---
product_id: 265890390
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: "C$14795"
currency: NIO
in_stock: true
category: "Fiberglass Supply Depot"
url: https://www.desertcart.ni/products/265890390-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed
store_origin: NI
region: Nicaragua
---

# 5 cubic feet coverage per kit 5 min full expansion time 2 lb density for superior 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:** C$14795
**Availability:** ✅ In Stock

## Summary

> 🛠️ Float, fill, and fortify—foam that works as hard as you do!

## 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?** C$14795 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/265890390-2-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

- • **Precision Mixing:** Equal parts Part A & B with a 45-second working window ensures consistent, reliable results every time.
- • **Buoyant & Lightweight:** 2 lb density closed-cell foam delivers unmatched flotation without added weight.
- • **Versatile Application:** Perfect for soundproofing, insulation, void filling, and boat/dock flotation—one kit, endless solutions.
- • **Rapid Expansion & Cure:** Expands fully in just 5 minutes, letting you finish projects faster and smarter.
- • **Resin-Compatible Finish:** Can be laminated with polyester, epoxy, or vinyl ester resins without melting—ideal for professional-grade composites.

## Overview

Fiberglass Supply Depot’s 2 lb density expanding pour foam is a 2-part polyurethane closed-cell liquid foam kit that produces 5 cubic feet of buoyant, soundproof, and insulating foam. Designed for nonstructural void filling, it cures quickly within 5 minutes and is compatible with various resins, making it a versatile choice for boat flotation, dock support, and professional-grade insulation projects.

## Description

Fiberglass Supply Depot 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): desertcart.com: Industrial & Scientific

## 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.
- 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 | #28,396 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #59 in Urethane Adhesives |
| Brand Name | Fiberglass Supply Depot |
| Coverage | 5 cubic feet |
| Customer Reviews | 4.6 4.6 out of 5 stars (296) |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Manufacturer Part Number | Poly2lbgk |
| Material Type | Foam |
| Model Number | Poly2lbgk |
| Number of Items | 2 |
| Number of Packs | 1 |
| Recommended Uses For Product | Soundproofing, Insulation, Flotation, Void Filling |
| UPC | 819794022859 |
| Unit Count | 128 Fluid Ounces |

## Product Details

- **Brand:** Fiberglass Supply Depot
- **Manufacturer:** Fiberglass Supply Depot Inc.
- **Material:** Foam
- **Number of Packs:** 1
- **Recommended Uses For Product:** Soundproofing, Insulation, Flotation, Void Filling

## 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)

## 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

## 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.ni/products/265890390-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed](https://www.desertcart.ni/products/265890390-2-lb-density-expanding-pour-foam-2-part-polyurethane-closed)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-09-26*