How do rigid foam insulation types differ in performance and application?

Different rigid foam insulation types vary in density, thermal performance, and moisture resistance. EPS foam board is lightweight and cost-effective, making it suitable for wall insulation and packaging applications. XPS foam board has a closed-cell structure that provides superior moisture resistance and compressive strength, making it ideal for foundations and under-slab insulation. PIR foam board offers exceptional thermal performance and is commonly used in roofing systems and commercial buildings.


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