How many inches thick is R30 insulation?
Insulation values vary greatly based on the specific type of insulation and the manufacturer's specific recommendations. However, general average insulation values for a standard R-30 insulation product range from 1.5 to 2.0 inches. What is the difference in thickness between R38 and air-insulation? The thickness of air-insulation is typically 2 to 3 times that of ... Read more...