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TRUSTED BY NORTHFIELD, MN HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon52
    Verified insulation services reviews

Top-Rated Insulation pros in Northfield - Updated Nov 2026

Avatar for Guevara Insulation, LLC
Guevara Insulation, LLC
4.9(
11
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Northfield, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"Ryan, Miguel, Luis and staff did a great job removing old insulation, inspect, clean & disinfect, spray foam, and blow in new insulation. They were efficient, kept me informed, cleaned up well, and addressed minor issues after the completion was complete. I had planned to also spray foam the basement, but we could not vacate the house (fumes) with a member in hospice. This will be done as soon as we are able. Highly recommended!"
Insulation
Insulation
Insulation
Insulation
Insulation

+13

Response time2 days
Response rate98%
35 neighbors recently requested a quote
Avatar for M&J Insulation
M&J Insulation
5.0(
1
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or Upgrade

Serving Northfield, MN and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion we work with you until the job is done. We thrive to take care of all of our clients' unique needs. We are ethical, honest and easy to communicate with. Call us today and you'll be pleased you did. Thank you

Duct work insulation
Duct work insulation
Duct work insulation
Duct work insulation
Duct work insulation

+3

10 neighbors recently requested a quote
Avatar for Home Seal Insulation
Home Seal Insulation
4.7(
90
)
Blown-In Insulation - Install or Upgrade

Serving Northfield, MN and surrounding areas

In business since 2014

Free estimates

Credit card accepted

"The pricing was very reasonable. I had my attic insulated. The blown in insulation took less than an hour. They were very friendly. I would use this company again for future work."
Response time2 days
56 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Century Insulation
Century Insulation
4.4(
54
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Northfield, MN and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"Ryan did our estimate, and was very efficient. Andrew and Evan did the insultation work and did a fantastic job! It was a large area to get prepped and then to insulate and they did a great job every step of the way! Our entire home is now at a R50+ insulation level, as opposed to the R25-30 and 0 values we had before. It will be interesting to see what sort of impact the newly insulated garage and 3 season porch has on the comfort level in the main house. The team did a great job for us and I would recommend them to anyone considering insulation!"
Ice Dams
Ventilation
Insulation Installation
Attic Insulation
Response time2 days
Recommended by91%of homeowners
specialty insulators
3.9(
28
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Northfield, MN and surrounding areas

In business since 1974

"Carl was very prompt with calling me back and actually arranged to fit me in a day earlier than planned. The work was all completed within a couple hours. I guess I expected the spackling to be all set to repaint over, but that will require some touch-ups before painting. Overall, great experience and we will use Specialty Insulators again when we require this type of project."
Recommended by66%of homeowners
Showing 1-10 of 34
Insulation FAQs, answered by experts

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.

Yes, exposure to fiberglass insulation can cause harm to your skin and eyes. However, this typically refers to the fiberglass insulation that is mostly used in walls and attics. Fiberglass doors don’t pose risks for fiberglass exposure because they're fully encased in polymer cladding.

Structural insulated panels and rigid foam boards have the highest R-value of any insulation that contractors commonly use, with R-values reaching up to around 8.0. These types of insulation are best in extremely cold climates, but they’re generally preferred for new construction, as they can be challenging to retrofit. Blown-in and loose fill insulation provide the next best insulative value, provided the installation is done properly. It’s important to choose an insulation type that meets your needs based on climate, as maximizing R-value may not always be financially worthwhile if you live in a moderate climate.

Whether plaster walls should be insulated depends on whether the walls are at particular risk of moisture problems. In many cases, you can insulate plaster walls, while in others, it's a poor decision because of the lack of a vapor barrier. Choose a reputable insulation contractor to help you decide if and how to proceed to increase your home's energy efficiency.

Yes. Proper, complete insulation will ensure that you trap the most cool or warm air inside your home, preventing high energy bills. In addition, insulation tends to settle and compress, leaving gaps over time; the more you insulate completely during the initial installation, the less you’ll need to do down the line.

The Northfield, MN homeowners’ guide to insulation services

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