During new construction, batt insulation—thick strips of spun fiberglass or ... insulation differ between attics and walls. Attics (R-30 to R-60) often need greater thermal resistance than ...
Insulation is measured by its thermal resistance, or R-value, which measures the material's type, thickness ... walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and ...
Insulation is measured by its thermal resistance, or R-value, which measures the material's type, thickness, and density. Simply put, the higher the R-value, the better the climate control.