---
product_id: 468433268
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: "794 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Fiberglass Supply Depot"
url: https://www.desertcart.pl/products/468433268-6-lb-density-expanding-pour-foam-2-part-polyurethane-closed
store_origin: PL
region: Poland
---

# 1.5 cu ft expansion volume per kit 5 min full cure time for fast results 6 lb density for durable strength 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:** 794 zł
**Availability:** ✅ In Stock

## Summary

> 🚀 Expand Your Projects with Pro-Grade Foam Power!

## 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?** 794 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/468433268-6-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

- • **Rapid Expansion Power:** Expands quickly within 5 minutes to fill voids and secure structures before you know it.
- • **Versatile Application:** Perfect for boats, docks, carving, soundproofing, and filling hard-to-reach spaces with ease.
- • **Resin-Compatible Finish:** Can be laminated with polyester, epoxy, or vinyl ester resins without melting—ideal for custom projects.
- • **Professional-Grade Density:** 6 lb density foam delivers superior durability and stability for flotation, soundproofing, and insulation.
- • **Precision Mixing & Working Time:** 45 seconds working time demands expert handling—get it right and avoid costly mistakes.

## Overview

Fiberglass Supply Depot’s 6 lb density expanding pour foam is a 2-part polyurethane closed-cell liquid foam kit that rapidly expands to 1.5 cubic feet, curing fully in 5 minutes. Designed for professional use in flotation, soundproofing, insulation, and sculpting, it bonds aggressively and can be laminated with various resins. Ideal for millennial pros seeking reliable, fast-curing solutions to elevate their DIY or industrial projects.

## Description

Product description

Review: Performed exactly as advertised. - Used this to insulate around a bathtub and it worked great. The foam expanded exactly as expected and provided a solid, supportive fill without over-expanding or creating pressure issues. Once cured, it formed a dense, durable barrier that helps with both insulation and soundproofing. Just be sure to follow the mixing directions carefully and prep your area—it sets fast. Highly recommend for home projects where a strong, stable fill is needed
Review: Works great - Great products exactly what I ordered and needed

## Features

- Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
- 6LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 1.5 cubic feet. If you want a high expanding foam look at our 2lb foam. 6lb foam does not expand much from its liqued state.
- Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
- The 6LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
- All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBH4XQ9P |
| Best Sellers Rank | #26,123 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #57 in Urethane Adhesives |
| Brand | Fiberglass Supply Depot |
| Brand Name | Fiberglass Supply Depot |
| Coverage | 1.5 cubic feet |
| Customer Reviews | 4.4 out of 5 stars 189 Reviews |
| Global Trade Identification Number | 00819794023221 |
| Item Weight | 6 Pounds |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Manufacturer Part Number | FBACPOLY6LBGK |
| Material | Foam,Resin |
| Material Type | Foam,Resin |
| Model Number | FBACPOLY6LBGK |
| Number of Packs | 1 |
| Recommended Uses For Product | Soundproofing, Insulation, Flotation, Filling Voids, Sculpting, Casting |
| Unit Count | 128 Fluid Ounces |

## Product Details

- **Brand:** Fiberglass Supply Depot
- **Color:** Clear
- **Item Form:** Liquid
- **Item Package Quantity:** 1
- **Material:** Foam,Resin

## 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/61Gi2RbcrRL.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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Performed exactly as advertised.
*by H***S on May 2, 2025*

Used this to insulate around a bathtub and it worked great. The foam expanded exactly as expected and provided a solid, supportive fill without over-expanding or creating pressure issues. Once cured, it formed a dense, durable barrier that helps with both insulation and soundproofing. Just be sure to follow the mixing directions carefully and prep your area—it sets fast. Highly recommend for home projects where a strong, stable fill is needed

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

Great products exactly what I ordered and needed

### ⭐⭐⭐⭐⭐ Expands Well & Sets Very Hard
*by T***T on April 21, 2026*

This is a great product and a good value for the money. It expands well when thoroughly mixed and sets very hard once cured. It worked well for foundation washouts, concrete pads, and walkways. Definitely wear gloves during application—it can get messy. Pros: expands well, cures very hard, good value, great for repairs Cons: can be messy to work with Would I recommend? Yes—solid option for concrete and foundation work

## 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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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-06-09*