---
product_id: 423761959
title: "2 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)"
brand: "fiberglass supply depot"
price: "AED 699"
currency: AED
in_stock: true
reviews_count: 5
category: "Fiberglass Supply Depot"
url: https://www.desertcart.ae/products/423761959-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed
store_origin: AE
region: United Arab Emirates
---

# 5 cubic feet coverage per 1-gallon kit 45 sec working time, 5 min full expansion 2 lb density for optimal buoyancy 2 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)

**Brand:** fiberglass supply depot
**Price:** AED 699
**Availability:** ✅ In Stock

## Summary

> 🚤 Float, Fill, and Fortify—The Foam That Means Business

## Quick Answers

- **What is this?** 2 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) by fiberglass supply depot
- **How much does it cost?** AED 699 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/423761959-2-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 & Cure:** Mix and pour with a quick 45-second working window and full expansion in just 5 minutes—perfect for efficient project flow.
- • **Resin-Compatible Finish:** Fully cured foam can be laminated with polyester, epoxy, or vinyl ester resins without melting, ensuring seamless integration.
- • **Versatile Multi-Use Solution:** Ideal for soundproofing, thermal insulation, and structural void filling—one kit, endless professional applications.
- • **Precision-Engineered Buoyancy:** 2 lb density closed-cell foam delivers reliable flotation and void filling without added weight.
- • **Temperature-Optimized Performance:** Designed for best results at 75-80°F, guaranteeing consistent expansion and coverage in your workspace.

## Overview

This 1-gallon 2-part polyurethane expanding foam kit produces 5 cubic feet of 2 lb density closed-cell foam, engineered for flotation, soundproofing, insulation, and void filling. With a rapid 45-second working time and compatibility with common resins, it’s the go-to solution for professionals seeking lightweight, durable, and versatile foam that performs under optimal temperature conditions.

## Description

Product Description

Review: desertcart package handling is poor Product is great - arrived a day late and the packaging was crushed so I would say whoever loaded it or possibly the driver handled the package very poorly! The foam product is awesome easy to use works very well I will definitely buy again
Review: Great flotation foam - Easy to pour

## 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 through prolonged or repeated exposure.
- May cause respiratory irritation.
- 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.
- This expandable foam is recommended for void filling in nonstructural applications. It can be poured underneath decks and inside cavities where a lightweight flotation foam is needed to provide buoyancy.
- 2# Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 5 cubic feet.
- Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
- 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 | B08RP8DNDB |
| Best Sellers Rank | 415,090 in DIY & Tools ( See Top 100 in DIY & Tools ) 368 in Expanding Foams |
| Brand | Fiberglass Supply Depot |
| Coverage | 5 cubic feet |
| Customer Reviews | 4.6 out of 5 stars 274 Reviews |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Material | Polyurethane |
| Model Number | Poly2lbgk |
| Number of Packs | 2 |
| Number of items | 2 |
| Part Number | Poly2lbgk |
| Recommended Uses For Product | Soundproofing, Thermal Insulation, Flotation, Void Filling |
| Recommended uses for product | Soundproofing, Thermal Insulation, Flotation, Void Filling |
| UPC | 819794022859 |

## Product Details

- **Brand:** Fiberglass Supply Depot
- **Manufacturer:** Fiberglass Supply Depot Inc.
- **Material:** Polyurethane
- **Number of Packs:** 2
- **Number of items:** 2

## Images

![2 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) - Image 1](https://m.media-amazon.com/images/I/61ldT-7o9dL.jpg)
![2 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) - Image 2](https://m.media-amazon.com/images/I/8189VtbwU2L.jpg)
![2 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) - Image 3](https://m.media-amazon.com/images/I/71Gbm9XW+IL.jpg)
![2 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) - Image 4](https://m.media-amazon.com/images/I/71Jn4WV0S0L.jpg)
![2 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) - Image 5](https://m.media-amazon.com/images/I/81mbAHsaZfL.jpg)

## Questions & Answers

**Q: Can the Part B liquid be colored so that the expanded foam will be a color other than beige?**
A: unknown 
It can be painted.

**Q: can this be cut with hot wire ?**
A: Yes, but it is high density. It will not cut as easily as Styrofoam

**Q: Does this require moisture to cure?**
A: This will not cure with moisture present.

**Q: whats the difference between 2#,4# & 6#? is the polyurethane hydrophobic or hydrophilic?**
A: To clarify, each density of foam has a different expansion rate, so they are all used for different applications. Please refer to the reference chart of each listing for details regarding expansion.

This material is hydrophobic.

-FSD

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazon package handling is poor Product is great
*by G***T on 7 May 2026*

arrived a day late and the packaging was crushed so I would say whoever loaded it or possibly the driver handled the package very poorly! The foam product is awesome easy to use works very well I will definitely buy again

### ⭐⭐⭐⭐⭐ Great flotation foam
*by B***N on 13 April 2025*

Easy to pour

### ⭐⭐⭐⭐⭐ Works Okay for fence posts
*by E***D on 20 October 2025*

I wanted to try this foam for setting fence posts instead of buying the stuff at the home improvement stores. Compared to the Home Improvement store post foam this foam is a little lighter weight and not as hard but still seems to do the job and it is, or was, quite a bit cheaper than the store foam. I don’t know if I would recommend it for building a deck but a residential fence would be fine. Mixing is easy enough, I got a couple silicone measuring/mixing cups and a silicone stirring sticks so I could reuse them once the foam hardened.

## Frequently Bought Together

- 2 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.ae/products/423761959-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed](https://www.desertcart.ae/products/423761959-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed)

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*Product available on Desertcart United Arab Emirates*
*Store origin: AE*
*Last updated: 2026-06-21*