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TRUSTED BY FOND DU LAC, WI HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon20
    Verified insulation services reviews

Top-Rated Insulation pros in Fond Du Lac - Updated Nov 2026

Avatar for Barts Insulation Solutions
Barts Insulation Solutions
4.8(
62
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"I still have vacuum lines in my carpet from where they cleaned up after themselves! In addition to responsive customer service, competitive prices, and a polite, clean work crew; CM Advance Insullation was easy to work with and did a fantastic job. I was invited to inspect the work and could easily see that the job had been done well."
Projects
Projects
Projects
Projects
Projects

+48

Response time2 days
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Advanced Pro Insulators
Advanced Pro Insulators
4.9(
15
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"Tyler was the first to respond to an Angi List search, came the next day, and told me that my attic insulation, while not perfect, wasn't in need of adding more. I appreciated his honesty, even at the cost of losing a contract. I recommend this company based on honesty."
Spray Foam Box Sills
Spray Foam Box Sills
Fiberglass Insulation Installed
Fiberglass Falling Out of Box Sills
Spray Foam Box Sills

+1

Response time1 day
15 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for USA Insulation Green Bay - Fox Valley
USA Insulation Green Bay - Fox Valley
5.0(
9
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"They had a great group of people to work with, The crew was there at the appointment time. Nick and his team worked together well to get the job done, including adding insulation to the attic, adding foam to all exterior walls, and insulating in the basement. This was all done in 1 day and they cleaned up after themselves. I would highly recommend them."
USA Insulation Work!
USA Insulation Work!
USA Insulation Work!
USA Insulation Work!
USA Insulation Work!

+9

Response time1 day
Response rate88%
46 neighbors recently requested a quote
Avatar for Elite Insulators
Elite Insulators
4.8(
21
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Kyle wen above and beyond my expectations! Very professional and knowledgeable! Every business should have someone like Kyle. I would highly recommend Elite Insulators. I have other projects coming up and he is already hired! Lol! THANK YOU Kyle!!"
Cathedral Ceilings
Ceiling/Wall
Walls
Amish Ice Box
Amish Ice Box

+56

Response time2 days
Recommended by57%of homeowners
Avatar for Koala Insulation of The Fox Valley
Koala Insulation of The Fox Valley
5.0(
2
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"Travis, Logan and Jaxon were very professional in their work and cleaned up after. Great group of men to work with and I highly recommend Koala. Also had a room fan installed. None other of the estimates I had offered a fan. Another feature Koala offered and installed was an insulated zipped hatch cover over the entrance cover into the attic to completely seal any air leakage. Highly recommend Koala"
Response time1 day
Response rate99%
6 neighbors recently requested a quote
RetroFoam of Wisconsin Inc.
New to Angi
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Fond Du Lac, WI and surrounding areas

Approved (Corporate)

Free estimates

Credit card accepted

Offers commercial services

RetroFoam of Wisconsin specializes in RetroFoam injection foam insulation for existing walls, helping homeowners improve comfort and energy efficiency without the mess or disruption of a full remodel. Our insulation solution is designed to reduce drafts, help maintain consistent indoor temperatures, and make homes more comfortable year-round. We serve homeowners across the state. Whether you live in a historic home or a newer build, our team provides a proven insulation solution tailored to your needs.

79 neighbors recently requested a quote
Showing 1-10 of 32
Insulation FAQs, answered by experts

For standard 2x4 walls, the ideal insulation has an R-value between R-13 and R-15. This level of insulation, typically around 3.5 inches thick, fits well within the wall cavity. Common options include fiberglass batts and spray foam. The best choice for your home can depend on your climate; use R-value maps, like those from Energy Star, to determine the recommended level for your region. For colder climates, you might also consider adding exterior insulation for greater efficiency. Always check with your local building codes to ensure you meet any required standards.

The lifespan of crawl space insulation depends on how well you maintain your insulation and the type of insulation. Fiberglass will need replacing every 15 to 20 years on average if you don't have a vapor barrier in place. If you do have vapor barriers in place, then your insulation could last much longer. Spray foam insulation can last anywhere from 80 to 100 years. 

Air sealing isn't necessary for attic insulation, but it's incredibly helpful since it can help you identify and patch any existing air leaks. Failing to find these leaks before adding insulation can render your insulation less effective, leading to higher energy bills and potentially costly repairs down the line.

Adding insulation to ceilings is an excellent way to increase the energy efficiency of your home. If your home's layout is such that you need insulation in the ceilings rather than in the roof, it's likely that at least some insulation already exists in the space. However, each additional inch of insulation you can add boosts the R-value by between 2.2 and 4.2.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

The Fond Du Lac, WI homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.