---
product_id: 684403191
title: "6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)"
brand: "fiberglass supply depot"
price: "4544 DH"
currency: MAD
in_stock: true
category: "Fiberglass Supply Depot"
url: https://www.desertcart.ma/products/684403191-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed
store_origin: MA
region: Morocco
---

# Expands 4x volume rapidly Closed-cell foam for soundproofing 6 lb density for max buoyancy 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

**Brand:** fiberglass supply depot
**Price:** 4544 DH
**Availability:** ✅ In Stock

## Summary

> 🛠️ Expand your projects, not your worries!

## Quick Answers

- **What is this?** 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) by fiberglass supply depot
- **How much does it cost?** 4544 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/684403191-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed)

## Best For

- fiberglass supply depot enthusiasts

## Why This Product

- Trusted fiberglass supply depot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rock-Solid Buoyancy:** 6 lb density ensures unmatched flotation and durability for marine and dock applications.
- • **Rapid Expansion Power:** Expands up to 4 times its liquid volume in under 60 seconds—get the job done fast, no waiting.
- • **DIY-Proven Reliability:** Trusted by pros and hobbyists alike for carving, mold-making, and structural reinforcement.
- • **Precision Void Filling:** Aggressively adheres and fills gaps, cracks, and cavities with a tough, long-lasting seal.
- • **Versatile Soundproofing & Insulation:** Closed-cell polyurethane blocks noise and seals thermal leaks for a quieter, energy-efficient space.

## Overview

This 1-gallon 2-part polyurethane foam kit delivers a dense 6 lb closed-cell foam that rapidly expands 4x its liquid volume, providing superior buoyancy, soundproofing, insulation, and void filling. Ideal for boats, docks, and DIY projects requiring durable, moisture-resistant sealing and structural support.

## Description

6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) : desertcart.co.uk: DIY & Tools

## Features

- Causes skin irritation.
- Harmful if inhaled.
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- May cause an allergic skin reaction.
- May cause damage to organs (respiratory tract) through prolonged or repeated exposure (if inhaled).
- May cause respiratory irritation.
- Soundproofing, Insulation, Buoyancy

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBH4XQ9P |
| Best Sellers Rank | 364,493 in DIY & Tools ( See Top 100 in DIY & Tools ) 325 in Expanding Foams |
| Brand | Fiberglass Supply Depot |
| Colour | Clear |
| Compatible Material | Polyester, Epoxy, Vinyl Ester Resin, Wood, Metal, Plastic, Ceramic, Glass, Rubber, Stone, Fiberglass, Faux Leather, Fabric, Paper, Cardboard, Gemstone |
| Container Type | Gallon |
| Customer Reviews | 4.4 4.4 out of 5 stars (183) |
| Full Cure Time | 5 Minutes |
| Global Trade Identification Number | 00819794023221 |
| Item Form | Liquid, Solid |
| Item Package Quantity | 1 |
| Item Volume | 128 Fluid Ounces |
| Item Weight | 6 Pounds |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Manufacturer Part Number | FBACPOLY6LBGK |
| Material | Resin |
| Model Number | FBACPOLY6LBGK |
| Number of Pieces | 2 |
| Other Special Features of the Product | Soundproofing, Insulation, Buoyancy |
| Specific Uses For Product | Boats, Dock Flotation, Soundproofing, Filling Voids, Insulation |
| Unit Count | 1.0 count |
| Viscosity Level | Low |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Fiberglass Supply Depot
- **Item form:** Liquid, Solid
- **Material:** Resin
- **Special feature:** Soundproofing, Insulation, Buoyancy
- **Specific uses for product:** Boats, Dock Flotation, Soundproofing, Filling Voids, Insulation

## Images

![6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 1](https://m.media-amazon.com/images/I/81Do0u1pU6L.jpg)
![6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 2](https://m.media-amazon.com/images/I/81onsl4rjEL.jpg)
![6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 3](https://m.media-amazon.com/images/I/71vQaydgXGL.jpg)
![6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 4](https://m.media-amazon.com/images/I/81s3RjkkMiL.jpg)
![6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 5](https://m.media-amazon.com/images/I/71fqAimxMaL.jpg)

## Questions & Answers

**Q: could this me used for settng fence posts?**
A: This foam is very strong & it will bond doesn't soak in ground I would not be afraid to use as a fence post filler.

**Q: Will this skin inside a mold? Self skinning without direct air or moisture exposure for casting.**
A: No this will not set up without air

**Q: What is the shelf life of this product?**
A: Approximately 6 months from the manufacture date.

**Q: Will this work for archery targets?**
A: Yes this foam will expand to fill in shot out areas on a foam target you can sand flush once it hardens let it set up for about an hour

## Frequently Bought Together

- 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)
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- 4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

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**Shop now:** [https://www.desertcart.ma/products/684403191-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed](https://www.desertcart.ma/products/684403191-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed)

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-05-08*