The description says that it can be used as insulation. Do you have a recommended sprayer vendor and/or setup?

think it would be hard to spray..pour it in cavities surrounding a fuel tank .. its water prove and floatation,

For the 2 gallon 4 lbs. density kit, how many pounds of flotation would it nominally provide?

Buoyancy of 2lb foam is 60lbs of flotation per cubic feet. Buoyancy of 4lb foam is 30lbs of flotation per cubic feet. Remember this is an approximate number.

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

the weight rating numbers are for how much the foam expands and how much weight it can support. 2lb foam will expand around 30 times its liquid amount and 4lb expands around 15 times its liquid amount and 6lb expands 10 times its liquid amount. for my boat i used 4lb it worked great.

I am restoring old plaster life-size statues for a museum. Could I use your foam product to cast hands in an alginate mold?

The mold would have to be rigid because as the foam expands it could deform your shape if it wasn't. Also this stuff sticks to everything so make sure you will be able to get it out of your mold.

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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 (2 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 (2 Gallon Kit)

Product ID: 282511397

Details

Brand
Fiberglass
Manufacturer
Fiberglass
Material
Foam Resin
Number of Packs
2
Recommended Uses For Product
Flotation

⏳45 sec working time, 5 min full expansion

🧊Closed-cell foam for premium insulation

🛥️4 lb density for superior flotation

€ 422.78

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Expand Your Possibilities with Every Pour!

SEAL SOUNDPROOF - Closed-cell structure locks out moisture and noise for a quieter, drier space.
FLOAT ABOVE THE REST - 4 lb density foam delivers unmatched buoyancy for boats and docks.
SPEED MEETS PRECISION - Quick 45-second working window ensures efficient, mess-controlled application.
VERSATILE CRAFTING POWER - Perfect for sculpting, casting, filling voids, and even taxidermy projects.
TEMPERATURE SAVVY EXPANSION - Optimized for 75-80°F to maximize expansion and minimize waste.

Fiberglass Supply Depot’s 4 lb density, 2-part polyurethane expanding foam kit offers 4 cubic feet of closed-cell foam designed for flotation, soundproofing, insulation, and filling voids. With a rapid 45-second working time and full expansion in 5 minutes, it’s engineered for precision and versatility in marine, craft, and construction applications. Temperature-sensitive expansion ensures optimal performance between 75-80°F, making it a must-have for professionals seeking reliable, high-performance foam solutions.

Specifications

ASIN	B08V5BV9V9
Best Sellers Rank	#79,073 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #315 in Sewing Pillow Forms & Foam #444 in Craft Foam
Brand Name	Fiberglass Supply Depot
Coverage	4 cubic feet
Customer Reviews	4.6 4.6 out of 5 stars (496)
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer Part Number	poly4lb2gk
Material Type	Foam,Resin
Model Number	819794022927
Number of Items	2
Number of Packs	2
Recommended Uses For Product	Flotation, Soundproofing, Insulation, Filling Voids, Sculpting, Casting
UPC	819794022927
Unit Count	1 Count

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