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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
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
14 neighbors recently requested a quote
Recommended by83%of homeowners
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 Premier North Insulation
Premier North Insulation
3.8(
79
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2011

Free estimates

Customers say: Quick response

"Premier North Insulation did an excellent jobs from start to finish. David and his crew did great work and were friendly to work with. Immediately following the project we already felt a difference in the home. ( work was done in July) We are looking forward to the difference this winter. I want to note David was the only person during the quoting phase who crawled around in our attic as opposed to simply standing on the ladder shining a flashlight. This showed me trust in the service we would be receiving. I wouldn't hesitate to work with Premier North Insulation again."
Response time2 days
Response rate89%
73 neighbors recently requested a quote
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.

75 neighbors recently requested a quote
Avatar for Patriot Spray Foam L.L.C.
Patriot Spray Foam L.L.C.
New to Angi
Spray Foam Insulation - Install

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction! \n

Response time10 hrs
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Insulation FAQs, answered by experts

You’ve likely heard the saying “heat rises”—well, it’s true! This is why it is critical to properly insulate your attic and protect yourself from chilly winter nights. During summer, your attic insulation will also protect against excessive heat gain radiating through the ceiling into the rest of your home below.

The R-value is a rating that measures an insulation's thermal resistance—in other words, how well it insulates. A higher R-value provides more protection for your pipes, and all pipe insulation materials should have an R-value listed on the product description or label. Each insulation type has its own R-value, which typically falls between one and five for most pipe insulation. When making a selection, Energy.gov recommends choosing a pipe wrap that is at least one inch thick, and the International Code Council (ICC) suggests choosing a material with an R-value of at least 3.

It’s best not to install a radiant barrier directly under insulation because it requires an air gap on at least one side to work properly. Instead, you should install the radiant barrier over your existing insulation to create an air space to reflect the radiant heat.

A vapor barrier can last over 20 years, but they are vulnerable to pests, flooding, and other natural disasters. If your home weathers a storm or is treated for any pest infestation, make sure to have a drywall pro come check the integrity of your vapor barrier. It’s also important to have a pro install a vapor barrier since improper installation can lead to tears or leaks in the barrier that shorten its lifespan.

When temperatures are too cold, it can keep ice from melting, and products like ice melt and rock salt are ineffective. Water turns to ice in temperatures below 32 degrees Fahrenheit. Ice melts on its own when temperatures reach above 32 degrees Fahrenheit. 

Ice melt loses effectiveness in temperatures below -25 degrees Fahrenheit, and rock salt works in temperatures 5 degrees Fahrenheit and warmer.

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.