--- product_id: 421863452 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: "KD 13.28" currency: KWD in_stock: true reviews_count: 5 category: "Flex Paste" url: https://www.desertcart.com.kw/products/421863452-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block store_origin: KW region: Kuwait --- # Fully paintable & UV resistant Dries underwater, blocks moisture Waterproof & flexible sealant 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:** KD 13.28 **Availability:** ✅ In Stock ## Summary > 🛡️ Seal it, paint it, forget it — the last fix you’ll ever need! ## 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?** KD 13.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/421863452-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 - • **Stay Fresh Container:** Locks in freshness, no waste, longer sealing power - • **Underwater Application:** Apply and cure even underwater for ultimate versatility - • **Paintable & UV Resistant:** Customizable finish that prevents rust and withstands sun exposure - • **Super Thick Rubber Paste:** Instantly fills large gaps, cracks, and holes with strong adhesion - • **Multi-Surface Compatibility:** Perfect for walls, drywall, concrete, roofs, RVs, and more ## Overview Flex Paste is a premium waterproof, paintable rubberized putty designed to fill and seal gaps, cracks, and holes across multiple surfaces including drywall, concrete, and EPDM. Its innovative stay-fresh container preserves product integrity, while its unique formula cures underwater to form a flexible, UV-resistant barrier that blocks air, water, and moisture. Ideal for professional-grade repairs on walls, roofs, and RVs, Flex Paste combines durability with aesthetic versatility. ## 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 ![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) ![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) ![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) ![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) ![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.com.kw/products/421863452-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block](https://www.desertcart.com.kw/products/421863452-waterproof-paintable-putty-spackle-sealant-fill-gaps-cracks-holes-block) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-16*