What is the compressive strength of the foam, in PCF?

They only give the compressive strength in PSI and that is 78 for the 4lb foam

What is the viscosity of the liquids before they mix?

The best way to describe it would be like warm pancake syrup.

i'm new at this..what does density mean i see 2lb..4lb..6lb? thanks

Think of it as hardness or strength. The 2lb will be more sponge like 6 will be harder.

Can you use pole foam to insulate the walls of a shop? Does it go thru a heat? Will it blister the tyvek or metal on the outside?

It doesn't fill a very big volume like spray foam. It is very liquid and comes out of any cracks. Will set up hard as a rock though.

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Fiberglass Supply Depot 4 Pounds. Density Expansion Foam, 2-Part PU Closed Cell Liquid Foam for Boat Flotation and Dock, Acoustic Insulation, Vaz Fill

Fiberglass Supply Depot 4 Pounds. Density Expansion Foam, 2-Part PU Closed Cell Liquid Foam for Boat Flotation and Dock, Acoustic Insulation, Vaz Fill

Product ID: 680856745

Details

Brand
Fiberglass
Manufacturer
Fiberglass
Material
Foam Resin
Recommended uses for product
Flotation
UPC
819794022934

🌊2 cubic feet coverage for versatile flotation

🕒45 sec working time, 5 min full expansion

⚖️4 lbs density for robust support

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Description

🌟 Float Above the Rest with Next-Level Foam Innovation!

PREMIUM 4 LB DENSITY - Engineered for superior buoyancy and load-bearing support beyond standard foams.
MULTI USE VERSATILITY - Perfect for flotation, soundproofing, insulation, sculpting, and casting—one foam, endless possibilities.
RAPID EXPANSION FORMULA - Activate and apply within 45 seconds, fully expands in just 5 minutes to save your valuable time.
RESIN COMPATIBLE FINISH - Seamlessly laminates with polyester, epoxy, or vinyl ester resins without melting or damage.
TEMPERATURE OPTIMIZED PERFORMANCE - Ideal working conditions at 75°-80°F ensure maximum expansion and flawless results every time.

Fiberglass Supply Depot’s 4LB Density Expansion Foam is a high-performance 2-part polyurethane closed-cell foam delivering 2 cubic feet of durable, buoyant, and insulating material. Designed for professional-grade flotation, soundproofing, and structural filling, it cures quickly and bonds flawlessly with common resins, making it the go-to choice for millennial managers seeking reliable, multi-functional solutions that elevate projects and impress peers.

Specifications

ASIN	B08T2195F8
Brand	Fiberglass Supply Depot
Brand Name	Fiberglass Supply Depot
Coverage	2 cubic feet
Customer Reviews	4.4 out of 5 stars 248 Reviews
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer Part Number	FBAPOLY4LBGK
Material	Foam , Resin
Material Type	Foam, Resin
Number of Items	1
Recommended Uses For Product	Flotation, Soundproofing, Insulation, Filling Voids, Sculpting, Casting
Recommended uses for product	Flotation, Soundproofing, Insulation, Filling Voids, Sculpting, Casting
UPC	819794022934
Unit Count	192 Milliliters

Reviews

L**E

Great product!!!!

18.10.2025

R**H

Good product.

8.03.2025

V**M

Crazy foam

6.05.2026

A**H

great product

28.07.2025

J**Y

Reacts fast

2.05.2026

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54569 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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