--- product_id: 421863452 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, White, Cartridge" brand: "flex paste" price: "€ 63.01" currency: EUR in_stock: true reviews_count: 5 category: "Flex Paste" url: https://www.desertcart.be/products/421863452-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks store_origin: BE region: Belgium --- # Fully paintable & UV resistant Waterproof & dries underwater Super thick rubberized sealant 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 **Brand:** flex paste **Price:** € 63.01 **Availability:** ✅ In Stock ## Summary > 💪 Seal it, paint it, forget it—ultimate waterproof putty for flawless fixes! ## 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, White, Cartridge by flex paste - **How much does it cost?** € 63.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/421863452-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 - • **Custom Finish Ready:** Once cured, paint over it any color to match your style while preventing rust, corrosion, and UV damage. - • **Fill Big Gaps Instantly:** Super thick rubber paste clings and fills large cracks, holes, and gaps with zero sagging. - • **Seal & Protect Like a Pro:** Creates a flexible, watertight barrier that blocks air, water, and moisture for lasting durability. - • **Stay Fresh Container Technology:** Innovative airtight packaging locks in freshness and extends product life—no waste, no mess. - • **Underwater Application? No Problem!:** Unique formula allows application and curing even underwater—perfect for emergency fixes. ## Overview Flex Paste Waterproof Paintable Putty is a high-performance rubberized sealant designed to block air, water, and moisture. It features a stay-fresh container to prevent waste, can be applied and cured underwater, and fills large gaps with a thick, flexible paste. Once dry, it’s fully paintable and UV resistant, making it ideal for walls, drywall, concrete, roofs, and RV repairs. ## Description Product Description Review: Awesome + Caulking gun Review: Works Great and Lasts ## 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 | #43,518 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Spackling Paste | | Brand | Flex Paste | | Brand Name | Flex Paste | | Colour | White | | Compatible Material | Plastic | | Customer Reviews | 4.4 out of 5 stars 722 Reviews | | Item Dimensions | 28.6 x 7.6 x 7.6 Centimeters | | Item Form | Paste | | Item Weight | 9 Ounces | | Item dimensions L x W x H | 28.6 x 7.6 x 7.6 Centimeters | | Manufacturer | Swift Response, LLC | | Manufacturer Part Number | PFSWHTR10 | | Material | Rubber | | Material Type | Rubber | | Model | PFSWHTR10 | | Number of Items | 1 | | Style | 9 oz White | | Style Name | 9 oz White | | Surface Recommendation | Walls, Drywall, EPDM, Concrete, Roof, RV Repairs | | UPC | 850010226866 | | Unit Count | 266.16 Milliliters | | Water Resistance Level | Waterproof | ## Product Details - **Material:** Rubber - **Brand:** Flex Paste - **Style:** 9 oz White - **Item Weight:** 9 Ounces - **Item dimensions L x W x H:** 28.6 x 7.6 x 7.6 Centimeters ## 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, White, Cartridge - Image 1](https://m.media-amazon.com/images/I/61nIVkJXywL.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, White, Cartridge - Image 2](https://m.media-amazon.com/images/I/61QSP-7wB2L.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, White, Cartridge - Image 3](https://m.media-amazon.com/images/I/914tMpgmSuL.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, White, Cartridge - Image 4](https://m.media-amazon.com/images/I/9107B1PS2wL.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, White, Cartridge - Image 5](https://m.media-amazon.com/images/I/810+KPaaYuL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesome + Caulking gun *by B***L on 29 May 2025* ### ⭐⭐⭐⭐⭐ Works Great and Lasts *by D***E on 23 October 2025* ### ⭐⭐⭐⭐⭐ Really good! *by N***9 on 22 March 2025* ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/421863452-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks](https://www.desertcart.be/products/421863452-flex-paste-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-06-20*