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Find Insulation pros in Fond Du Lac

Avatar for Barts Insulation Solutions
Barts Insulation Solutions
4.8(
62
)

Serving Fond Du Lac, WI and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"I chose Barts Insulation Solutions to add blown insulation to our attic after Josh?s prompt and reasonable estimate. The work was done cheerfully, professionally, and efficiently. I would recommend Barts without hesitation."
Projects
Projects
Projects
Projects
Projects

+48

Response time2 days
14 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Advanced Pro Insulators
Advanced Pro Insulators
4.9(
15
)

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
9 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
)

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 rate87%
32 neighbors recently requested a quote
Avatar for Elite Insulators
Elite Insulators
4.8(
21
)

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(
78
)

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 rate88%
22 neighbors recently requested a quote
Avatar for Koala Insulation of The Fox Valley
Koala Insulation of The Fox Valley
5.0(
2
)

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 rate96%
15 neighbors recently requested a quote
RetroFoam of Wisconsin Inc.
New to Angi

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.

11 neighbors recently requested a quote
Showing 1-10 of 34

FAQs for insulation service projects in Fond Du Lac, WI

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

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.

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