Rigid Foam Insulation R-Value Chart: Thickness Guide by Material Type
When selecting rigid foam insulation for your building project, understanding R-values across different material types and thicknesses is critical for achieving optimal thermal performance. This comprehensive guide breaks down the R-values for the three primary rigid foam insulation types - expanded polystyrene (EPS), extruded polystyrene (XPS), and polyisocyanurate (polyiso) - helping you make informed decisions [...]




