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Top-Rated Insulation pros in Belgium - Updated Nov 2026

Avatar for INSULATION SPECIALISTS INC
INSULATION SPECIALISTS INC
4.9(
11
)
Insulation - Install or Upgrade

Serving Belgium, WI and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"I requested an estimate for blowing insulation into my attic. Jim came out once to do an assessment, and offered a reasonable estimate. We scheduled installation. He returned on my request after I removed the existing insulation to reassess the attic. It was determined that there was already insulation blown under the floor, and Jim stated that he would not recommend any further work. Jim did not charge me for the multiple visits for assessments, and was very gracious about the necessity of canceling. I would recommend his services without reservation."
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+6

Response time11 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Advanced Pro Insulators
Advanced Pro Insulators
4.9(
15
)

Serving Belgium, 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 De Andas Insulation
De Andas Insulation
5.0(
19
)

Serving Belgium, WI and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"Oscar was extremely responsive, professional and was able to complete the job in a timely manner. He was open and honest about the product he used. He removed the old rolled fiberglass insulation for us as well. I would recommend DeAndas to anyone looking to have spray foam insulation installed!!"
Garage Walls
Garage Ceiling
Basement furred walls
Residential Basement
Residential Basement

+1

Response time7 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for Cozy Walls Foam Insulation
Cozy Walls Foam Insulation
5.0(
5
)

Serving Belgium, WI and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

Real measurements. Thermal imaging. The owner at your door. Zero pressure.\nTell us about your house and Erik will call you back to set a time. The estimate is free everywhere we work, and it comes with proof — not a guess over the phone.

External Injection
External Injection
External Injection
External Injection
Re-caulking after the siding is put back on

+7

19 neighbors recently requested a quote
Avatar for Hawx Insulation- Milwaukee
Hawx Insulation- Milwaukee
4.1(
361
)

Serving Belgium, WI and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

At Hawx Pest Control, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. Hawx Premium Pest Control will treat your pests, mosquitos, and more- then keep them away for good. If pests come back between treatments so will we, at no additional cost to you. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. \n

8 neighbors recently requested a quote
Recommended by75%of homeowners
RetroFoam of Wisconsin Inc.
New to Angi

Serving Belgium, 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.

70 neighbors recently requested a quote
Avatar for Patriot Spray Foam L.L.C.
Patriot Spray Foam L.L.C.
New to Angi

Serving Belgium, 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
Avatar for Intec
Intec
4.5(
145
)
Insulation - Install or Upgrade

Serving Belgium, WI and surrounding areas

In business since 1985

Free estimates

Warranties offered

"The gentleman who came and did the energy audit was really outstanding. I have only lived here for a year and half and I have a gas fire place has leaked cold air like there is an open window and my builder has just been refusing to fix. Finally after a second winter of no fireplace I decided to have to repaired. I wanted to have an energy audit done before and then I would decide maybe to sue the builder. When Angelo came from Intec and I told him the story, he said that before the audit, he would tell me what I already knew, that my fireplace was leaking air like an open window, so he suggested that he would come and do the audit after the fireplace was repaired to make sure everything was right. He came, he told me this and he rescheduled to come back a week later. He did a very nice job. My only concern is he told me that he would send me the report, I thought that he told me that I would have the report by the following Thursday, and I have been busy and haven't followed, but I don't expect there to be an issue when I call. There are a couple of things he had suggested that I would have to have insulated better, and I would like to have those fixed. He came when it was originally scheduled and he came a week later, and I had offered additional payment for that, but he said absolutely not. While he was here, he really took time to explain to me in much greater detail than the previous guy. When he talked to me about the couple of areas where there was leakage, I asked if it was possible to have it fixed without going into the roof, so he went into the roof. He was very professional, personable, and thorough. I feel like when I get that report, and the 3 three things that he had told me, if it is something that the company can repair, I am pretty confident that I will use them."
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Recommended by86%of homeowners
Showing 1-10 of 42

FAQs for insulation service projects in Belgium, 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 Belgium, 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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