Floor Insulation

floor insulation

When talking about insulating a home, most people think about attics and walls. But insulating the floors over the basement or an unconditioned crawlspace can improve your home's comfort and improve energy efficiency. Sealing up the gaps and spaces where air can infiltrate into the main floor living areas can also prevent moisture and mold from building up.

High-Performance Floor Insulation Improves Comfort & More

If your home feels cold and drafty, deficient floor insulation is one place to look. Wisconsin Home Improvement's home performance audit will help identify overlooked and under-insulated areas in your home, from top to bottom, including floor areas that separate conditioned spaces from those that are not heated or cooled.

Underfloor insulation can improve the cozy feeling of rooms that might feel drafty or damp. By placing a radiant barrier between the main level and basement or crawlspace level, our certified and trained team also can keep moisture and mold from seeping up into main living areas.

Here are just a few of the benefits you can expect when you have well insulated floors:

  • Warmer floors in your living spaces

  • An overall cozier feeling home

  • Increased home energy efficiency

  • Greater utility bill savings

How Much is Enough Floor Insulation?

Most floors can hold quite a bit of insulation between supporting joists. Insulation board is one option for adding insulation to floor areas. For new construction, R-49 is required to meet energy efficiency codes, but most retrofit options will add the equivalent insulation of R-19 to maximize comfort.

What Kind of Insulation Is Best?

Wisconsin Home Improvement has several options to recommend for floor insulation. Dow Thermax™ rigid foam insulating panels, which have an aluminum foil facing on both sides and are available in different thicknesses and R-values, is one great choice. Owens Corning fiberglass batts, which can be fitted between joists, are another excellent option. If the underfloor floor area is adjacent to a crawlspace, an Icynene spray foam insulation application provides both added comfort and a barrier for moisture.

Where in the Floor Will I Need to Insulate?

Insulation should be applied to floor areas that are adjacent to heated areas. Most times, insulation is placed between floor joists, around any ductwork and air returns, plumbing, wiring and other components that are attached to the floor structure. In places where the floor connects with the foundation walls, we typically use fiberglass batts or spray foam Icynene insulation.

Improve Floor Insulation with Wisconsin Home Improvement

It’s not always easy to tell when your floors are under-insulated. During a home performance audit, Wisconsin Home Improvement will determine how well insulated the floors in your home are. If upgrading your floor insulation is necessary, our Pearl certified experts will install new insulation using high-performance materials like fiberglass batts or spray foam.


If you're considering adding insulation to your floors to increase comfort or eliminate moisture problems, Wisconsin Home improvement can help! Contact our experienced insulation team to learn more!

Boost home comfort with high-performance floor insulation.

Get in touch with our team now!


Schedule Service

Get Started
  • Teresa

    I am so grateful for everyone at Wisconsin Home Improvement. I will always recommend you to anyone looking to have insulation services.

  • Jenny P.

    I just wanted to extend a thank you to you and all of your employees who have spent time at our home fixing our attic issues.

  • James V.

    Dear Steve, 

    We at Grace are so pleased with the quality of work and the professionalism of the crew that did the insulation. Mike and Igor were so respectful of the building and its contents, and so nice to everyone in the congregation who was working at church. 

    James V., Milwaukee, WI
  • Cindy S.

    I really feel compelled to give a "shout out" to everyone I have come into contact with at WHI. First off - Jody. You are so friendly and helpful on the phone, forgiving me for my inability to "on-line sign", switching up of dates, declining work and then changing my mind.

    Cindy S., Whitefish Bay, WI
  • Tim S.

    Steve, just a side note and I would not send this if it was not completely true - Mike and Pete were both fantastic. I was impressed. We had just had other major construction and have many comparatives for the work WHI did. I would come home and never know they had even been there.

  • Mike & Erin M.

    We wanted to provide feedback on our experience with Peter, who did our home energy audit.  We felt he went above and beyond what was expected of him.  He was very thorough and was genuinely concerned about any issues causing inefficiencies in our home.  He explained things in terms we... Read More

  • I wanted to thank you and your team again for the
    great work you did and insulating our home. It is only been a week, and the
    difference is amazing. Every room in this house feel substantially warmer.

  • Your employees were prompt, courteous and friendly.

    Lois W., Menomonee Falls, WI
  • Thursday and Friday of last week one of your crews were at my home putting in some additional insulation and doing some other work. I just wanted to tell you that my wife and I were very impressed with the professionalism of your men.

    John & Jennifer P., WI
  • Please thank your crew for the great job they did here. They were all very personable, worked very hard, and they took the time to explain what they were doing.

    Barbara F., Belgium, WI
  • Jan and I were amazed and impressed by the crew’s positive work ethic coupled with their gracious and friendly manner. Obviously they knew what they were doing and set to task with quickness and absolute thoroughness… you have our deepest appreciation.

    JoAnne and Jan V., Greendale, WI
  • The work your team did is fantastic! Also I would like to compliment your crew on their professional approach to our house and their work.

    Ryan, WI
  • Steve and Frank are very good representations of your firm -- very professional. Thanks!

    Jim Young, WI
  • We were pleased with work done by Mike and Kevin. They deserve a pat on the back. Thanks!

    Eugene Hefter, WI
  • I just wanted to take a minute to thank you and your Madison crew for the great work they are doing. Over the last few months I have worked closely with Dann, Roger, Marc and Jeremy and am extremely impressed with their attitudes and the quality of their work.

    Brandon Langeteig, Project Home, Inc.
Save up to 73% off insulation, air sealing & ventilation packages while incentives are still available!