Closed Cell Foam When it comes to insulation, cushioning, and sealing, closed cell foam has proven to be one of the most versatile materials available today. Its unique structure, impressive durability, and wide range of applications make it an indispensable choice across industries such as construction, automotive, packaging, and marine. But what exactly is closed cell foam, and why is it preferred over other foam types? Let’s dive deeper into its composition, benefits, and