We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
🛠️ Float, fill, and fortify—foam that works as hard as you do!
Fiberglass Supply Depot’s 4 lb density expanding pour foam is a high-performance, 2-part polyurethane closed-cell liquid foam designed for boat and dock flotation, soundproofing, insulation, and filling voids. This 2-quart kit mixes easily, cures fully in 5 minutes, and offers water resistance and compatibility with various resins, making it a versatile and reliable choice for professional-grade projects.
| ASIN | B08T21WRF9 |
| Best Sellers Rank | #392,970 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #356 in Urethane Adhesives |
| Brand | Fiberglass Supply Depot |
| Color | Clear |
| Date First Available | January 14, 2021 |
| Full Cure Time | 5 Minutes |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 2 Quarts |
| Item Weight | 5.57 pounds |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Material | Foam,Resin |
| Package Dimensions | 9.21 x 7.36 x 4.8 inches |
| Package Information | Can |
| Special Feature | soundproofing, insulation, buoyancy, laminating with certain resins without melting |
| Specific Uses For Product | Flooring, Boat, Dock, Insulation, Soundproofing |
| UPC | 819794022910 |
| Unit Count | 1 Count |
| Viscosity | High |
| Viscosity Level | High |
| Water Resistance Level | Water Resistant |
J**T
Works well
Easy to use and set up well. Product worked predictably and set up uniformly. Another brand I have used in the past started not performing as desired as it had a violent reaction and non uniform results making it unusable. Cost for these smaller bottles was excessive, but at least it worked!
P**K
Prompt shipping, easy pour, easy mix.
Sets up just about the same as other brands, so the advantage is the packaging. The bottles have a 2-part seal, so less risk of moisture contaminating the components and spoiling the bottom half of the container. Good move! Tip - refrigerate part B to get longer pot life.
R**H
Great for repairing old fence
got this to repair a fence post that was searing badly and nearly failed. I dug around it a bit then filled this material in the hole. It did a great repair. Highly recommend it
M**6
great foam
Worked great,good prices.
Trustpilot
2 days ago
2 weeks ago