---
product_id: 2594748
title: "Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More"
brand: "flex seal"
price: "£42.67"
currency: GBP
in_stock: true
reviews_count: 13
category: "Flex Seal"
url: https://www.desertcart.co.uk/products/2594748-flex-seal-14-oz-2-pack-black-stop-leaks-instantly
store_origin: GB
region: United Kingdom
---

# Waterproof, stops leaks instantly Heat & cold resistant, no cracking 14 oz x 2 cans for extended use Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

**Brand:** flex seal
**Price:** £42.67
**Availability:** ✅ In Stock

## Summary

> 💧 Seal leaks fast, live worry-free!

## Quick Answers

- **What is this?** Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More by flex seal
- **How much does it cost?** £42.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/2594748-flex-seal-14-oz-2-pack-black-stop-leaks-instantly)

## Best For

- flex seal enthusiasts

## Why This Product

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

## Key Features

- • **Seal & Protect in a Snap:** Spray-on rubberized coating that stops leaks instantly and dries watertight.
- • **Built to Last Through Seasons:** Flexible formula resists cracking in winter and sagging in summer heat.
- • **DIY Essential for Every Manager:** Keep a 2-pack handy for quick, professional-grade repairs that save time and money.
- • **Versatile Surface Compatibility:** Works seamlessly on gutters, wood, metal, RVs, skylights, and more.
- • **Invisible Fix, Visible Confidence:** Dries black but can be painted over to blend perfectly with any surface.

## Overview

Flex Seal 14 oz 2-Pack is a professional-grade waterproof rubber spray sealant designed to instantly stop leaks and protect surfaces. Its flexible, durable coating withstands extreme temperatures without cracking or peeling, making it ideal for gutters, roofs, RVs, wood, and more. Easy to apply and paintable once dry, it’s the ultimate go-to for quick, reliable repairs that keep your home and gear leak-free year-round.

## Description

Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Thread Sealants - desertcart.com

Review: GOT WATER LEAKS, FLEX SEAL STOPS THE LEAKS !!!!! - I used the Flex Seal on my 21 year old GMC pickup truck where when it rained it would leak the rain water at the driver side of the windshield. I tried taping around the rubber or plastic seal that the glass is set in, but still leaks. Then I saw a Flex Seal commercial on tv and the video up first was sealing a windshield with the "clear" type of Flex seal. After taping all around the windshield with blue painters tape, as you don't want any spray getting on the painted part, I put 3 coats of the "clear" Flex Seal above and below the windshield's rubber seal. Wait about 4 to 6 hours between applying the coats of the Flex Seal. I tested the seal this morning with my water hose...... NO LEAKS ANY WHERE !!!! THIS STUFF WORKS !!!!!! Thank you desertcart FLEX SEAL IS A WINNER !!!!!!
Review: Definetly keeping a can in the camper now - I purchased this 14 oz can of white Flex Seal to repair some cracks on my popup camper’s roof after I accidentally backed into a tree. I was worried about the damage, but this product ended up being the perfect solution for the situation. It went on very easily, and I’ve been impressed with how well it holds up; after 34 days, there are absolutely no signs of peeling or poor adhesion. Most importantly, I haven't seen a single leak from the repaired spot since I applied it. It’s also incredibly discreet, as I can hardly even see where the damage was anymore. It worked perfectly to hide and fix my mistake, and I’m very satisfied with how it turned out.

## Features

- The easy way to coat, seal, protect, and stop leaks fast! Once dry, can be painted any color
- Seeps into cracks and holes. Dries to a watertight, flexible, rubberized coating. Stays flexible and pliable; lasts many years
- Transform and protect virtually everything! Ideal for arts & crafts, projects & hobbies
- Protects surface from corrosion, can be used on wet or dry surfaces
- Will not sag or drip in the Summer heat. Will not crack or peel in the Winter cold

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005SGM0YK |
| Best Sellers Rank | #148 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Hardware Sealers |
| Brand | Flex Seal |
| Brand Name | Flex Seal |
| Color | Black |
| Compatible Material | Asphalt, Metal, Polyvinyl Chloride, Rubber |
| Customer Reviews | 4.4 out of 5 stars 39,646 Reviews |
| Global Trade Identification Number | 00810129871357 |
| Included Components | Flex Seal Spray Rubber Sealant Coating, 14-oz, Black (2 Pack) |
| Item Dimensions | 9.5 x 2.5 x 2.5 inches |
| Item Form | Spray |
| Item Weight | 1.8 pounds |
| Item dimensions L x W x H | 9.5 x 2.5 x 2.5 inches |
| Manufacturer | Swift Response, LLC |
| Material | Liquid |
| Material Type | Liquid |
| Model | FSR20-2 |
| Number of Items | 2 |
| Number of Packs | 2 |
| Part Number | FSR20-2 |
| Style | Black, 14 oz, 2-Pack |
| Style Name | Black, 14 oz, 2-Pack |
| Surface Recommendation | Roof,Windows,Wood |
| UPC | 810129871357 |
| Unit Count | 14 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Material:** Rubber
- **Brand:** Flex Seal
- **Style:** Black, 14 oz, 2-Pack
- **Item Weight:** 28 Ounces
- **Item dimensions L x W x H:** 9.5 x 2.5 x 2.5 inches

## Images

![Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 1](https://m.media-amazon.com/images/I/810qtACQtnL.jpg)
![Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 2](https://m.media-amazon.com/images/I/815mAr3WvbL.jpg)
![Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 3](https://m.media-amazon.com/images/I/81IkkFpcbXL.jpg)
![Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 4](https://m.media-amazon.com/images/I/81l32VxIfrL.jpg)
![Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More - Image 5](https://m.media-amazon.com/images/I/71rHDTCIKtL.jpg)

## Available Options

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

## Questions & Answers

**Q: I have a wooden bucket ice cream maker that won't swell anymore and the water leaks out of it. Will this work with the salt brine?**
A: I am not sure if this would work. I would try gorilla glue.

**Q: Can this effectively seal a leaky window?**
A: Yes many people have had great success fixing a leaky window with Flex Seal.  You can use painters tape to section off the area you want to apply it to.  You may also want to try Flex Shot, which is a rubber caulking material, and will give you pinpoint accuracy.

**Q: Will it seal the bottom of a blow up matress**
A: Thank you for reaching out! We do not recommend Flex Seal Spray for this application, it is not meant for high pressure or temperature situations. 
Lucas - Customer Care at Flex Seal Products (Swift Response - The makers of Flex Seal)

**Q: would this be good for a bed truck liner?**
A: Not sure, it would take an awful lot to spray a bed of a truck and we found it to be sticky when it got hot!  We used it on a gutter so it didn't matter.

## Customer Reviews

### ⭐⭐⭐⭐⭐ GOT WATER LEAKS, FLEX SEAL STOPS THE LEAKS !!!!!
*by H***Y on July 29, 2026*

I used the Flex Seal on my 21 year old GMC pickup truck where when it rained it would leak the rain water at the driver side of the windshield. I tried taping around the rubber or plastic seal that the glass is set in, but still leaks. Then I saw a Flex Seal commercial on tv and the video up first was sealing a windshield with the "clear" type of Flex seal. After taping all around the windshield with blue painters tape, as you don't want any spray getting on the painted part, I put 3 coats of the "clear" Flex Seal above and below the windshield's rubber seal. Wait about 4 to 6 hours between applying the coats of the Flex Seal. I tested the seal this morning with my water hose...... NO LEAKS ANY WHERE !!!! THIS STUFF WORKS !!!!!! Thank you AMAZON FLEX SEAL IS A WINNER !!!!!!

### ⭐⭐⭐⭐⭐ Definetly keeping a can in the camper now
*by D***Y on July 6, 2026*

I purchased this 14 oz can of white Flex Seal to repair some cracks on my popup camper’s roof after I accidentally backed into a tree. I was worried about the damage, but this product ended up being the perfect solution for the situation. It went on very easily, and I’ve been impressed with how well it holds up; after 34 days, there are absolutely no signs of peeling or poor adhesion. Most importantly, I haven't seen a single leak from the repaired spot since I applied it. It’s also incredibly discreet, as I can hardly even see where the damage was anymore. It worked perfectly to hide and fix my mistake, and I’m very satisfied with how it turned out.

### ⭐⭐⭐⭐ For the right job, it's the tool
*by R***K on April 29, 2026*

Left no room for doubt that this is liquefied rubber in an aerosol. Be careful to get the Right Tool for the job. Check their "store" on Amazon- interesting discoveries there. For waterproofing / moisture barrier I would consider this again if a thin layer is adequate. May need to develop some application "technique" in some instances. My unusual situation involved some gaps that were worse than I anticipated. It's thin. Layering onto partially dry base layers to bulk it up did work but it's tricky until you find the way. I should have had silicone caulk on hand too but this seals hairline gaps nicely. With clear version, it's hard to see what's happening & to avoid waste or a running mess. Clogging is not a problem you'll likely have. As you might expect, liquid rubber involves intense solvents. You cannot over ventilate when using this. Plan ahead if using indoors.

## Frequently Bought Together

- Flex Seal, 14 oz, 2-Pack, Black, Stop Leaks Instantly, Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More
- Flex Tape, 4 in x 5 ft, Gray, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor Projects - Home RV Roof Plumbing and Pool Repairs
- Flex Seal Liquid, 16 oz, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-08-24*