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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon62
    Verified insulation services reviews

Top-Rated Insulation pros in Kensington - Updated Nov 2026

Avatar for AVID Energy Solutions
AVID Energy Solutions
4.9(
19
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Kensington, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Outstanding insulation work from start to finish. The crew was professional, punctual, and paid attention to every detail. The quality of the installation was excellent, and the difference was noticeable immediately. Everything was left clean and organized after the job was done. Highly recommend to anyone looking for top-quality insulation work."
95 neighbors recently requested a quote
The Green Cocoon, LLC
4.4(
25
)
Batt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - InstallBlown-In Insulation - Install or Upgrade

Serving Kensington, NH and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Crew was very friendly, knowledgable, and hard-working. They did a great job insulating my attic, basement, and eve. They did more work for lesser price than another competitor. After signing the contract the job was quickly booked! I would highly recommend!"
Response time2 days
Response rate92%
5 neighbors recently requested a quote
Avatar for NEXT LEVEL INSULATION INC
NEXT LEVEL INSULATION INC
5.0(
3
)
Spray Foam Insulation - Install

Serving Kensington, NH and surrounding areas

Approved

Free estimates

Offers commercial services

"⭐⭐⭐⭐⭐ Excellent service! They did an amazing job with the insulation in my house. Very professional, reliable, and hardworking. Everything was done with great attention to detail, and I’m really happy with the results. I highly recommend this company to anyone looking for quality insulation work!"
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Avatar for ABI LLC
ABI LLC
5.0(
5
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Kensington, NH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I could not have been more pleased by the work and the professionalism and the cost and the results. ABI was the first company to respond to my request for bids on the project. They were at the house within days of the request and were knowledgeable about putting insulation over light fixtures embedded in the ceiling. The attic did not have access from within or outside the house and they problem-solved this in a way that was a great solution. They lay down mats so as not to dirty up the carpets and stairs and they wore gear to protect themselves from the insulation. MY house was cleaner when they left than when they arrived. All of the people working on the project were professional and knowledgeable and the cost was extremely reasonable. For the first time this winter, my house feels like it can hold the heat. Looking forward to this summer, because I'm betting it will also improve my air conditioning!"
Response time12 hrs
39 neighbors recently requested a quote
Avatar for N.E.E. Construction & Spray Foam
N.E.E. Construction & Spray Foam
4.1(
46
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Kensington, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Warren did foam insulation to a gruesome crawl space and also installed a dehumidifier/fan to dry it up. He was very responsive, answered all my questions, was extremely polite, stayed under budget, excellent work done, and cleaned up every day. I m very pleased with all the work he did. I will hire him for more jobs. I highly recommend N.E.E. Construction and Spray foam."
Sub-Floor Basement
Basement Sub-Floor & Rim Joist
Rim Joist & Sub-Floor
Blown Insulation
Deck Build

+16

Response time2 days
Recommended by83%of homeowners
Avatar for Quality Insulation of Portsmouth
Quality Insulation of Portsmouth
5.0(
2
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+1 more

Serving Kensington, NH and surrounding areas

Approved (Corporate)

In business since 1975

Free estimates

Credit card accepted

"Quality Insulation of Portsmouth did two jobs for me: They added blown in insulation to my attic last fall and installed gutters plus leaf guards this spring. Both jobs were excellently done at a reasonable cost. I would certainly recommend them and will likely use them again in the future."
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Response time2 days
16 neighbors recently requested a quote
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Insulation FAQs, answered by experts

Yes, products made from renewable resources and with reduced chemical impacts.

It is usually possible to install insulation yourself, but it’s often better to hire an insulation professional. An experienced insulation pro can determine which type of insulation is best for your space and the R-value get the most value and comfort in your home. Certain types of insulation can cause skin, eye, and lung irritation, and a professional will have the equipment necessary to keep themselves safe and limit the effect on your indoor air quality after the installation. Certain types of insulation—like blown-in and loose-fill insulation—demand a professional for proper functionality and safe installation.

Yes, brick houses are better insulated, because the bricks slow down the passage of air from the outside to the inside and vice-versa. This helps to stabilize the internal temperature of the home. When combined with proper residential insulation, brick houses are more efficient and better insulated than other types.

Most heat in a garage is lost through air leaks in windows, doors, and walls. This is especially true if the walls are uninsulated, which is common in garages. Consider insulating your garage before installing a garage heater to ensure the heat it generates isn’t wasted, making it less efficient.

Ductwork sweats due to a temperature difference between the air inside the ducts and the surrounding air, similar to how a cold drink develops condensation in the heat. This sweating is a sign that your HVAC system is not operating at peak efficiency. The best way to keep ductwork from sweating is to wrap it in proper insulation, which also improves your system's energy efficiency. Another option is to close off your crawl space and install a dehumidifier to dry the air and lower its dew point.

The Kensington, NH homeowners’ guide to insulation services

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