Closed-cell foam

Closed-cell foam is a type of insulation material composed of tiny, tightly packed cells that are completely enclosed, trapping air within each cell. This structure makes it highly effective for insulation because it provides excellent thermal resistance, moisture resistance, and structural strength. Unlike open-cell foam, which has interconnected cells and feels soft, closed-cell foam is denser, rigid, and resistant to water penetration. It is commonly used in building insulation, roofing, and outdoor applications to improve energy efficiency and prevent moisture issues, offering durable and reliable thermal protection.