--- product_id: 13105063 title: "FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam" brand: "fgci" price: "AR$268794" currency: ARS in_stock: true reviews_count: 8 category: "Fgci" url: https://www.desertcart.com.ar/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb store_origin: AR region: Argentina --- # Pre-measured 1/2 gallon kit 2-part rapid expansion 4 lb density marine-grade FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam **Brand:** fgci **Price:** AR$268794 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the deal with foam that floats your boat and your projects! ## Quick Answers - **What is this?** FGCI Expanding Liquid Foam 1/2 Gallon Kit, 4 Lb Density 2-Part Marine Foam by fgci - **How much does it cost?** AR$268794 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/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 - • **Rapid Void Filling:** Expands quickly to fill hulls, cavities, and voids with rigid, closed-cell foam. - • **Marine-Grade Strength:** 4 lb density foam balances robust structural support with superior flotation. - • **Versatile Application:** Perfect for boat flotation, transom fill, pontoon foam, and insulation needs. - • **Precision-Mixed Performance:** Pre-measured parts A & B ensure flawless, consistent expansion every time. - • **Trusted American Craftsmanship:** Made in the USA by FGCI with 60+ years of marine coating expertise. ## Overview FGCI Expanding Liquid Foam 1/2 Gallon Kit is a two-part polyurethane foam designed for marine and structural use. With a 4 lb density, it offers an ideal balance of strength and flotation, expanding rapidly to fill voids and cure into a rigid, closed-cell structure. The kit includes pre-measured parts for precise mixing, ensuring reliable results. Manufactured in the USA by Fiberglass Coatings, LLC, it leverages over six decades of marine expertise to deliver professional-grade performance. ## 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." 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 - 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 | #146,921 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #195 in Urethane Adhesives | | Brand | FGCI | | Brand Name | FGCI | | Compatible Material | Foam | | Container Type | Handle Container | | Customer Reviews | 4.0 out of 5 stars 13 Reviews | | Included Components | Kit | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Weight | 5.3 pounds | | Manufacturer | Fiberglass Coatings | | Material | Polyurethane | | Material Type | Polyurethane | | Model | 135436 | | Number of Pieces | 2 | | Package Information | Handle Container | | Part Number | 135436 | | Specific Uses For Product | Marine | | Unit Count | 1 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 - 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. ### ⭐⭐⭐⭐ Four Stars *by V***E on June 1, 2016* Just what I needed for by boat repair. ## 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.com.ar/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb](https://www.desertcart.com.ar/products/13105063-fgci-expanding-liquid-foam-1-2-gallon-kit-4-lb) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-17*