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TRUSTED BY WILLIAMS BAY, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon26
    Verified insulation services reviews

Find Insulation pros in Williams Bay

Avatar for Paragon Insulation
Paragon Insulation
4.8(
62
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+2 more

Serving Williams Bay, WI and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"We were so happy with our experience with Randy from Paragon Services, we have had him out 2 times in the last month to address both the attic and the crawl space of our new home. After Randy and his team replaced our fiberglass insulation in the crawl space with spray foam, it raised the average air temperature on our first floor by over 15 degrees! I has made a HUGE difference right away and I can’t wait to see the $$ we save on our heating/air conditioning. Paragon Services is fast to respond to messages and phone calls. Randy was able to come out for a quote within a few days we were on the schedule within a week or two. On installation day, the crew was on time and professional. I was blown away by Randy’s knowledge and honesty. I never felt rushed during our conversations or pushed to commit to a purchase. He took his time to investigate the issues, develop an appropriate plan of action, and prepare a thorough quote. He went over everything with me to make sure I understood what he was proposing and why. I learned so much just in our few conversations. I also loved that he not only addressed the issue I called him out for, but made sure any related issues were addressed as well. The prices are very reasonable and their customer service is excellent! I definitely recommend Randy and Paragon Services!"
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+24

Response time4 days
Response rate100%
4 neighbors recently requested a quote
Avatar for USA Insulation of Madison
USA Insulation of Madison
4.9(
50
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Williams Bay, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"I called 5 Insulation companies for estimates in Oct.2025, when we were having other work done to our home & discovered we had No insulation between the studs. USA 🇺🇸 Insulation was the most expensive but they were the most thorough during the sales process, as far as explaining how everything was to be done & showed me photos. They were the ONLY company that offered the blown in expansion Insulation. Which is what made the job a little more costly, but they used the best product because it doesn't settle over time, which to me made it worth it. They came on Dec.15th which was a VERY cold day, with a 4 man crew,each with a specialized task, (Foreman, siding removal, hole driller, foam insertion). They were very professional, answered all my questions, cleaned up my property when done & did a heat camera procedure that showed me how the walls were cold before hand & were already warming by end of job. I highly recommend this company to anyone needing to have this done."
Foam insulating a wall
USA Insulation Premium Foam
Attic Insulation
USA Insulation Blown Fiberglass
Arkdale, WI

+24

Response time1 day
Response rate100%
44 neighbors recently requested a quote
Avatar for Elite Insulators
Elite Insulators
4.8(
21
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Williams Bay, 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 Daniel Nagel
Daniel Nagel
4.6(
42
)
Injection Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Williams Bay, WI and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"We reached out to Dan with the issue of freezing pipes and cold rooms in our old house. Dan inspected the house and proposed a plan to remedy these issues. Aside from the more traditional air sealing and insulation solutions, Dan also recommended insulating the area of our house above our soffit, which was difficult to access but that appeared to be a major insulation issue. I should add the other firms we requested quotes for did not identify this area in their proposal. I firmly believe the proposals from the other firms would not have fixed our issues. Dan worked for ~2 weeks on air sealing our attic and house, adding insulation to our attic, removing our soffit and adding insulation and reinstalling soffit. Work was done well and within budget and at a fair price. Dan is very easy to work with and takes pride in his work. We are very happy to report our pipes have not frozen and the cold rooms are no longer cold - would highly recommend Dan to others - he went above and beyond."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Spray Foam Genie
5.0(
2
)
Spray Foam Insulation - Install

Serving Williams Bay, WI and surrounding areas

Approved

In business since 2007

Free estimates

With over 10 years of experience in the insulation industry, we are the service professionals you need to take care of your home or business. We handle all types of insulation projects. We will treat your home as we would treat our own. Give Spray Foam Genie a call today, we look forward to working with you!

Response time1 day
8 neighbors recently requested a quote
Avatar for Modern Exterior
Modern Exterior
4.5(
31
)
Blown-In Insulation - Install or Upgrade

Serving Williams Bay, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"When it rains, water needs to go somewhere, right? Without gutters, that water just pours off your roof and can mess up your foundation before i moved in my house has none. Now we have them and divert into milwaukee storm system"
New roof installed
Completed Roof and Skylights Project
Ridge vent replacement completed
New vent being installed
New home with new gutter gguards

+600

Response time5 hrs
Response rate99%
179 neighbors recently requested a quote
RetroFoam of Wisconsin Inc.
New to Angi
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Williams Bay, 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.

46 neighbors recently requested a quote
Showing 1-10 of 38
Insulation questions, answered by experts

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

The amount of insulation you need will vary depending on where you live. Energy Star recommends certain minimum insulation values in different geographic regions. In most cases, however, even adding a little insulation is better than not adding any.

If you have access to the foundation walls, adding spray foam insulation to your existing unfinished basement or crawl space is straightforward. Replacing existing insulation in your unfinished attic space is possible after removing the old insulation. However, spray foam insulating an existing wall after the drywall is in place isn’t possible unless you remove most of the drywall.

Durable materials suited for climate include aluminum for coastal areas or composite wood in varying environments for durability and minimal upkeep.

Three signs that you need crawl space insulation are drafts, high energy bills, and mold. Drafts can start in crawl spaces and cause hot or cold air to spread to the rest of your home through holes in the floors and walls. And even if your entire home is well-insulated, you can still feel an unchecked draft from your crawl space and in your utility bill. Uninsulated crawl spaces can let in air and moisture, and because they’re built directly on the ground and difficult to dry out, they are hotspots for mold and mildew.

The Williams Bay, WI homeowners’ guide to insulation services

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