How do different rigid foam insulation types compare in terms of performance and applications?

Different rigid foam insulation types provide varying levels of thermal efficiency, moisture resistance, and mechanical strength. EPS foam boards are lightweight and cost-effective, making them suitable for general insulation applications. XPS foam boards offer a closed-cell structure that provides excellent water resistance and higher compressive strength, which is ideal for foundation insulation and under-slab installations. PIR foam boards provide superior thermal performance with higher R-values per inch, which is particularly beneficial in commercial roofing systems where insulation thickness must be minimized. When selecting among rigid foam insulation types, engineers and contractors usually evaluate environmental conditions, load requirements, and building code compliance.


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