--- product_id: 13105063 title: "FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam | Two-part pour foam for flotation, insulation & filling voids in boats & docks. Multiple sizes & densities, Made in USA" brand: "fgci" price: "R2260" currency: ZAR in_stock: true category: "Fgci" url: https://www.desertcart.co.za/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb store_origin: ZA region: South Africa --- # 2-part rapid expansion 4 lb density marine-grade Made in USA, trusted quality FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam | Two-part pour foam for flotation, insulation & filling voids in boats & docks. Multiple sizes & densities, Made in USA **Brand:** fgci **Price:** R2260 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the void, float with confidence—foam that works as hard as you do! ## Quick Answers - **What is this?** FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam | Two-part pour foam for flotation, insulation & filling voids in boats & docks. Multiple sizes & densities, Made in USA by fgci - **How much does it cost?** R2260 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/13105063-fgci-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 - • **Compact 1/2 Gallon Kit:** Ready-to-use, portable kit designed for professional-grade projects without waste or guesswork. - • **Proudly Made in the USA:** Crafted by Fiberglass Coatings with 60+ years of marine expertise—quality you can trust to last. - • **Optimal 4 Lb Density Strength:** Engineered to balance robust structural support with superior flotation—ideal for marine and dock applications. - • **Precision-Mixed 2-Part Formula:** Pre-measured parts A & B ensure flawless, rapid expansion for perfect void filling every time. - • **Versatile Marine & Structural Use:** Seamlessly fills hulls, transoms, pontoons, and insulation cavities with rigid, closed-cell foam. ## Overview FGCI Expanding Liquid Foam 1/2 Gallon Kit is a two-part polyurethane foam designed for marine flotation, insulation, and void filling. With a 4 lb density, it offers a perfect balance of strength and buoyancy. The kit includes pre-measured parts for easy mixing and rapid expansion into a rigid, closed-cell structure. Made in the USA by Fiberglass Coatings, it delivers trusted durability for professional marine and structural applications. ## Description "FGCI Polyurethane Expanding Liquid Foam 1/2 Gallon Kit in 4 Lb density is a two-part structural foam engineered for marine flotation, void fill, and insulation applications. Includes 1 quart each parts A and B for accurate mixing.When mixed, the liquid foam expands rapidly to fill voids, hulls, and hollow cavities, then cures to a rigid, closed-cell structure. 4 Lb density provides a balance of structural strength and flotation suited to the intended application.Made in the USA by Fiberglass Coatings, LLC in Saint Petersburg, Florida, with over 60 years of marine and composite expertise." ## Features - 2 PART EXPANDING FOAM: Two-part polyurethane foam expands rapidly when mixed, filling voids, hulls, and hollow cavities with a rigid, closed-cell structure. - 4 Lb DENSITY: 4 Lb density balances structural strength and flotation, suiting marine flotation, void fill, and insulation applications appropriate to the rating. - COMPLETE 1/2 Gallon KIT: Includes 1 quart each of part A and part B, giving you accurate, pre-measured quantities for reliable mix ratios straight out of the kit. - MARINE AND STRUCTURAL USE: Engineered for boat flotation, transom fill, pontoon foam, void packing, and general insulation where rigid closed-cell foam is required. - MADE IN THE USA: Manufactured by Fiberglass Coatings, LLC in Saint Petersburg, Florida, backed by over 60 years of marine and composite coatings expertise. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007V21IQK | | Best Sellers Rank | #113,519 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #147 in Urethane Adhesives | | Brand Name | FGCI | | Compatible Material | Foam | | Container Type | Handle Container | | Customer Reviews | 4.0 4.0 out of 5 stars (13) | | Included Components | Kit | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Weight | 5.3 Pounds | | Manufacturer | Fiberglass Coatings | | Material Type | Polyurethane | | Model | 135436 | | Number of Pieces | 2 | | Part Number | 135436 | | Specific Uses For Product | Marine | | Unit Count | 1.0 Count | | Volume | 1 Quarts | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** FGCI - **Item Form:** Liquid - **Item Package Quantity:** 1 - **Material:** Polyurethane - **Specific Uses For Product:** Marine ## Images ![FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam | Two-part pour foam for flotation, insulation & filling voids in boats & docks. Multiple sizes & densities, Made in USA - 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 ## 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.co.za/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb](https://www.desertcart.co.za/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-23*