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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon55
    Verified insulation services reviews

Find Insulation pros in Sandown

Avatar for Insul-Kings

Insul-Kings

4.23(
35
)
Approved Pro

Insul-Kings

4.23(
35
)
Approved Pro
Customers say: Terrific value
230 local quotes requested
26 years of experience

Insul Kings is a fully licensed and insured weatherization contractor specializing in weatherization work (adding insulation to home), energy audits, whole house air-sealing, and the installation of various types of insulation for both commercial and residential projects. We are a proud partner of Mass Save & NH Save and are rated in the top 5% of their contractor scoring.

"We got attic insulation through MassSave -- Fast, efficient, professional service. Looking forward to energy savings in the years to come."

Doyon W on November 2025

Insul Kings is a fully licensed and insured weatherization contractor specializing in weatherization work (adding insulation to home), energy audits, whole house air-sealing, and the installation of various types of insulation for both commercial and residential projects. We are a proud partner of Mass Save & NH Save and are rated in the top 5% of their contractor scoring.

"We got attic insulation through MassSave -- Fast, efficient, professional service. Looking forward to energy savings in the years to come."

Doyon W on November 2025




Metric Innovations

No reviews yet

Metric Innovations

No reviews yet
Free onsite estimate

I manage a highly skilled team of contractors specializing in residential remodeling and development. No job is too big or small! Great communication Honest & knowledgeable Punctual & responsible VERY clean

I manage a highly skilled team of contractors specializing in residential remodeling and development. No job is too big or small! Great communication Honest & knowledgeable Punctual & responsible VERY clean


Avatar for Insultech

Insultech

No reviews yet

Insultech

No reviews yet
10 years of experience

Insultech offers all of your insulation needs.let us work with you and we will figure out what best works for what you need done.we offer blown in insulation using fiberglass or cellulose. We offer regular batt insulation using fiberglass or mineral wool. We also offer spray foam insulation that is either open cell or closed cell. We offer quality,guaranteed work at the most competitive price that you will find. We will work with you every step of the way.we will leave your house just as clean If not cleaner than when we got there. We know that when we are finished with a job that not only will the customer be more than pleased but also with most jobs we can also guarantee that you will save a minimum of half of your old heating bill. Altho new to angi me and my partner who was also my mentor and the one that got me into this trade we have more than 70 years of experience and expertise.

Insultech offers all of your insulation needs.let us work with you and we will figure out what best works for what you need done.we offer blown in insulation using fiberglass or cellulose. We offer regular batt insulation using fiberglass or mineral wool. We also offer spray foam insulation that is either open cell or closed cell. We offer quality,guaranteed work at the most competitive price that you will find. We will work with you every step of the way.we will leave your house just as clean If not cleaner than when we got there. We know that when we are finished with a job that not only will the customer be more than pleased but also with most jobs we can also guarantee that you will save a minimum of half of your old heating bill. Altho new to angi me and my partner who was also my mentor and the one that got me into this trade we have more than 70 years of experience and expertise.


Rosario Construction Services

1.00(
1
)

Rosario Construction Services

1.00(
1
)
10 years of experience

Remodel, General contractor, Insurance rebuild, Fire rebuild, Water Damage repair, Mold remediation, Kitchen Remodel, Bathroom Remodel, New Construction, Home Builder, Architectural Design, Drywall, Flooring, Paint, Cabinetry, Countertop, Roofing, Siding, Exterior Repair, Deck, Doors, Commercial Fit out.

"Horribly wrong bad they never performed it. He took my money, he ran off. he was a scam and he do not provide services."

Romel A on April 2025

Remodel, General contractor, Insurance rebuild, Fire rebuild, Water Damage repair, Mold remediation, Kitchen Remodel, Bathroom Remodel, New Construction, Home Builder, Architectural Design, Drywall, Flooring, Paint, Cabinetry, Countertop, Roofing, Siding, Exterior Repair, Deck, Doors, Commercial Fit out.

"Horribly wrong bad they never performed it. He took my money, he ran off. he was a scam and he do not provide services."

Romel A on April 2025


Up-Model

No reviews yet

Up-Model

No reviews yet
Free onsite estimate

From mnimalist modern to custom rustic, Up-Model has been not just remodeling homes but upgrading spaces with an emphasis on the technology we love and need from New Hampshire to western Maine for over ten years.

From mnimalist modern to custom rustic, Up-Model has been not just remodeling homes but upgrading spaces with an emphasis on the technology we love and need from New Hampshire to western Maine for over ten years.


JS Drwall LLC

No reviews yet

JS Drwall LLC

No reviews yet

JS Drywall specializes in drywall hanging, taping, drywall patching, drywall remodeling, drywalling home additions, demolition, interior framing and insulation.Promising our customers with satisfaction.

JS Drywall specializes in drywall hanging, taping, drywall patching, drywall remodeling, drywalling home additions, demolition, interior framing and insulation.Promising our customers with satisfaction.


Avatar for 603 Basement Solutions

603 Basement Solutions

5.00(
4
)

603 Basement Solutions

5.00(
4
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.

"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest.  These guys know their stuff, couldnt be happier with my choice!"

Chris M on November 2022

With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.

"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest.  These guys know their stuff, couldnt be happier with my choice!"

Chris M on November 2022


C&R Construction

5.00(
1
)

C&R Construction

5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

C&R Construction is a small owner operated company with over 8 years of experience in new construction and remodeling projects. You dream it we can make it happen!

"Chris and Ryan did an excellent job with my back deck. I showed them a few pictures of what I liked and they came back with samples the following day. They made everything easy for us and did an incredible job. The deck is exactly what I showed them!! They are fast reliable and professional. I am already thinking about my next home improvement job that I can send their way. Thank you again!"

Kate R on March 2021

C&R Construction is a small owner operated company with over 8 years of experience in new construction and remodeling projects. You dream it we can make it happen!

"Chris and Ryan did an excellent job with my back deck. I showed them a few pictures of what I liked and they came back with samples the following day. They made everything easy for us and did an incredible job. The deck is exactly what I showed them!! They are fast reliable and professional. I am already thinking about my next home improvement job that I can send their way. Thank you again!"

Kate R on March 2021

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Insulation questions, answered by experts

If you have intermediate DIY skills and protect yourself with a full PPE suit, chemical-resistant gloves, goggles, and a respirator, you can install spray foam insulation yourself. DIYers have access to two-part spray foam retail kits that are best for use on small projects. Hiring a professional installer is likely the best option if you need to insulate a large space.

Doubling the insulation in your home also doubles the R-value of said insulation. In other words, by adding more insulation, you can reduce the heat loss by half. Most homes benefit from increasing insulation. Older homes, in particular tend to have less insulation as is, so doubling your insulation could drastically reduce your energy bills, keep your home more comfortable, and take the strain off your HVAC system.

Mineral wool has an excellent life expectancy of up to 50 years, provided it's kept dry and free of pests. Compared to fiberglass, with a life span of 20 to 30 years, mineral wool stacks up well for long-term cost savings. Sheep wool maintains a similar life span to fiberglass, while estimates for hemp wool insulation life expectancies are all over the board, ranging anywhere from 20 to 100 years.

On average, attic insulation costs $1 to $3 per square foot, so for a 1,800-square-foot attic, you’d pay $1,800 to $5,400, including materials and labor. The cost can vary depending on what type of insulation you use, how many insulation layers you need, and whether you need to remove existing insulation first.

The most energy-efficient windows are double—or triple-pane windows with low-emissivity (Low-E) coatings and gas fills between the panes. These windows reduce heat transfer, prevent drafts, and help maintain a consistent indoor temperature. But if replacing windows isn’t in your budget, pairing your existing windows with insulating window treatments can still make a noticeable difference in home comfort and monthly bills. 

The Sandown, NH homeowners’ guide to insulation services

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