Cellular polymer materials are permeable to some degree, while other manufacturing materials like metals, glass, ceramics and dense loaded vinyls are not. To some, this porous quality may seem like a disadvantage. But that’s not true! Whether or not a material is right for your project comes down to your application.
Porous plastic foam is on the cutting edge of insulation for heat, vapor, noise, and other elements. The two major variants of porous plastic foams are open and closed cell foams. Both types of foam are used in everyday products, but because of their structural differences, one type of foam may perform better than the other depending on the desired application.