--- product_id: 98617127 title: "Rigid Pour Foam Kit, 1/2 Gallon | 4 lb closed-cell foam for flotation, insulation, filling & buoyancy." brand: "true composites" price: "€ 82.99" currency: EUR in_stock: true category: "True Composites" url: https://www.desertcart.ie/products/98617127-rigid-pour-foam-kit-1-2-gallon-4-lb-closed store_origin: IE region: Ireland --- # 95-98% closed-cell water resistance Fast 10-min set time 4 lb density for max durability Rigid Pour Foam Kit, 1/2 Gallon | 4 lb closed-cell foam for flotation, insulation, filling & buoyancy. **Brand:** true composites **Price:** € 82.99 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your projects with foam that works as hard as you do! ## Quick Answers - **What is this?** Rigid Pour Foam Kit, 1/2 Gallon | 4 lb closed-cell foam for flotation, insulation, filling & buoyancy. by true composites - **How much does it cost?** € 82.99 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/98617127-rigid-pour-foam-kit-1-2-gallon-4-lb-closed) ## 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 - • **Mix & Pour in Seconds:** Simple 1:1 ratio with a 20-second working window means no downtime on your projects. - • **Multi-Layer Versatility:** Pour in layers with seamless bonding; cures ready for coatings like epoxy or polyester without damage. - • **Creative & Structural Freedom:** Ideal for sculpting, casting, buoyancy, and structural support—engineer your next masterpiece. - • **Unmatched Strength & Longevity:** 4 lb density foam resists water, solvents, and fuels for years of reliable flotation and insulation. - • **Superior Insulation & Soundproofing:** Blocks cold and noise effectively—perfect for boats, docks, and industrial applications. ## Overview TRUE COMPOSITES 1/2 Gallon Rigid Pour Foam Kit delivers a high-density (4 lb) closed-cell urethane foam that cures fast (within 10 minutes) and offers exceptional resistance to water, solvents, and fuels. Designed for flotation, insulation, soundproofing, and structural applications, this two-part system mixes easily at a 1:1 ratio and bonds seamlessly across multiple layers, making it the go-to solution for professionals demanding durability and versatility. ## Description TRUE COMPOSITES Liquid Urethane - 2-Part Closed Cell Rigid Pour Foam - 4 Lb Density - Fast-Acting Formula - Great for Boat Buoyancy, Flotation, Filling, Soundproofing, & Insulation- 1/2 Gallon Kit: desertcart.com: Industrial & Scientific ## Features - ✅ 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. - ✅ 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. - ✅ 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. - ✅ 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. - ✅ 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 | #145,208 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #185 in Urethane Adhesives | | Brand Name | TRUE COMPOSITES | | Color | Multicolor | | Customer Reviews | 4.5 4.5 out of 5 stars (42) | | Grade Rating | Industrial | | Item Form | Liquid | | Item Shape | Rectangular | | Manufacturer | TRUE COMPOSITES | | Material | Liquid Foam | | Model Number | 4LBFOAM2QK | | Number of Items | 2 | | Part Number | 4LBFOAM2QK | | UPC | 850019564068 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** TRUE COMPOSITES - **Color:** Multicolor - **Item Form:** Liquid - **Material:** Liquid Foam - **Shape:** Rectangular ## Images ![Rigid Pour Foam Kit, 1/2 Gallon | 4 lb closed-cell foam for flotation, insulation, filling & buoyancy. - Image 1](https://m.media-amazon.com/images/I/71Nu4APPrGL.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 “100 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. ## 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? - 🛒 **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.ie/products/98617127-rigid-pour-foam-kit-1-2-gallon-4-lb-closed](https://www.desertcart.ie/products/98617127-rigid-pour-foam-kit-1-2-gallon-4-lb-closed) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-07-03*