--- product_id: 98617127 title: "4lb Boat Pour Foam Kit, 1/2 Gallon" brand: "true composites" price: "€ 144.57" currency: EUR in_stock: true reviews_count: 8 category: "True Composites" url: https://www.desertcart.hr/products/98617127-4lb-boat-pour-foam-kit-1-2-gallon store_origin: HR region: Croatia --- # 95%-98% closed-cell water resistance Fast 10-min foam set time 4-lb density for superior flotation 4lb Boat Pour Foam Kit, 1/2 Gallon **Brand:** true composites **Price:** € 144.57 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Float, Fix, and Flourish with Foam That Means Business! ## Quick Answers - **What is this?** 4lb Boat Pour Foam Kit, 1/2 Gallon by true composites - **How much does it cost?** € 144.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/98617127-4lb-boat-pour-foam-kit-1-2-gallon) ## Best For - true composites enthusiasts ## Why This Product - Trusted true composites brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Closed-cell structure resists water, solvents, oil, and gasoline, keeping your work intact for years. - β€’ **Float Like a Pro:** High-density 4-lb foam ensures unmatched buoyancy and durability for your marine projects. - β€’ **Mix & Pour in a Flash:** Simple 1:1 ratio with a rapid 20-second working windowβ€”perfect for busy pros who value efficiency. - β€’ **Soundproof & Insulate:** Dual-purpose foam blocks noise and insulates pipes, ideal for colder climates and quiet rides. - β€’ **Versatile Crafting Power:** Layerable, shapeable, and compatible with polyester, epoxy, or vinyl ester coatings for endless applications. ## Overview The True Composites 4lb Boat Pour Foam Kit is a high-strength, closed-cell urethane foam system designed for flotation, insulation, and soundproofing. With a 4-lb density and 95%-98% closed-cell structure, it resists water, solvents, and fuels. Easy to mix at a 1:1 ratio, it sets in 10 minutes and cures fully within hours. Perfect for marine, industrial, and creative applications, this versatile foam bonds well between layers and accepts various resin coatings without damage. ## Description True Composites 4lb Boat Pour Foam Kit, 1/2 Gallon | Closed-cell foam for flotation, insulation, filling & buoyancy.: desertcart.com: Industrial & Scientific Review: Great stuff - Great stuff, but watch out since the final volume is surprisingly large. Worked like a charm in place of concrete to stabilize an arbor in place for a grape vine. Review: As advertised - As advertised ## Features - βœ… High-Strength & Durable: This two-part liquid pour-foam component system produces foam when Parts A and B are mixed together. It does not contain any CFC blowing agents and has a closed-cell structure that resists water absorption for many years. Once cured, the urethane flotation foam stays intact against solvents, oil, gasoline, fresh or salt water, and features a 95%–98% closed-cell structure with a 4-lb density. - βœ… Easy to Mix & Apply: Just mix at a simple 1:1 ratio to ensure even distribution and the strongest foam possible. This fast-acting formula allows about twenty seconds for mixing and pouring, and the foam sets in place within 10 minutes. It’s fully cured and ready for use in just a few hours. - βœ… Excellent Insulation & Soundproofing: The high-density foam protects boat pipes in colder temperatures and blocks sound, making it ideal for filling dock floats or boat parts for soundproofing and insulation. - βœ… Various Applications: Ideal for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more. - βœ… Versatile & Adaptable: This 2-part liquid pour-foam system can be poured in multiple layers with excellent bonding between them. Once fully cured, the foam can be coated with polyester, epoxy, or vinyl ester resins without melting. Shaping is easy once cured. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07L545RDN | | Best Sellers Rank | #230,419 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #239 in Urethane Adhesives | | Brand | TRUE COMPOSITES | | Brand Name | TRUE COMPOSITES | | Color | Multicolor | | Customer Reviews | 4.5 out of 5 stars 43 Reviews | | Grade Rating | Industrial | | Item Form | Liquid | | Item Shape | Rectangular | | Manufacturer | TRUE COMPOSITES | | Material | Liquid Foam | | Model Number | 4LBFOAM2QK | | Number of Items | 2 | | Number of Packs | 2 | | Part Number | 4LBFOAM2QK | | Shape | Rectangular | | UPC | 850019564068 | | Unit Count | 2 Count | ## Product Details - **Brand:** TRUE COMPOSITES - **Color:** Multicolor - **Item Form:** Liquid - **Material:** Liquid Foam - **Shape:** Rectangular ## Images ![4lb Boat Pour Foam Kit, 1/2 Gallon - Image 1](https://m.media-amazon.com/images/I/71Nu4APPrGL.jpg) ![4lb Boat Pour Foam Kit, 1/2 Gallon - Image 2](https://m.media-amazon.com/images/I/81eedjSnrSL.jpg) ![4lb Boat Pour Foam Kit, 1/2 Gallon - Image 3](https://m.media-amazon.com/images/I/41Wr75p5o7L.jpg) ![4lb Boat Pour Foam Kit, 1/2 Gallon - Image 4](https://m.media-amazon.com/images/I/61nW-5mhvTL.jpg) ![4lb Boat Pour Foam Kit, 1/2 Gallon - Image 5](https://m.media-amazon.com/images/I/71nJDdF9y-S.jpg) ## Questions & Answers **Q: What color is the expanded product?** A: It is a light beige color. I am using it floatation and painted the exposed surface blue (just because I had blue spray paint and thought it might protect the surface, probably not needed though) **Q: What can you use to break this down? I have some spillover i want to remove. Acetone?** A: Yes, that's what I used and it worked fine. **Q: If mixing by weight is says β€œ100 parts 115parts”??? Is that 100 parts of the A and 115 parts of the B?** A: I do equal amounts **Q: As it expands, does it exert a lot of force on mold it is in?** A: By my experience it does not. But you will need couple of vents to release pressure and overflow. It does heat up and you can feel it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great stuff *by A***S on August 25, 2019* Great stuff, but watch out since the final volume is surprisingly large. Worked like a charm in place of concrete to stabilize an arbor in place for a grape vine. ### ⭐⭐⭐⭐⭐ As advertised *by B***R on January 26, 2026* As advertised ### ⭐⭐⭐⭐ It’s very good *by A***R on March 10, 2020* Works great ## Frequently Bought Together - TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-4 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-1/2 Gallon Kit - 4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/98617127-4lb-boat-pour-foam-kit-1-2-gallon](https://www.desertcart.hr/products/98617127-4lb-boat-pour-foam-kit-1-2-gallon) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-31*