Hi-Bond Pour Foam Flotation Kit - Two-Part Urethane Closed Cell Foam, Available in Quart to 2 Gallon Kits

The Hi-Bond Pour Foam Flotation Kit is a two-part liquid urethane pour foam engineered for marine flotation and insulation applications. Mixed at a simple 1 to 1 ratio, the two liquid components combine and expand rapidly, filling hulls, cavities, pontoons, and voids before curing into a rigid, closed cell foam. Once cured, the foam adds buoyancy, resists water absorption, and is not affected by contact with gas or oil, making it a practical choice for bilge areas, transoms, and other spaces near fuel systems. The Hi-Bond kit line is available in a smaller quart-based kit for spot repairs and smaller flotation chambers, and a larger 2 gallon kit for bigger pours such as full pontoons or larger hull sections.

Specifications

• Brand: Hi-Bond
• Product Type: Two-part liquid urethane pour foam
• Density: 2 lb
• Mix Ratio: 1 to 1
• Material: Closed cell urethane foam
• Oil and Gas Resistance: Not affected by gas or oil
• Package Quantity: 1 kit

Sizes & Options

This pour foam kit is offered in two sizes to match the scale of your flotation or fill project. The Quart Kit (2 quarts total, expanding to approximately 2-1/2 cubic feet) suits smaller repairs, localized flotation chambers, or test pours. The 2 Gallon Kit delivers a much larger volume of expanding foam for bigger hull sections, pontoons, or multi-chamber flotation jobs, reducing the need to mix multiple smaller kits. Choose the size that matches your total void volume, allowing extra material for expansion loss and uneven cavity shapes.