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 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)

Fiberglass Supply Depot 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)

Product ID: 273973809

Details

Brand
Fiberglass
Manufacturer
Fiberglass
Material
Foam Resin
Number of Packs
1
Recommended Uses For Product
Flotation

📏2 cubic feet coverage per kit

⏱️5 min full expansion time

🛥️4 lb density for superior flotation

€ 188.10

Duties & taxes included

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Elevate your projects with foam that floats, fills, and finishes like a pro!

SPEEDY SETUP - Expands fully in just 5 minutes, letting you move fast and stay efficient on every project.
PRECISION PERFECT - Exact 1:1 mixing ratio with a 45-second working window ensures flawless application every time.
TEMPERATURE SAVVY - Optimized for 75°-80°F to maximize expansion and minimize waste—work smarter, not harder.
VERSATILE MASTERY - Seamlessly laminates with polyester, epoxy, or vinyl ester resins—ideal for soundproofing, insulation, and sculpting.
FLOAT ABOVE THE REST - 4 lb density closed-cell foam delivers unmatched buoyancy for boats, docks, and more.

Fiberglass Supply Depot’s 4 lb density expanding pour foam is a 2-part polyurethane closed-cell liquid foam kit that produces 2 cubic feet of high-performance foam. Designed for flotation, soundproofing, insulation, and filling voids, it cures quickly and bonds with common resins without melting. Perfect for professionals seeking reliable, versatile, and efficient foam solutions.

Specifications

ASIN	B08T2195F8
Best Sellers Rank	#36,144 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #68 in Urethane Adhesives
Brand Name	Fiberglass Supply Depot
Coverage	2 cubic feet
Customer Reviews	4.5 4.5 out of 5 stars (260)
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer Part Number	FBAPOLY4LBGK
Material Type	Foam,Resin
Recommended Uses For Product	Flotation, Soundproofing, Insulation, Filling Voids, Sculpting, Casting
UPC	819794022934
Unit Count	192 Fluid Ounces

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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