The higher the R-Value the better the thermal performance of the insulation. The table below shows what levels of insulation are cost-effective for different climates and locations in the home.

To help you choose adequate insulation, we have summarized the R-values of 51 most common insulation materials (check the insulation R-value chart below).

May 19, 2025 · Learn all about insulation R-values and how they help keep your home cozy and save energy. Find everything you need to know with these insulation R-value charts.

May 29, 2025 · This R-value table gives standard R-values for 49 building materials, including insulation and roofing products. Calculate R-values using this chart.

improve your home’s energy efficiency with insulation R value chart and insulation thickness. Here are key insulation r values, R value per inch to determine what R value do you need for …

Oct 15, 2025 · Compare insulation R-values per inch for all materials. Get climate zone recommendations, installation tips, and energy savings calculations for your home insulation …

The table opposite suggests R-values by zone as indicated in the map of the United States. It also suggests R-values when adding insulation to uninsulated or under-insulated attics, crawl …