Insulating a Basement

Insulating a home’s basement creates a stronger building envelope, contributing to reduced heating and cooling bills. In fact, an uninsulated basement can account for as much as 25 percent of a home's total heat loss and can lead to moisture problems and mold.

Consider using JM Formaldehyde-free™ Fiberglass Insulation in interior basement walls for thermal and sound control. For basement exterior walls, use Fiberglass Insulation or Continuous Insulation like AP™ Foil-Faced Polyiso Foam Sheathing depending on your project needs.

Remember to wear proper protective gear, including long sleeves, gloves and safety glasses when installing basement insulation. Be careful around exposed nails and exposed framing such as ceiling and floor joists.

Filter Products By
  • Project Type
  • Install Type

Recommended Products

= view sheets

Unfaced Batts & Rolls

JM Unfaced Formaldehyde-free™ fiberglass insulation offers R-values ranging from R-11 to R-38, as well as effective thermal and noise control.

Kraft-Faced Batts & Rolls

JM Kraft-faced Formaldehyde-free™ fiberglass insulation offers R-values ranging from R-11 to R-38, is ideal for moisture control in exterior walls and provides excellent temperature and noise control.

CI Max®

CI Max® is a high-efficiency sheathing designed for exposed interior applications. This product can be used in areas of your home where code allows it to be left with the facing exposed (e.g., unfinished basements).

TempControl® Mineral Wool

JM TempControl® Mineral Wool insulation is made from high-density, noncombustible fibers that helps delay the spread of fire in exterior walls, basements, and heated crawl spaces. It also delivers exceptional thermal performance for the life of your home to keep your family warm in the winter and cool in the summer while reducing your heating and cooling bills to save you money year- round.

Related How-To Guides

Install in Floors & Ceilings

This video will take you through the steps involved in effectively insulating your floors and ceilings .

Install Around Objects

This video will guide you through the process of placing insulation around recessed lighting and other areas where you’re likely to encounter obstacles like electrical wiring, plumbing and air ducts.