Tech Specs

Full 4'x8' sheets of Coosa Board. Nautical 20 or Bluewater 26.

  • High-density, closed-cell, polyurethane foam reinforced with woven roving continuous strand fiberglass

  • Greater capacity and 40% to 60% lighter than marine plywood

  • Water absorption less than 1.5% by weight

  • Will not rot


The Bluewater composite panels are made from high-density closed-cell polyurethane foam reinforced with continuous strand fiberglass and woven roving. They’re quickly becoming an industry standard for lightweight building applications that previously called for the use of plywood.

The Bluewater series is ideal for projects in marine or high-humidity settings. While the Bluewater series is fantastic in aquatic environments, it’s also just as suitable for applications that require a high strength per cubic foot ratio with the added benefit of being lighter than plywood.


The Nautical product is Coosa’s lightest fiberglass reinforced composite panel and an excellent replacement for plywood and other wood core composite panels due to its high strength to low weight ratio.

Coosa Composites is the go-to choice for many Original Equipment Manufacturers (OEMs) and the recognized leader in the marine industry for several reasons.

Fast Delivery

Swift Solutions, Speedy Satisfaction

Competitive Pricing

Unbeatable Quality at Competitive Prices

Approved Quality

Excellence in Every Detail

24/7 Customer Service

Always Available, Always Attentive