What is the long-term durability and R-value stability of PET Foam?

PET foam exhibits outstanding long-term stability. Its closed-cell structure with atmospheric gas (air) diffusion provides stable thermal resistance without the long-term R-value drop associated with foams that use high-GWP blowing agents that diffuse out. It is resistant to rot, mold, and most chemicals. Independent aging studies indicate minimal property degradation over decades when properly installed and protected from mechanical damage and UV light.

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What is the long-term durability and R-value stability of PET Foam?

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