---
product_id: 266191880
title: "Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs"
brand: "flex paste"
price: "฿5624"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/266191880-flex-paste-6-lb-tub-white-waterproof-paintable-putty-spackle
store_origin: TH
region: Thailand
---

# 100% waterproof & air-blocking UV & mildew resistant 6 lb heavy-duty tub Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs

**Brand:** flex paste
**Price:** ฿5624
**Availability:** ✅ In Stock

## Summary

> 💪 Seal it, forget it — Flex Paste keeps leaks out and confidence in.

## Quick Answers

- **What is this?** Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs by flex paste
- **How much does it cost?** ฿5624 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/266191880-flex-paste-6-lb-tub-white-waterproof-paintable-putty-spackle)

## 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:** Stops leaks fast with a flexible, rubberized barrier that clings to multiple surfaces.
- • **Versatile Application:** Perfect for indoor/outdoor use on drywall, concrete, roofs, RVs, and more.
- • **Effortless Gap Filling:** Thick paste consistency fills cracks, holes, and gaps seamlessly for a smooth finish.
- • **Paintable & Customizable:** White base allows for easy painting to match any décor or repair site.
- • **Durability Meets Flexibility:** UV and mildew resistant formula ensures long-lasting protection without cracking.

## Overview

Flex Paste is a 6 lb tub of white, waterproof, paintable putty designed to seal gaps, cracks, and holes with a flexible, rubberized coating. It adheres to a wide range of surfaces including drywall, concrete, and EPDM, offering UV and mildew resistance for durable indoor and outdoor repairs. Ideal for professionals and DIYers aiming to block water and air infiltration quickly and effectively.

## Description

Liquid rubber in a can! It sprays out as a thick liquid, seeps into cracks and holes and dries to a watertight, flexible, rubberized coating. Coats, seals, protects and will Stop Leaks Fast!

Review: It Works! - My neighbor over waters and the extra water flooded under a wooden tool shed and the termites took advantage. He didn't want to stop the overwatering and didn't want to put plastic up against his block wall. We dug down two feet and painted our side of the wall. No water getting through at all. The new toolshed should hold up better.
Review: Flex seal paste unusable! - Hired a contractor for sudden camper roof leak. He strongly suggested flex seal paste. Ordered 2- 6lb buckets. Only able to use minimal center the rest was harder than a rock. Opened 2nd bucket, same consistency. Over $100, leak not repaired, product unusable. Unhappy customer

## Features

- Stop Leaks Fast
- Clings to a wide variety of surfaces
- UV and mildew resistant
- Perfect for all types of indoor and outdoor projects and repairs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084TDWKGH |
| Assembled Diameter | 1 Millimeters |
| Batteries Required? | No |
| Best Sellers Rank | #961,120 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,042 in Hardware Sealers |
| Brand | Flex Paste |
| Color | White |
| Customer Reviews | 3.4 3.4 out of 5 stars (103) |
| Cutting Diameter | 1 Millimeters |
| Date First Available | February 14, 2020 |
| Included Components | Household Item |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Weight | 6 pounds |
| Item model number | FLEX SEAL - PFSWHTR64 - WHITE 6LB |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Number of Items | 1 |
| Part Number | FLEX SEAL - PFSWHTR64 |
| Style | 6 lb White |
| Surface Recommendation | Tub |
| UPC | 850010226828 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Paste
- **Item Weight:** 6 Pounds
- **Item dimensions L x W x H:** 7 x 7 x 5.1 inches
- **Material:** Rubber
- **Style:** 6 lb White

## Images

![Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 1](https://m.media-amazon.com/images/I/61CoJ+bWxXL.jpg)
![Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 2](https://m.media-amazon.com/images/I/81w56bUSAEL.jpg)
![Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 3](https://m.media-amazon.com/images/I/71MqY0agcOL.jpg)
![Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 4](https://m.media-amazon.com/images/I/91Wt91pk2dL.jpg)
![Flex Paste, 6 lb Tub, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 5](https://m.media-amazon.com/images/I/81pco0em2eL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It Works!
*by D***H on September 9, 2024*

My neighbor over waters and the extra water flooded under a wooden tool shed and the termites took advantage. He didn't want to stop the overwatering and didn't want to put plastic up against his block wall. We dug down two feet and painted our side of the wall. No water getting through at all. The new toolshed should hold up better.

### ⭐ Flex seal paste unusable!
*by S***S on June 4, 2024*

Hired a contractor for sudden camper roof leak. He strongly suggested flex seal paste. Ordered 2- 6lb buckets. Only able to use minimal center the rest was harder than a rock. Opened 2nd bucket, same consistency. Over $100, leak not repaired, product unusable. Unhappy customer

### ⭐⭐⭐ Great if you need half
*by P***O on February 2, 2024*

This stuff is truly a great product. My problem was that two containers were 25-30% dried inside the container. I thought it was just the first one. You only have 15-30 minutes to work this material, so I hurriedly opened the second tub hoping for a full one. No such luck. Second on also dried inside. If the foil inside fit the container better from the factory it would fix the problem. Instead, there were wrinkles and air gaps to the material. Again, I know this to be a good product but these two tubs were dried about 1/3 of product.

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**Shop now:** [https://www.desertcart.co.th/products/266191880-flex-paste-6-lb-tub-white-waterproof-paintable-putty-spackle](https://www.desertcart.co.th/products/266191880-flex-paste-6-lb-tub-white-waterproof-paintable-putty-spackle)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-07*