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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon52
    Verified insulation services reviews

Top-Rated Insulation pros in Sanford - Updated Nov 2026

Avatar for Southern Maine Insulation and Heating Performance LC
Southern Maine Insulation and Heating Performance LC
4.5(
70
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Sanford, ME and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: Quick response

"I'm a General Contractor and i was very impressed with there knowledge , professionalism and response. I would highly recommend this company for all your insulation needs and will continue to use them on all my projects. Michael C."
Efficiency Maine
ID
Cert
Badge
Response time3 days
15 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for AJ Pro Green Insulation Corp
AJ Pro Green Insulation Corp
4.9(
8
)
Batt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - InstallSpray Foam Insulation - Install

Serving Sanford, ME and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"We were referred to AJ Pro Green by a colleague so we had them come out for a free estimate. They showed up on time and were very professional. They insulated our basement during our remodel and we couldnâ t be happier. The job was done quickly, was within our budget, and communication was fantastic. We would highly recommended!"
Roof open cell - walls closed cell
Roof open cell - walls closed cell
Roof/Attic closed cell
Spray Foam Insulation
Spray Foam Insulation

+57

Response time2 hrs
Recommended by85%of homeowners
Avatar for ABI LLC
ABI LLC
5.0(
5
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Sanford, ME 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 Sanford, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"The work that was done installing spray foam underneath my four season room was fantastic! The owner and worker were absolutely fantastic. Great quality workmanship and very reasonably priced! I will definitely call this company for future work! Very professional, friendly, and clean. No messes were left behind. I already referred this company to friends."
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 EcoFit Insulation LLC
EcoFit Insulation LLC
5.0(
1
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sanford, ME and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Ecofit Insulation provides high-quality retrofit insulation services for homeowners in the Portland suburbs and lakes region of Maine. We assess your home as a whole system and recommend what will make the biggest impact for your comfort, energy savings, and budget. Every project is custom, focused on long-term value—not upsells.\n\nWe're led by a BPI Certified Building Analyst with years of hands-on experience, and we participate in the Efficiency Maine program to help reduce your out-of-pocket costs. From attics and walls to basements and crawlspaces, our crew takes real pride in doing the job right. Our culture is built around accountability, high standards, and making the process clear, honest, and easy from start to finish.\n\nPlease note: We do not offer services for mobile or manufactured homes.

Response time2 days
Response rate95%
36 neighbors recently requested a quote
Avatar for Coastal Insulation
Coastal Insulation
4.9(
21
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Sanford, ME and surrounding areas

In business since 2017

Free estimates

"Andrew and his crew did an excellent job! They provided all the insulation (dense pack cellulose, spray foam, etc) for our large 2 story addition. They were on time and on budget. In fact, even when Andrew realized he had inadvertently overlooked a part of the job in the initial quote, he let us know immediately about the oversight (before we finalized the contract) and he went above and beyond to still keep his word (and the initial price). Andrew was great at communicating with us about arrival times, etc. He kept us in the loop on everything. He and his crew worked diligently until the job was done, which took about 6 days. They were polite and professional. They kept the job site clean. They were very detail oriented, and we truly felt they wanted to do the best job possible. Andrew is very knowledgeable about insulation ......and cost competitive. We HIGHLY recommend Coastal Insulation for all your insulation needs!"
Response time2 days
Recommended by100%of homeowners
Showing 1-10 of 44
Insulation FAQs, answered by experts

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.

The cost to install a radiant barrier ranges from $700 to $2,800, depending on the size of your roof and the type you choose. Most people pay an average of $1,700 to install a radiant barrier. Foil options, both single- and double-sided, cost between $0.10 and $0.90 per square foot, while spray-on options start at $0.60 and go all the way up to $1 per square foot—which can add up quickly.

Yes! Outdoor faucet covers work by enclosing the faucet with a thick, insulating material that will keep the faucet warmer than outdoor temperatures. They need to be sealed tightly against the house to work properly, though, so be sure to tighten the rubber strap or drawstring on the insulation cover to best protect your faucets.

When doing any type of project involving mold, it's important to wear the right protective gear. You'll want an N-95 or KN-95 mask to keep yourself from inhaling mold spores, which can be irritating or trigger an allergic reaction in people with weakened immune systems. You'll also want to wear protective eyewear and gloves to limit your contact with mold.

Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together. 

Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.

The Sanford, ME homeowners’ guide to insulation services

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