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

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

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الحساب عربة التسوق

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

المساعدة تتبع الطلب

الحساب عربة التسوق

2 lbs Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (3.8L Kit)

Product ID: 733261437

Details

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

🕒45 sec working time, 5 min full expansion

⚖️2lb density for optimal buoyancy

🛥️5 cubic feet coverage per 1-gallon kit

SAR 832

Duties & taxes included

In stock

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Description

🛠️ Float, Fill, and Fortify—Foam That Works as Hard as You Do!

MARINE GRADE DURABILITY - Complies with US Coast Guard safety standards and bonds with polyester, epoxy, or vinyl ester resins without melting.
RAPID EXPANSION FORMULA - Mix equal parts and watch it expand fully in just 5 minutes—perfect for fast, efficient projects.
PRECISION BUOYANCY BOOST - 2lb density closed-cell foam delivers reliable flotation and gap filling for marine and dock applications.
TEMPERATURE OPTIMIZED PERFORMANCE - Ideal working temperature of 75-80°F ensures maximum expansion and consistent results every time.
VERSATILE INSULATION SOUNDPROOFING - Seamlessly insulates and soundproofs while resisting water absorption with 95-98% closed cells.

This 2lb density expanding polyurethane foam kit delivers 5 cubic feet of closed-cell buoyant foam designed for non-structural filling, soundproofing, and insulation. With a quick 45-second working time and full expansion in 5 minutes, it’s engineered for marine and dock flotation applications, meeting US Coast Guard safety standards and resisting water absorption for long-lasting performance.

Specifications

ASIN	B08RP8DNDB
ASIN	B08RP8DNDB
Brand Name	Fiberglass Supply Depot
Coverage	5 cubic feet
Customer Reviews	4.6 4.6 out of 5 stars (285)
Customer reviews	4.6 4.6 out of 5 stars (285)
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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