4 lb High-Density Marine Pour Foam – Structural & Flotation

Fiberglass Florida’s 4 lb pour foam is a higher-density closed-cell polyurethane foam designed for demanding marine and industrial applications. Stronger than 2 lb foam, it provides excellent flotation and structural reinforcement while maintaining low water absorption.

Key Features:

• USCG Approved – Meets U.S. Coast Guard standards for flotation foam.
• High Strength – 4 lb/cu.ft. density offers greater compressive strength than 2 lb foam.
• Structural Applications – Perfect for boat decks, stringers, bulkheads, and high-load areas.
• Water Resistant – Closed-cell design prevents water penetration and maintains integrity in wet environments.
• Easy Mixing – Simple 1:1 by volume mix ratio ensures consistent curing.

Typical Uses:

• Marine flotation and reinforcement
• Structural filling for boats and watercraft
• Dock and piling reinforcement
• Industrial insulation and lightweight construction

When strength and durability matter, choose Fiberglass Florida’s 4 lb expanding pour foam. Trusted by marine professionals for reliable results every time.