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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."
92 neighbors recently requested a quote
The Green Cocoon, LLC
4.4(
25
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

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%
6 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!"
Addition
Addition
Addition
2 neighbors recently requested a quote
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
36 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 - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective 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

No, 55 degrees Fahrenheit is not too cold for a house, as it’s a temperature that will keep your pipes and appliances from freezing. Well-insulated homes can even go to 50 degrees, but check with an HVAC pro before opting for such a low temperature. Stick to 55 degrees to be on the safe side.

Winterizing your outdoor plumbing keeps your outdoor spigot from freezing and potentially bursting. This includes draining residual water out of the pipe and spigot after turning the valve off, then removing garden hoses and other attachments from the spigot before winter comes. Insulating the pipe that leads to the spigot and installing a freeze-proof faucet also help, as does installing an outdoor faucet protector.

You should not put fiberglass insulation in basements, since fiberglass is known to trap mold and mold is more commonly grown and produced in basements. You should also avoid placing insulation near water heaters, oil burners, or other hot appliances. For more information about the best and worst places to install insulation, consider hiring an insulation professional.

One of the disadvantages of soffit vents is they can bleed warm air from the attic during winter, resulting in slightly higher energy bills and a colder house. There are ways to mitigate this effect—mostly just closing the vent in the fall. What’s most important is your attic is ventilated to some degree in the winter.

Carriage, sliding, folding, and trackless pivot doors all replace a standard roll-up door. Glass doors and roll-up screens work well when you convert the garage into living space. Match the style to your driveway clearance and climate.

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.