---
product_id: 697643529
title: "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, Clear, Half-Quart"
brand: "flex paste"
price: "€ 34.03"
currency: EUR
in_stock: true
reviews_count: 8
category: "Flex Paste"
url: https://www.desertcart.it/products/697643529-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks
store_origin: IT
region: Italy
---

# Fully paintable & UV resistant Waterproof & dries underwater 8.75 fl oz high-viscosity paste 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, Clear, Half-Quart

**Brand:** flex paste
**Price:** € 34.03
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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, Clear, Half-Quart by flex paste
- **How much does it cost?** € 34.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/697643529-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks)

## 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.
- • **Paint It Your Way:** Once cured, it’s fully paintable to blend seamlessly with any surface or décor.
- • **Freshness Locked In:** Innovative stay-fresh container prevents waste by blocking air and preserving sealing power.
- • **Underwater Application:** Unique formula allows application and curing even underwater—perfect for emergency fixes.
- • **Versatile Surface Hero:** Ideal for walls, drywall, concrete, roofs, RVs, and more—your all-in-one repair solution.

## Overview

Flex Paste is a premium waterproof, paintable rubberized putty designed to fill large gaps, cracks, and holes. Its thick, flexible formula blocks air and water, cures underwater, and resists UV damage. Packaged in a stay-fresh container, it ensures no waste and long-lasting sealing power across multiple surfaces including drywall, concrete, roofs, and RVs.

## 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, Clear, Half-Quart: desertcart.com: Tools & Home Improvement

Review: Good stuff - This worked great! I am repurchasing due to some of it drying but that can be due to my son not closing it properly. It filled in some gaps and cracks at my front door perfectly so now I will paint it to see how that goes. You can't see where I put it at a casual glance so that's great.
Review: The product is outstanding to use, easy to use. I am sold on using it any where I need to. - I have door threshold that has been leaking for as long as I can remember allowing water into my garage. I replaced the threshold and found this product to be the easiest to apply. It will take more than can if you buy this size. The product is outstanding to use, easy to use. I am sold on using it any where I need to.

## 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 | B0DSK27GK9 |
| Best Sellers Rank | #3,770 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Hardware Sealers |
| Brand | Flex Paste |
| Color | Clear |
| Date First Available | January 8, 2025 |
| Item Form | Paste |
| Item Weight | 11.7 ounces |
| Item dimensions L x W x H | 4.25 x 4.25 x 2.5 inches |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Number of Items | 1 |
| Product Dimensions | 4.25 x 4.25 x 2.5 inches |
| Style | 8.75 fl oz Can, Clear |
| Surface Recommendation | Roofing & Shingles, Windows & Skylights, Tile & Grout, Decor, RV’s & Boats, Appliances & Plumbing Fixtures, Pools & Spas, Lighting Fixtures, Arts, Crafts and more. |
| UPC | 810129870305 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Paste
- **Item dimensions L x W x H:** 4.25 x 4.25 x 2.5 inches
- **Material:** Rubber
- **Style:** 8.75 fl oz Can, Clear
- **Water Resistance Level:** Waterproof

## Images

![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, Clear, Half-Quart - Image 1](https://m.media-amazon.com/images/I/411UMUBPZWL.jpg)
![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, Clear, Half-Quart - Image 2](https://m.media-amazon.com/images/I/41FNVSbvS1L.jpg)
![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, Clear, Half-Quart - Image 3](https://m.media-amazon.com/images/I/41XP8KlElxL.jpg)
![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, Clear, Half-Quart - Image 4](https://m.media-amazon.com/images/I/51XVGBJdoYL.jpg)
![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, Clear, Half-Quart - Image 5](https://m.media-amazon.com/images/I/51jWTHLWvLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff
*by T***A on December 31, 2025*

This worked great! I am repurchasing due to some of it drying but that can be due to my son not closing it properly. It filled in some gaps and cracks at my front door perfectly so now I will paint it to see how that goes. You can't see where I put it at a casual glance so that's great.

### ⭐⭐⭐⭐⭐ The product is outstanding to use, easy to use. I am sold on using it any where I need to.
*by K***N on December 19, 2025*

I have door threshold that has been leaking for as long as I can remember allowing water into my garage. I replaced the threshold and found this product to be the easiest to apply. It will take more than can if you buy this size. The product is outstanding to use, easy to use. I am sold on using it any where I need to.

### ⭐⭐⭐⭐ Nice and thick
*by J***Y on September 7, 2025*

Difficult area to caulk. This product is thick and allowed me to get it to stick using finger application. My only concern is that half the cans had a thin film on too on top where it started to dry. I chipped it off and used the rest of the can. This is also reason for buying several smaller cans so they would be used and I would not have opened can storage. Otherwise great product.

## 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, Clear, Half-Quart
- Flex Seal Liquid, 16 oz, Clear, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Seal, 14 oz, Clear, Stop Leaks Instantly, Transparent Waterproof Rubber Spray On Sealant Coating, Perfect for Gutters, Wood, RV, Campers, Roof Repair, Skylights, Windows, and More

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**Shop now:** [https://www.desertcart.it/products/697643529-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks](https://www.desertcart.it/products/697643529-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-23*