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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Fiberglass Supply Depot 2 Pounds Stretch Casting Foam, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation and Dock, Soundproofing, Void Filling

Fiberglass Supply Depot 2 Pounds Stretch Casting Foam, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation and Dock, Soundproofing, Void Filling

Product ID: 423761959

Details

Brand
Fiberglass
Manufacturer
Fiberglass
Material
Resin
Number of Packs
2
Recommended uses for product
Soundproofing

📏5 cubic feet coverage

🕒5 min full expansion

⚖️2 lbs lightweight density

Description

🚀 Elevate your projects with foam that fills, floats, and fortifies!

PRECISION 2 PART MIX - Exact 1:1 ratio for flawless foam activation every time
VERSATILE APPLICATION - Perfect for flotation, soundproofing, insulation, and void filling
RAPID EXPANSION CURE - Fully expands in 5 minutes to save you time on projects
RESIN COMPATIBLE FINISH - Cures to a surface ready for polyester, epoxy, or vinyl ester laminates
TEMPERATURE OPTIMIZED PERFORMANCE - Ideal working temp 75-80°F ensures max expansion and strength

Fiberglass Supply Depot’s 2-pound 2-part closed cell polyurethane foam delivers 5 cubic feet of lightweight, rapidly expanding foam designed for boat flotation, soundproofing, thermal insulation, and void filling. Its precise 1:1 mix ratio and compatibility with common resins make it a versatile, professional-grade solution optimized for use at 75-80°F.

Specifications

ASIN	B08RP8DNDB
Best Sellers Rank	165,404 in DIY & Tools ( See Top 100 in DIY & Tools ) 191 in Expanding Foams
Brand	Fiberglass Supply Depot
Coverage	5 cubic feet
Customer Reviews	4.6 4.6 out of 5 stars (290)
Manufacturer	Fiberglass Supply Depot Inc.
Material	Resin
Model Number	Poly2lbgk
Number of Items	2
Number of Packs	2
Part Number	Poly2lbgk
Recommended Uses For Product	Soundproofing, Thermal Insulation, Flotation, Void Filling
UPC	819794022859

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