Learn how much attic insulation you need by climate zone. Find R-value requirements, insulation depth charts, and signs your attic is under-insulated.

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.

Sep 2, 2025 · Learn proper R-value for attic insulation by climate zone. Complete guide to requirements, materials, and costs for maximum energy savings.

Building a new home offers more opportunities for properly installing insulation. Doing so requires you to know the places that need insulation and their recommended R-values.

To reduce both heating and cooling costs, the US Department Of Energy (DOE) published attic insulation recommendations based on location in the US. Recommended R-values for the attic range …

Recommended levels of insulation This map shows thermal recommended levels of insulation for various climate zones, based on recommendations from the U.S. Department of Energy (DOE) and …

May 19, 2025 · Find your zone on the map and then use the above insulation R-value chart to determine the level of insulation you need to properly insulate your attic, walls, floors and crawlspaces.

Nov 17, 2023 · Attic insulation does a lot of good for your home. Benefits range from controlling air leakage, reducing energy costs, better air quality, creating useful space, better temperature control, …

Sep 12, 2025 · Learn the requirements for residential attics in different climate zones, the impact on energy efficiency, and the importance of proper insulation installation.

Use the JM insulation calculator to determine the recommended R-value for your project, as well as how much insulation you’ll need. Plus, reference the Department of Energy’s (DOE) map of …