--- product_id: 13105063 title: "Polyurethane Expanding Liquid Foam 1/2 Gallon KIT, 4 LB Density Polyurethane Foam, Includes 1 Quart of A & 1 Quart Part B, 2 Part Polyurethane Marine Foam" brand: "fgci" price: "379 zł" currency: PLN in_stock: true reviews_count: 8 category: "Fgci" url: https://www.desertcart.pl/products/13105063-polyurethane-expanding-liquid-foam-1-2-gallon-kit-4-lb store_origin: PL region: Poland --- # 4 LB Density Marine-Grade Foam Water-Resistant Closed Cell Structure 2-Part Mix for Perfect Chemical Bond Polyurethane Expanding Liquid Foam 1/2 Gallon KIT, 4 LB Density Polyurethane Foam, Includes 1 Quart of A & 1 Quart Part B, 2 Part Polyurethane Marine Foam **Brand:** fgci **Price:** 379 zł **Availability:** ✅ In Stock ## Summary > ⚓ Float Above the Rest with Pro-Grade Expanding Foam! ## Quick Answers - **What is this?** Polyurethane Expanding Liquid Foam 1/2 Gallon KIT, 4 LB Density Polyurethane Foam, Includes 1 Quart of A & 1 Quart Part B, 2 Part Polyurethane Marine Foam by fgci - **How much does it cost?** 379 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/13105063-polyurethane-expanding-liquid-foam-1-2-gallon-kit-4-lb) ## Best For - fgci enthusiasts ## Why This Product - Trusted fgci brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compatible with Resins:** Easily laminate with polyester, epoxy, or vinyl ester for professional-grade finishes. - • **Precision 2-Part Formula:** Exact A & B mix ensures flawless expansion and structural integrity every time. - • **Superior Water Resistance:** Closed cell foam repels water, perfect for insulation and flotation applications. - • **Versatile Multi-Layer Pouring:** Layer foam seamlessly for custom thickness with unbeatable bonding strength. - • **Coast Guard Certifiable Flotation:** Trusted marine-grade foam that keeps your vessel buoyant and safe. ## Overview This 1/2 gallon polyurethane expanding foam kit delivers 4 lb density closed-cell foam ideal for marine and structural uses. Featuring a precise 2-part chemical mix, it expands to 1 cubic foot of water-resistant, Coast Guard certifiable flotation foam. Perfect for boat repairs, insulation, and custom projects, it bonds well with common resins and allows multi-layer pours for tailored applications. ## Description Whether you need quality foam for a boat, cooler, sculptures or any other type of project, this is THE HIGHEST QUALITY EXPANDING POLYURETHANE FOAM KIT YOU CAN GET! This is a closed cell polyurethane foam that is PERFECT IF YOU ARE LOOKING for:✔ Marine or Boat Foam Kits✔ Boat Structural Foam✔ Floating Foam Kits✔ Car Audio Foam Kits✔ Diy Polyurethane Foam Insulation Kit✔ Spray Foam Insulation KitsIf you are looking for the HIGHEST QUALITY foam, DO YOURSELF FAVOR AND BUY OUR POLYURETHANE FOAM FOR THE BEST EXPANDING POLYURETHANE FOAM KIT ON THE MARKET! Review: Easy to use - Easy to use, great results, as long as you use precise matching volume of both A & B. Called tech support to check temp. required. Needs to be above 65 degrees but not over 90 degrees. Below 65 will slow rising action but not overall ultimate rise according to them. Worked great. Review: Good product, perfect size for my small project. - Exactly what I needed for a small project and I'm very happy that I didnt have to spend more money buying more than I needed. ## Features - PERFECT Boat Foam for Structural Applications! Polyurethane Mix / Pour Foam. COAST GUARD CERTIFIABLE AS FLOTATION FOAM. Resistant To Water Penetration (Can Be Used For Flotation And Insulation). - 2 PART FOAM! Urethane Liquid Transforms Into A Rigid Closed Cell Foam Resistant To Water Absorption. - Once Cured, Poly Urethane Foam Can Be Laminated Over With Polyester, Epoxy Or Vinyl Ester Resin Without Problems. - LIQUID URETHANE EXPANSION FOAM Can Be Poured In Multiple Layers With Excellent Bonding Between Layers. - 1/2 Gallon Of Mixed Liquid Makes 1 Cubic Feet Of Foam. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007V21IQK | | Best Sellers Rank | #153,786 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #178 in Urethane Adhesives | | Date First Available | April 17, 2012 | | Is Discontinued By Manufacturer | No | | Item Weight | 5.3 pounds | | Item model number | 135436 | | Manufacturer | Fiberglass Coatings | | Product Dimensions | 9 x 2 x 7 inches | ## Images ![Polyurethane Expanding Liquid Foam 1/2 Gallon KIT, 4 LB Density Polyurethane Foam, Includes 1 Quart of A & 1 Quart Part B, 2 Part Polyurethane Marine Foam - Image 1](https://m.media-amazon.com/images/I/71d1Fx-5xzL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I need a closed cell foam to mold a motorcycle seat. Would this be the correct foam to use?** A: Hello Richard, this product is not recommended for molding motorcycle seats as it is firm. You will need to use memory foam. - Thank you, FGCI Customer Service **Q: what color is it when dry?** A: It drys to an off yellow|Amber color, this particular foam is extremely rigid as well. **Q: Making a form fitted seat cushion which of your products would suit me best. water and fire resistant, sand able, glue able. density? black. tks** A: This stuff i purchaced is by no means a cushion soft. If anything its like cement!! **Q: Can this be painted latex paint once cured?** A: Oh yes its HIGH DENCITY. (SP) ?? Very tuff stuff. Very dence. And can be formed ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to use *by W***R on April 20, 2019* Easy to use, great results, as long as you use precise matching volume of both A & B. Called tech support to check temp. required. Needs to be above 65 degrees but not over 90 degrees. Below 65 will slow rising action but not overall ultimate rise according to them. Worked great. ### ⭐⭐⭐⭐ Good product, perfect size for my small project. *by S***L on March 30, 2013* Exactly what I needed for a small project and I'm very happy that I didnt have to spend more money buying more than I needed. ### ⭐⭐⭐⭐⭐ and it is very easy to use and so much more economical than buying ... *by J***R on September 4, 2017* I use this to reinforce the "fin can" of high power rockets, and it is very easy to use and so much more economical than buying small quantities from rocketry vendors. ## Frequently Bought Together - Polyurethane Expanding Liquid Foam 1/2 Gallon KIT, 4 LB Density Polyurethane Foam, Includes 1 Quart of A & 1 Quart Part B, 2 Part Polyurethane Marine Foam - TotalBoat 5:1 Marine Epoxy Resin Kit for Bonding, Filleting, Coating, and Laminating - Use for Fiberglass, Wood, Carbon Fiber, Boat Building, Repairs, Woodworking (Gallon, Slow Hardener, Pumps) - Lifeboat Urethane Pour Foam - 2lb Density - 1 Gallon Kit 2-Part Closed Cell Rigid Pour Foam - Fast-Acting Formula - Great for Boat Buoyancy, Flotation, Filling, Soundproofing, & Insulation --- ## 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.pl/products/13105063-polyurethane-expanding-liquid-foam-1-2-gallon-kit-4-lb](https://www.desertcart.pl/products/13105063-polyurethane-expanding-liquid-foam-1-2-gallon-kit-4-lb) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-08*