could this me used for settng fence posts?

This foam is very strong & it will bond doesn't soak in ground I would not be afraid to use as a fence post filler.

Will this skin inside a mold? Self skinning without direct air or moisture exposure for casting.

No this will not set up without air

What is the shelf life of this product?

Approximately 6 months from the manufacture date.

Will this work for archery targets?

Yes this foam will expand to fill in shot out areas on a foam target you can sand flush once it hardens let it set up for about an hour

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6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

Product ID: 684403191

Details

Brand
Fiberglass
Item form
Liquid Solid
Material
Resin
Special feature
Soundproofing
Specific uses for product
Boats Dock

⚡Expands 4x volume rapidly

🔇Closed-cell foam for soundproofing

🛥️6 lb density for max buoyancy

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$337.28

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Description

🛠️ Expand your projects, not your worries!

ROCK SOLID BUOYANCY - 6 lb density ensures unmatched flotation and durability for marine and dock applications.
RAPID EXPANSION POWER - Expands up to 4 times its liquid volume in under 60 seconds—get the job done fast, no waiting.
DIY PROVEN RELIABILITY - Trusted by pros and hobbyists alike for carving, mold-making, and structural reinforcement.
PRECISION VOID FILLING - Aggressively adheres and fills gaps, cracks, and cavities with a tough, long-lasting seal.
VERSATILE SOUNDPROOFING INSULATION - Closed-cell polyurethane blocks noise and seals thermal leaks for a quieter, energy-efficient space.

This 1-gallon 2-part polyurethane foam kit delivers a dense 6 lb closed-cell foam that rapidly expands 4x its liquid volume, providing superior buoyancy, soundproofing, insulation, and void filling. Ideal for boats, docks, and DIY projects requiring durable, moisture-resistant sealing and structural support.

Specifications

ASIN	B0BBH4XQ9P
Best Sellers Rank	364,493 in DIY & Tools ( See Top 100 in DIY & Tools ) 325 in Expanding Foams
Brand	Fiberglass Supply Depot
Colour	Clear
Compatible Material	Polyester, Epoxy, Vinyl Ester Resin, Wood, Metal, Plastic, Ceramic, Glass, Rubber, Stone, Fiberglass, Faux Leather, Fabric, Paper, Cardboard, Gemstone
Container Type	Gallon
Customer Reviews	4.4 4.4 out of 5 stars (183)
Full Cure Time	5 Minutes
Global Trade Identification Number	00819794023221
Item Form	Liquid, Solid
Item Package Quantity	1
Item Volume	128 Fluid Ounces
Item Weight	6 Pounds
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer Part Number	FBACPOLY6LBGK
Material	Resin
Model Number	FBACPOLY6LBGK
Number of Pieces	2
Other Special Features of the Product	Soundproofing, Insulation, Buoyancy
Specific Uses For Product	Boats, Dock Flotation, Soundproofing, Filling Voids, Insulation
Unit Count	1.0 count
Viscosity Level	Low
Water Resistance Level	Not Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$337.28

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In stock

Sold byAmazon USADelivered 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 USA.

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