---
product_id: 234733057
title: "Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge"
brand: "flex paste"
price: "VT7012"
currency: VUV
in_stock: true
reviews_count: 11
category: "Flex Paste"
url: https://www.desertcart.vu/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block
store_origin: VU
region: Vanuatu
---

# Dries underwater Fully paintable finish Waterproof & airtight seal Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge

**Brand:** flex paste
**Price:** VT7012
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it, paint it, forget it — Flex Paste has your repairs covered!

## Quick Answers

- **What is this?** Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge by flex paste
- **How much does it cost?** VT7012 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block)

## Best For

- flex paste enthusiasts

## Why This Product

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

## Key Features

- • **Seal Like a Pro:** Creates a flexible, rubberized barrier that blocks air, water, and moisture for lasting protection.
- • **Instant Gap Filler:** Super thick formula clings and fills large cracks, holes, and gaps with ease—no mess, no stress.
- • **Custom Finish Ready:** Once cured, paint it any color to match your style while preventing rust, corrosion, and UV damage.
- • **Freshness Locked In:** Innovative Stay Fresh container prevents waste by locking out air to keep your paste ready for action.
- • **Versatile Surface Master:** Works seamlessly on walls, drywall, concrete, EPDM, roofs, RVs, and more—your all-in-one repair solution.

## Overview

Flex Paste is a premium waterproof, paintable putty designed to fill and seal gaps, cracks, and holes across multiple surfaces. Its unique rubberized formula creates a flexible, watertight barrier that even cures underwater. Packaged in an innovative Stay Fresh container, it ensures long-lasting sealing power with zero waste. Ideal for walls, roofs, RVs, and more, it’s UV resistant and fully paintable, making it the go-to solution for professional-grade repairs.

## Description

Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge - desertcart.com

Review: It really works! - This is an a-m-a-z-i-n-g product!!! I stumbled on a small can of it in a hardware store. It works so well, that I purchased a gallon. I am using it on the roof of my motor coach and a box trailer.
Review: Good stuff, simple to use - I was worried bjt, it worked I repaired a fiberglass bathtub, it was thick, I globed it on and to worked good, my can was air tight and fresh, not permanent but long lasting patch, don't get it on your clothes,,,

## Features

- NEW! STAY FRESH CONTAINER – Blocks out air and locks in freshness to extend the sealing power of Flex Paste, with no waste
- COAT, SEAL & PROTECT - Penetrates deep to seal out air, water, and moisture. Once dry, it turns into a strong, flexible, watertight, rubberized barrier
- WORKS UNDERWATER - Can be applied underwater, and it even dries underwater
- FILLS LARGE AREAS - Super thick rubber paste clings to the surface and instantly fills large gaps, cracks, and holes
- FULLY PAINTABLE - Once fully cured, it can be painted any color. Helps prevent rust and corrosion, and it is UV resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084TCZLQQ |
| Best Sellers Rank | #15,848 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #68 in Hardware Sealers |
| Brand Name | Flex Paste |
| Color | White |
| Compatible Material | Brick, Ceramic, Concrete, Fabric, Glass, Metal, Plastic, Porcelain, Stone, Wood |
| Customer Reviews | 4.0 4.0 out of 5 stars (6,017) |
| Included Components | Item |
| Item Dimensions | 11.25 x 3 x 3 inches |
| Item Form | Paste |
| Item Type Name | Flex Seal PFSWHTR10 Flex Paste 9 Oz. Cartridge - White |
| Item Weight | 9 Ounces |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | PFSWHTR10 |
| Number of Items | 1 |
| Part Number | PFSWHTR10 |
| Style Name | 9 oz White |
| Surface Recommendation | Windows,Doors |
| UPC | 850010226866 |
| Unit Count | 9.0 Ounce |
| Warranty Description | 1 Year Limited |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Paste
- **Item Weight:** 9 Ounces
- **Item dimensions L x W x H:** 11.25 x 3 x 3 inches
- **Material:** Rubber
- **Style:** 9 oz White

## Images

![Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge - Image 1](https://m.media-amazon.com/images/I/61nIVkJXywL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ It really works!
*by B***Y on February 20, 2026*

This is an a-m-a-z-i-n-g product!!! I stumbled on a small can of it in a hardware store. It works so well, that I purchased a gallon. I am using it on the roof of my motor coach and a box trailer.

### ⭐⭐⭐⭐⭐ Good stuff, simple to use
*by L***K on April 18, 2025*

I was worried bjt, it worked I repaired a fiberglass bathtub, it was thick, I globed it on and to worked good, my can was air tight and fresh, not permanent but long lasting patch, don't get it on your clothes,,,

### ⭐ Does NOT work as advertised!!!
*by C***S on October 28, 2024*

UPDATE - I have been monitoring the pipe for the last few days. While I initially thought the paste was going to provide the fix I needed, that "thought" would be incorrect. The water started leaking again. Be smart/save your money and do not buy this stuff. I'm going back to what I should have done to start with - turn off the water and replace the pipe. This Flex Paste is JUNK!!!! Had a very small leak at the base of this water faucet (small droplets of water on the PVC surface). Based on the advertisement I thought the paste would be the perfect fix. I followed the directions as stated on the container. After apply a good initial coat, I still had the small leak. The next day, I applied another coat - still had the leak. The next day, after turning off the water to everything, I applied another coat heavy/massive amount of paste using both a putty knife and my hand. Left the water off for 1 to 2 hours and the leak appears to have stopped (after using most of the paste). What a pain!!! While using the paste, I was diligent in keeping the lid on the paste. At the end of each day, I would use a rubber mallet to hammer the lid on. Regardless of the tight seal, the paste still hardened. Probably would have been easier to just replace the bad piece of PVC that was leaking.

## Frequently Bought Together

- Flex Paste, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs, White, Cartridge
- Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant, Strong, Paintable, Indoor, Outdoor, Bath, Shower, Sink, Window, Baseboards, Door, RV, Roof, Wood, Auto & Marine, Clear, 6.6 oz, 1-Pack

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**Shop now:** [https://www.desertcart.vu/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block](https://www.desertcart.vu/products/234733057-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-06*