---
product_id: 697643529
title: "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: "€ 33.17"
currency: EUR
in_stock: true
reviews_count: 8
category: "Flex Paste"
url: https://www.desertcart.nl/products/697643529-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block
store_origin: NL
region: Netherlands
---

# Fully paintable & seamless finish Waterproof & dries underwater UV resistant & corrosion blocker 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:** € 33.17
**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, Clear, Half-Quart by flex paste
- **How much does it cost?** € 33.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/697643529-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

- • **Custom Color Match Ready:** Paint over once cured to blend flawlessly with any surface, preventing rust and UV damage.
- • **Super Thick, Super Strong:** Instantly fills large gaps, cracks, and holes with a durable, clingy paste that won’t sag or shrink.
- • **Apply Underwater, No Problem:** Unique formula cures even underwater, perfect for emergency fixes and tough environments.
- • **Seal Out Water & Air Like a Pro:** Creates a flexible, rubberized barrier that blocks moisture and air infiltration for lasting protection.
- • **Stay Fresh Container Technology:** Innovative airtight packaging locks in freshness and extends product life—no waste, no hassle.

## Overview

Flex Paste is a premium waterproof, paintable rubberized putty designed to fill and seal gaps, cracks, and holes on a variety of surfaces including walls, drywall, concrete, and RVs. Its innovative formula cures underwater, resists UV damage, and prevents rust and corrosion. Packaged in a stay-fresh container, it ensures long-lasting sealing power with zero waste, making it the go-to solution for professional-grade repairs and maintenance.

## 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 | #4,833 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #13 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

![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)
![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)
![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)
![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)
![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.nl/products/697643529-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block](https://www.desertcart.nl/products/697643529-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-29*