Serving Denmark, WI and surrounding areas
Approved
Super Service Award Winner
In business since 1978
Free estimates
Customers say: Quick response
"Will see how it works out when it gets colder should have added insulation long ago"

Serving Denmark, WI and surrounding areas
Approved
Super Service Award Winner
In business since 1978
Free estimates
Customers say: Quick response
"Will see how it works out when it gets colder should have added insulation long ago"

Serving Denmark, 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."





+9
Serving Denmark, 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!
Serving Denmark, 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.

Serving Denmark, WI and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
Were 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
Serving Denmark, WI and surrounding areas
In business since 2014
Free estimates
Small jobs welcome
"It was very easy working with Forest from American Insulation LLC. Great communication, great price, and job well done."

Serving Denmark, WI and surrounding areas
In business since 1974
Free estimates
Credit card accepted
"I would like to say that we would use GF Company in the future.
The Positive:
The sales representative, Ken Jr., was astounding. His knowledge of his field was excellent and I enjoyed talking with him. He was also very thorough with his estimate and writing down in great detail what we wanted to have done. I hope we get him as our sales representative when it is time to do our roof or our windows.
The work was done exactly as Ken Jr. had written on the estimate. For the most part the work matches the current look of the shed and it has already filled the water barrel.
The Negatives:
It was difficult to communicate with GF Company. We had originally received a quote from Rick a year before the work was done and we contacted GF Company many times to speak with him about getting the work done, but none of our phone calls were returned. Finally we asked for someone new and we got Ken Jr. sent to us.
After we paid our half-down deposit, we were told that we would get a call in about three weeks to find a date for the work to be done. After about 5 weeks we tried contacting GF Company. One phone call had us speaking with a lady on the phone who said that someone would call us back soon, but that never happened.
We never received a call to tell us when the work would be done as we wanted to have someone home to make sure things were done to our specifications. Several days after our phone call was not returned, we received a text message from our neighbor telling us that someone was doing work on our property, but my wife and I were both at work and by time we got home the work was done. Since Ken Jr. did such a great job with writing down what we wanted, we did not have any issues with what was done.
It appears that one of the items created on site for our downspout on the shed was likely spray painted on site. The paint job has already faded, but we can find some paint to paint it again.
Overall, it sounds like we had a bad experience, but we did not. The work that was done was done well and the sales representative we worked with was very knowledgeable. We would use GF Company again and recommend them, but encourage folks to have patience with communication.
"





+19

Serving Denmark, WI and surrounding areas
In business since 2017
Free estimates
Credit card accepted
"Albert is a hard worker masked everything well did a great job. I was on time and cleaned up very well."





Serving Denmark, WI and surrounding areas
In business since 2005
Credit card accepted
"It was great - they were quick and thorough. They even found a bit of flashing that was loose and repaired it.
Followed up with an estimate to replace our roof.
We would definitely use them in the future - I had my eyes out for the same deal from them this year!!
"





+3

Serving Denmark, WI and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"Removed many bags of blown-in insulation and sprayed new closed-cell foam into the attic roof beams"





+1
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.
From average costs to expert advice, get all the answers you need to get your job done.

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