can this be cut with hot wire ?

Yes, but it is high density. It will not cut as easily as Styrofoam

Does this require moisture to cure?

This will not cure with moisture present.

whats the difference between 2#,4# & 6#? is the polyurethane hydrophobic or hydrophilic?

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

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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2lb Density Expanding Cast Foam, 2-Piece Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Sound Insulation, Filling Gaps and Insulation (1 Gallon Kit)

2lb Density Expanding Cast Foam, 2-Piece Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Sound Insulation, Filling Gaps and Insulation (1 Gallon Kit)

Product ID: 733261437

Details

Brand
Fiberglass
Manufacturer
Fiberglass
Material
Resin
Number of Packs
1
Recommended uses for product
Soundproofing

🕒5 min full expansion time

⚖️2lb density for optimal buoyancy

🛥️5 cubic feet coverage per kit

A$321

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Description

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

RAPID EXPANSION CURE - Expands fully in just 5 minutes, letting you finish projects faster without downtime.
PRECISION BUOYANCY BOOST - 2lb density closed-cell foam delivers reliable flotation and gap filling for marine and dock applications.
VERSATILE MULTI USE FORMULA - Soundproof, insulate, or add buoyancy — one kit covers all your non-structural needs.
CERTIFIED SAFETY DURABILITY - Meets US Coast Guard flotation standards with 95-98% closed cells for water resistance.
TEMPERATURE OPTIMIZED PERFORMANCE - Ideal working temps of 75-80°F ensure consistent expansion and maximum yield.

This 2lb density expanding polyurethane foam kit produces 5 cubic feet of closed-cell foam designed for flotation, soundproofing, and insulation. It cures quickly within 5 minutes, is water-resistant, and meets US Coast Guard safety standards, making it perfect for marine, dock, and gap-filling applications.

Specifications

ASIN	B08RP8DNDB
ASIN	B08RP8DNDB
Brand Name	Fiberglass Supply Depot
Coverage	5 cubic feet
Customer Reviews	4.6 4.6 out of 5 stars (284)
Customer reviews	4.6 4.6 out of 5 stars (284)
Date First Available	30 May 2025
Item model number	Poly2lbgk
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer	Fiberglass Supply Depot Inc.
Manufacturer Part Number	Poly2lbgk
Material Type	Resin
Model Number	Poly2lbgk
Number of Items	2
Number of Packs	1
Package Dimensions	26.19 x 23.9 x 16.79 cm; 4.85 kg
Recommended Uses For Product	Soundproofing, Thermal Insulation, Flotation, Void Filling
UPC	819794022859

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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

2 weeks ago

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A$321

Duties & taxes included

In stock

Sold byAmazon AustraliaDelivered 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 Australia.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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