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TRUSTED BY SHERWOOD, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified insulation services reviews

Top-Rated Insulation pros in Sherwood - 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 Sherwood, 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
2 neighbors recently requested a quote
Recommended by92%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 Sherwood, 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 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 Sherwood, 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 Sherwood, 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.

81 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 Sherwood, 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 Keeney Home Services
Keeney Home Services
5.0(
1
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Sherwood, WI and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

At Keeney Home Services, our commitment to excellent service sets us apart from other home improvement companies. We are true masters of our craft and hold numerous certifications and awards for both our workmanship and our customer service. We hold third-party recognition that includes the GuildQuality Award for Service Excellence and an A+ rating with the Better Business Bureau. We are also members of several Home Builders Associations throughout the area and are certified by Good Housekeeping.\n\nAdditionally, our technicians are factory-trained in every product we offer, ensuring your new products are installed flawlessly to maximize their performance. Our top-of-the-line products include GutterShutter® Gutters, GAF asphalt shingle roofing, and Ultimate Attic Solution insulation. Our expertise in each of these products as well as their proper installation is why homeowners throughout Northeast Wisconsin prefer us over other home improvement companies in the area.\n \n

5 neighbors recently requested a quote
Avatar for Stendahl Exteriors
Stendahl Exteriors
4.1(
252
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Sherwood, WI and surrounding areas

In business since 2005

Credit card accepted

"Stendahl Exteriors was very knowledgeable about the insulation problem/getting a new roof and new siding. They were able to complete the work in a very timely manner.  We weren't planning on the insulation being done but they were very helpful and courteous in helping us fix this."
Before
During
Completion
Before
During

+3

Recommended by82%of homeowners
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Insulation FAQs, answered by experts

Yes, it is possible to have too much insulation, which can have detrimental effects. While more insulation might seem better for energy efficiency, a home needs to "breathe" or ventilate to release moisture that accumulates inside. Over-insulating can seal a house too tightly, trapping water vapor and leading to several problems, including mold, mildew, and condensation. Homes in warm, humid climates are particularly susceptible to mold, while those in colder climates can experience condensation from temperature fluctuations. Additionally, adding more insulation than the recommended amount for your climate may not provide recoverable energy savings. To avoid these issues, consult a professional insulation contractor who can determine the optimal amount of insulation for your home.

Most insulation lasts 15 to 20 years, but it really depends on the type of insulation. Spray foam is a permanent insulation material that can last up to 100 years. Fiberglass and cellulose typically settle, shift, or deteriorate around 15 years. Once your insulation reaches the 15-year mark, it's time to check it for signs of needing to be replaced.

There are several strategic ways to lower your home insurance premium. The primary one is to shop around and get quotes every few years to make sure you’re getting the best deal. Also, sometimes bundling your auto and homeowner’s insurance will get you a discount on both. Finally, try to keep your credit score up; many homeowner insurance companies use credit scores to generate quotes.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

At a minimum, blown-in insulation lasts 20 to 30 years. Cellulose and sheep’s wool come from natural materials, so they likely max out at around 30 years. Fiberglass and rockwool feature artificial materials that boast lengthy lifespans, up to 50 years, or even longer in some cases. As always, this timeline assumes you don’t run into any issues, such as flooding or mold, that shorten the lifespan.

The Sherwood, WI homeowners’ guide to insulation services

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