---
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: "B/.521"
currency: PAB
in_stock: true
reviews_count: 5
category: "Fiberglass Supply Depot"
url: https://www.desertcart.com.pa/products/684403191-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed
store_origin: PA
region: Panama
---

# Closed-cell foam for soundproofing 5 min full cure time 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:** B/.521
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your projects with foam that floats, seals, and silences!

## 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?** B/.521 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/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

- • **Speedy Setup:** Fully cures in just 5 minutes—get back to your project fast
- • **DIY Essential:** 1-gallon kit with low viscosity liquid for easy, precise pouring
- • **Seal & Silence:** Closed-cell structure blocks sound and fills voids seamlessly
- • **Versatile Power:** Perfect for carving, insulation, and filling hard-to-reach spaces
- • **Float Like a Pro:** 6 lb density ensures superior dock & boat flotation support

## Overview

This 1-gallon 2-part polyurethane expanding foam features a dense 6 lb closed-cell formula designed for superior buoyancy, soundproofing, and insulation. It cures fully in 5 minutes, making it ideal for boats, dock flotation, filling voids, and carving. Low viscosity liquid ensures easy application, while its multi-use design supports professional-grade DIY and repair projects.

## 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

Review: Great
Review: Works great

## 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 | 175,863 in DIY & Tools ( See Top 100 in DIY & Tools ) 185 in Expanding Foams |
| Brand | Fiberglass Supply Depot |
| Colour | Clear |
| Compatible Material | Vinyl |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 157 Reviews |
| Full Cure Time | 5 Minutes |
| Global Trade Identification Number | 00819794023221 |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 128 Fluid Ounces |
| Item Weight | 6 Pounds |
| Item form | Liquid |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Material | Resin |
| Model Number | FBACPOLY6LBGK |
| Other Special Features of the Product | Soundproofing, Insulation, Buoyancy |
| Special feature | Soundproofing, Insulation, Buoyancy |
| Specific Uses For Product | Boats, Dock Flotation, Soundproofing, Filling Voids, Insulation |
| Specific uses for product | Boats, Dock Flotation, Soundproofing, Filling Voids, Insulation |
| Unit Count | 1.0 Count |
| Viscosity | Low |
| Water Resistance Level | Not Water Resistant |

## Product Details

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

## 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/71W6+Fk0w6L.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/71fqAimxMaL.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/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 5](https://m.media-amazon.com/images/I/81onsl4rjEL.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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by Z***N on 26 November 2025*



### ⭐⭐⭐⭐⭐ Works great
*by N***S on 16 November 2025*



### ⭐⭐⭐⭐⭐ Great product
*by F***Y on 29 October 2025*



## Frequently Bought Together

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

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-01-22*