, seal it right — Flex Seal Liquid keeps your world watertight!

## Quick Answers

- **What is this?** Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, White, 2.5 Gallon by flex seal liquid
- **How much does it cost?** ¥127903 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/330580026-liquid-rubber-coating-sealant-waterproof-flexible-breathable-and-uv-resistant)

## 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

- • **Fast & Easy Use:** Brush, roll, dip, or pour for quick, smooth coverage every time.
- • **UV Shield Technology:** Resists sun damage to keep surfaces pristine and durable.
- • **Flexible & Breathable:** Adapts to surface movement without cracking or peeling.
- • **Versatile Application:** Perfect for roofs, basements, RVs, marine, masonry, and more.
- • **Ultimate Waterproof Defense:** Seals out water, air, and moisture for leak-proof protection.

## Overview

Flex Seal Liquid is a premium liquid rubber coating that provides a flexible, breathable, and UV-resistant waterproof seal. Ideal for a wide range of surfaces including roofs, basements, RVs, and marine applications, this 2.5-gallon white sealant offers fast coverage and long-lasting protection against water, rust, and corrosion.

## Description

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

Review: Sturdy, resilient, reliable - Amazing product, I've been using so many other brand names for roof sealant, and this was the only product that allowed me to fully fix my roofs leak-free. It's been almost a year and it's still very study and waterproof. All type of weather here, storms, hurricanes, snow, heat from direct sunlight, etc, and this product still keeps the roof nice and clean.
Review: Flex seal - Worked great to seal my & my brothers roofs on our 23 ft trailers. Works amazing so far. I would recommend to anyone that needs to seal there rv roofs.

## 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 | B0916SLFH1 |
| Best Sellers Rank | #127,648 in Automotive ( See Top 100 in Automotive ) #116 in RV Sealants |
| Brand | Flex Seal Liquid |
| Brand Name | Flex Seal Liquid |
| Color | White |
| Compatible Material | Concrete |
| Customer Reviews | 4.6 out of 5 stars 131 Reviews |
| Global Trade Identification Number | 00850017897441 |
| Included Components | Item |
| Item Dimensions | 10.5 x 10 x 10 inches |
| Item Form | Liquid |
| Item Type Name | Flex Liquid MAX - White 2.5 Gallons |
| Item Weight | 28 Pounds |
| Item dimensions L x W x H | 10.5 x 10 x 10 inches |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Material Type | Rubber |
| Style | Liquid Rubber |
| Style Name | Liquid Rubber |
| Surface Recommendation | Roof |
| UPC | 850017897441 |
| Unit Count | 320.0 Fluid Ounces |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item Weight:** 28 Pounds
- **Item dimensions L x W x H:** 10.5 x 10 x 10 inches
- **Material:** Rubber
- **Style:** Liquid Rubber

## Images

![Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry, MAX, White, 2.5 Gallon - Image 1](https://m.media-amazon.com/images/I/81rgnPYSTgL.jpg)

## Questions & Answers

**Q: What is the difference between the MAX and the regular?**
A: The max is a slightly different white color. Different color than spray too. Which ever you choose stick with one or you will have multiple shades of white.

**Q: What's the best roller nap quarter inch or three eights to apply this with**
A: Product is super thick compared to regular paint. Shortest to no nap the best. Takes practice to get used to products viscosity. Try to apply thick and in one coat for best results. Product will self level as well and can also apply with trowel.

**Q: Will this work on a fiberglass swimming pool ?**
A: I'm not sure how long it will last because it is not reccomended for underfoot applications

**Q: Will this work to waterproof bottom of window sills?**
A: Yes. This will work well

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy, resilient, reliable
*by P***O on September 17, 2025*

Amazing product, I've been using so many other brand names for roof sealant, and this was the only product that allowed me to fully fix my roofs leak-free. It's been almost a year and it's still very study and waterproof. All type of weather here, storms, hurricanes, snow, heat from direct sunlight, etc, and this product still keeps the roof nice and clean.

### ⭐⭐⭐⭐⭐ Flex seal
*by A***R on February 9, 2026*

Worked great to seal my & my brothers roofs on our 23 ft trailers. Works amazing so far. I would recommend to anyone that needs to seal there rv roofs.

### ⭐⭐⭐⭐⭐ Ease of use, fantastic sealant, lived up to the hype 😊
*by B***A on November 3, 2025*

This is Fantastic…brightens the room, water sealant 👍, No more bugs 👏👏👏 . Pretty easy to use. Great purchases

## Frequently Bought Together

- Flex Seal Liquid MAX, 2.5 Gallon, White, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, White, 9 oz, 2-Pack
- Flex Seal Liquid, 1 Gallon, White, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry

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**Shop now:** [https://www.desertcart.jp/products/330580026-liquid-rubber-coating-sealant-waterproof-flexible-breathable-and-uv-resistant](https://www.desertcart.jp/products/330580026-liquid-rubber-coating-sealant-waterproof-flexible-breathable-and-uv-resistant)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-06*