--- product_id: 23482186 title: "2 Lb Density Expanding Foam Kit, 2 Part Closed Cell Pourable Polyurethane for Boat Flotation, Insulation, Reinforcement and Void Filling (2 Gallon Kit)" brand: "totalboat" price: "1146 zł" currency: PLN in_stock: true reviews_count: 6 category: "Total Boat" url: https://www.desertcart.pl/products/23482186-2-lb-density-expanding-foam-kit-2-part-closed-cell store_origin: PL region: Poland --- # 94% closed cell - superior water resistance 5 min cure time - rapid hardening 2 lb density - ultra lightweight strength 2 Lb Density Expanding Foam Kit, 2 Part Closed Cell Pourable Polyurethane for Boat Flotation, Insulation, Reinforcement and Void Filling (2 Gallon Kit) **Brand:** totalboat **Price:** 1146 zł **Availability:** ✅ In Stock ## Summary > 🚤 Float, Fill, and Fortify Like a Pro — Stay Ahead of the Wave! ## Quick Answers - **What is this?** 2 Lb Density Expanding Foam Kit, 2 Part Closed Cell Pourable Polyurethane for Boat Flotation, Insulation, Reinforcement and Void Filling (2 Gallon Kit) by totalboat - **How much does it cost?** 1146 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/23482186-2-lb-density-expanding-foam-kit-2-part-closed-cell) ## Best For - totalboat enthusiasts ## Why This Product - Trusted totalboat brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready When You Are:** Optimal working temp 75-85°F ensures peak expansion and rigidity in just minutes. - • **Marine-Grade Durability:** USCG-compliant closed cell foam resists water, oil, and solvents—built to last on the water. - • **Multi-Functional Mastery:** From buoyancy to soundproofing and insulation, one kit covers all your marine and DIY needs. - • **Effortless 1:1 Mix & Pour:** Simplify your project with a foolproof equal-part formula that expands rapidly for flawless fills. - • **Precision Layering for Perfect Results:** Pour in stages to build strength and shape complex voids with zero shrinkage. ## Overview TotalBoat’s 2 lb density expanding polyurethane foam kit delivers fast-setting, closed cell foam engineered for marine flotation, insulation, and soundproofing. With a simple 1:1 mix ratio and rapid 5-minute cure time, it offers superior water resistance and structural reinforcement for nonstructural applications. US Coast Guard compliant and versatile, this 2-gallon kit yields up to 8 cubic feet of durable, lightweight foam perfect for boat decks, pontoons, and creative DIY projects. ## Description Be safer and more comfortable on your boat with Total Boat Two Part Polyurethane Marine Expanding Foam. This US Coast Guard compliant pour foam is commonly used to add buoyancy to keep a boat afloat if hull integrity is compromised. Its closed cell foam structure enables it to resist water absorption for many years, making it ideal for filling pontoons and cavities in kayaks and beneath boat decks. 2 Lb. density expanding urethane foam kit mixes to form a fast-setting, pourable liquid foam that cures to a rigid, lightweight material that's also great for filling gaps, soundproofing, and providing thermal foam insulation and nonstructural support in a variety of marine, household and art applications.Two part flotation foam has a simple 1:1 mix ratio that makes it easy to use. Warm conditions of 75-85°F are very important, as are accurate measuring, thorough mixing, and proper venting of the area where the foam is to be applied, because it expands tremendously by volume. Just mix one part resin and one part activator, stir vigorously for about 25 seconds to mix completely and pour immediately into the prepared area. Expanding foam will distribute itself evenly - even into irregularly shaped areas. Cured foam hardens into shape, with minimal shrinkage, and can be cut to shape easily. Once fully cured, any areas exposed to sunlight should be laminated or painted over with polyester, epoxy or vinyl ester coatings. For best results filling larger areas, pour in multiple layers to allow proper cure and maximum strength bonding between layers. Always wear proper eye, face and clothing protection when you mix and pour two part marine foam.Compare to Evercoat Marine Foam-It, FGCI Polyurethane Foam, Polymer Planet Liquid Urethane Foam, Morris Materials Urethane Pour Foam, True Composites Pour Foam, and System Three Flotation Foam for boats. All TotalBoat products provide great value and great results. 100% made in the USA. Review: quality - great item for repairing or replacing your foatation foam Review: Great for all kinds of jobs. Follow directions / Read some reviews before using though. - This expanding foam is really useful for me in multiple jobs / hobbies. I build molds and use it to pour faux stone / rock panels which I then use in home remodels, building, etc... It can actually be used to create molds as well. I also build fiberglass / carbon fiber panels for automotive projects and use this foam to pull positives off of simple parts like fenders and other flat-ish stuff. The key to working with this product is to be prepared. Use acetone to clean. Have mixing cups, rags, gloves, tape, painter's plastic, mold release, etc... When it is in liquid form it's very thin and will easily escape through small cracks, so be sure to seal molds up well to minimize loss and mess. Caulking works well. As everyone says, it works very quickly once mixed. Heating the product up will make it take off even quicker, and it will also increase the yield significantly. I, personally use a heat gun on low from a distance to heat each cup before mixing. Lastly, don't disturb it when it is beginning to harden and take shape. Doing so will cause it to "deflate" in that area, kind of stunting its growth. Follow directions and read some other reviews for insights and tips. You'll be pro in no time. ## Features - LIGHTWEIGHT, TWO PART POLYURETHANE FOAM: Ideal for adding buoyancy, thermal insulation, soundproofing, and filling gaps or voids; for nonstructural applications only; tested in accordance with U.S. Coast Guard Regulation # 33 CFR 183.114 - EASY TO USE: Liquid urethane pour foam has a simple 1:1 mix ratio, expands rapidly & hardens in place in about 5 min. at 70-80°F; to build multiple layers for filling under boat decks, pour expanding foam in separate batches - 94% CLOSED CELL FOAM: Perfect for marine applications; resists water absorption and damage from gas, oil or solvents; once cured, foam can be coated with polyester, epoxy or vinyl ester resin; can also be easily cut or carved to shape - IDEAL WORKING TEMPERATURE IS 75-85°F; proper temperature, timing, mixing and venting are critical for proper foam expansion; below 75°F expansion decreases; after mixing, the foam expands rapidly and becomes rigid, so clean the surface in advance and be ready to pour - AVAILABLE IN A 2 QUART KIT AND A 2 GALLON KIT; Yield: 2 Quart Kit – 2 cubic ft; 2 Gallon Kit – 8 cubic ft; Flotation Range for 2lb foam: 75 lbs per mixed 2 quart kit, and 300 lbs per mixed 2 gallon kit; shelf life is 6 months from date of manufacture ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01AAP3ILC | | Best Sellers Rank | #34,053 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #31 in Boat Painting Supplies | | Brand | TotalBoat | | Color | Clear | | Date First Available | January 7, 2016 | | Full Cure Time | 3.6E+2 Minutes | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Volume | 2 Gallons | | Item Weight | 20 pounds | | Item model number | TB-FOAM | | Manufacturer | TotalBoat | | Material | Polyurethane Resin | | Package Information | Can | | Product Dimensions | 8.5 x 6.5 x 10 inches | | Special Feature | Easy-to-use 1:1 mix ratio, Multi-purpose for marine flotation, insulation, and soundproofing | | Specific Uses For Product | Fabric, Art, Repair, Flooring, Woodworking, Furniture, Wood, Wall Repair, Countertop | | Tensile Strength | 500 Pounds Per Square Inch | | UPC | 811932022103 | | Unit Count | 256.0 Fluid Ounces | | Viscosity | low | | Viscosity Level | Low | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** TotalBoat - **Item Form:** Liquid - **Material:** Polyurethane Resin - **Special Feature:** Easy-to-use 1:1 mix ratio, Multi-purpose for marine flotation, insulation, and soundproofing - **Specific Uses For Product:** Fabric, Art, Repair, Flooring, Woodworking, Furniture, Wood, Wall Repair, Countertop ## Images ![2 Lb Density Expanding Foam Kit, 2 Part Closed Cell Pourable Polyurethane for Boat Flotation, Insulation, Reinforcement and Void Filling (2 Gallon Kit) - Image 1](https://m.media-amazon.com/images/I/71-8XU1av-L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can you use on basement cracks** A: The foam is made to fill voids in boats for flotation and is not structurally strong. That said, it will fill cracks as long as you're not depending on it for strength. After it is poured, it will expand. It pours like water so it might be difficult to get it where you want it on vertical walls. Easy to pour on a floor crack but not strong enough to walk on. **Q: What is the flotation range for the 2g kit? will it support 1500 to 2000 lb floating dock?** A: 1 cubic foot of 2 lb. Polyurethane close cell foam will float 60.2 lbs. per US Coast Guard regulations of Flotation. So by the their formula it should float about 480 lbs. of weight. So no you would need 6 2 gallon kits to float just the dock. That's not counting any weight of people that stand on the dock .... **Q: How much does this cover?** A: A two gallon kit (1 gallon resin + 1 gallon activator) will yield 8 cubic feet which is equal to 59.84 gallons. 1 cubic foot equals 7.48 gallons. **Q: Can the 2lb product be used to fill the void in my kayak made of high-density polyethylene or will it deform?** A: It should work just fine. Use a smaller amount at first and then mixed more as needed until the void was filled. I was not not sure how much it would expand so I started with a smaller amount . It expands and hardens quickly. I don't think it will deform your kayak, but it will expand out of any cracks and holes, but you can cut off any foam you don't want. ## Customer Reviews ### ⭐⭐⭐⭐⭐ quality *by A***R on February 19, 2026* great item for repairing or replacing your foatation foam ### ⭐⭐⭐⭐⭐ Great for all kinds of jobs. Follow directions / Read some reviews before using though. *by F***0 on June 18, 2023* This expanding foam is really useful for me in multiple jobs / hobbies. I build molds and use it to pour faux stone / rock panels which I then use in home remodels, building, etc... It can actually be used to create molds as well. I also build fiberglass / carbon fiber panels for automotive projects and use this foam to pull positives off of simple parts like fenders and other flat-ish stuff. The key to working with this product is to be prepared. Use acetone to clean. Have mixing cups, rags, gloves, tape, painter's plastic, mold release, etc... When it is in liquid form it's very thin and will easily escape through small cracks, so be sure to seal molds up well to minimize loss and mess. Caulking works well. As everyone says, it works very quickly once mixed. Heating the product up will make it take off even quicker, and it will also increase the yield significantly. I, personally use a heat gun on low from a distance to heat each cup before mixing. Lastly, don't disturb it when it is beginning to harden and take shape. Doing so will cause it to "deflate" in that area, kind of stunting its growth. Follow directions and read some other reviews for insights and tips. You'll be pro in no time. ### ⭐⭐⭐⭐⭐ Some hints for people using this. *by B***U on July 12, 2022* So I have used a ton of this for a few projects. This will hopefully help some of you guys. 1: buy a couple just jugs of acetone. It really helps cleanup the sticky goo you will have to deal with. 2. Invest in the cheap plastic mixing cups with the proportion lines. If you are doing semi enclosed areas don't poor to much in so the foam can full expand and you do not waste product. 3. Buy one of those cheap rechargable milk froather mixers they have for coffee. It makes mixing things way easier and more consistent. It will likely be ruined after, but they are only like 12 bucks. 4. Buy some small silicone scrapers like what you use for the kitchen. If you let them sit in acetone in a cup, you can use it to scrape the left overs from your mix cups after you pour and save some mess. You can usually get several Uses out of each cup doing this and reduce the mess. 5. Nitrile gloves are must. This stuff gets every where.. You can use Acetone to clean up. 6. Probably the most important part - chill the two parts in the refrigerator overnight. This slows the reaction and gives you time to actually mix it throuroughly and pour it without having to rush around. Once it warms. It will behave normally and start expanding. Lastly if you spill it on accident, left it dry completely before cleaning up. It's much easier to dea with dry. I'm working on an idea to hook this to a gun the auto mixes components and despenses it in a more controlled manner. If I have any success I will post and update. ## Frequently Bought Together - TotalBoat 2 Lb Density Expanding Foam Kit, 2 Part Closed Cell Pourable Polyurethane for Boat Flotation, Insulation, Reinforcement and Void Filling (2 Gallon Kit) - Custom Shop Paint Mixing Cups Plastic Measuring Cup Epoxy Resin, Disposable or Reusable, 32-Ounce Quart - Pack of 12 - Graduated, Mixing Ratios, Automotive Painting Acrylic Art Crafts Kitchen - TCP Global Wood Paint Mixing Sticks - 50 Pack - Automotive, Crafts, Airbrush, Art --- ## 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/23482186-2-lb-density-expanding-foam-kit-2-part-closed-cell](https://www.desertcart.pl/products/23482186-2-lb-density-expanding-foam-kit-2-part-closed-cell) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*