Evergreen Your Home
With Maine’s Comfort & Efficiency Experts

Evergreen Your Home
With Maine’s Comfort & Efficiency Experts

Creating a Comfortable Nest for Baby

How Clare & Tim Upgraded Their Comfort with New Attic…

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From Damp to Dry: A Westbrook Basement Transformed

Basement Waterproofing in Westbrook, Maine: Heather’s Project with Evergreen Home…

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couple smiling in front of their white house

From Cold and Leaky to Warm and Efficient

How Jay and Rebecca Prioritized Comfort, Efficiency, and Their Home’s…

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Linda and Sam standing together in their garden, smiling in front of their home after completing an exterior home improvement project

A Warm, Comfortable Home, Ten Years On

How Sam and Linda Transformed Their Maine Home with Upgraded…

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Hidden insulation problems in a newer Belfast home

How a Belfast homeowner uncovered attic insulation issues and saved…

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Warming up a cold home office addition in Gray, Maine

“It’s cozy. I feel much more comfortable.” – Susan, homeowner…

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Our Services

Evergreen Home Performance: Maine’s Energy Audit, Insulation & Basement Waterproofing Experts

  • A local Maine business with almost 2 decades of experience
  • 4,500 Maine homes improved across nearly 200 communities
  • The leading contractor for Efficiency Maine insulation rebates
  • More BPI-certified staff than any other Maine business

Since 2006, we’ve worked with thousands of homeowners from Portland to Rockland and throughout Southern and Coastal Maine to make lasting improvements—using building science and a deep knowledge of how Maine homes work. When you’re ready to make your home more comfortable, healthy, and efficient—we’re here to listen… and guide you on your journey.

LEARN MORE ABOUT EVERGREEN

Available Now: Record-High Incentives

  • Up to $8,000 in Efficiency Maine rebates
  • Financing as low as $50 a month

This is as good as we’ve ever seen it here in Maine, and we can’t guarantee it will be around for long—don’t miss out on this once-in-a-lifetime opportunity!

LEARN MORE ABOUT INCENTIVES

Since 2006, We’ve Helped Thousands Of Maine Homeowners With Insulation And Basement Waterproofing

service area map - southern and coastal maine

Our Latest Articles

Twenty years of Evergreen Home Performance

If you’ve noticed foggy windows, musty closets, or cold rooms …

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What to do if your basement floods after heavy rain

If you found water in your basement after a storm, this guide covers what to do right now, why it…

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How much does it cost to fix a wet basement in Maine?

If you’ve noticed foggy windows, musty closets, or cold rooms …

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Don’t wait—book your free consult now and lock in today’s record-high rebates.

Awesome company. It was a few years ago that they did the audit and then we commissioned them to do the work. We subsequently sold our house and moved to South Africa, but their level of service and expertise will live on.

Odette Brown

I cant say enough about this company and the benefits that it created for our family. They are very professional and have effectively re-insulated our home. The heating bill proves the point.

Bob O.

Springvale

The team members were very professional, worked very hard, paid very close attention to detail and cleaned up meticulously every day. I really appreciated the care they took knowing the smallest details were going to make a big difference to our heating bills. Thank you!

Pam B.

Brunswick

I was extremely pleased with the professionalism and quality of service that I received from the Evergreen team. I met Richard to discuss options for insulation. I knew immediately that I wanted to do business with them because he did not try to over-sell extra services that I did not need. Dave was the project manager. He was not only kind, but very respectful of my home. I would highly recommend this company.

Darlyann M

Bath

We had a fantastic experience working with Evergreen to insulate our roof this winter. Everyone was extremely friendly throughout the process - the crew at our home worked hard, were approachable with questions, and the team leader even showed me around the project to point out specific areas they were working to improve.

Joel Wentz

We had Evergreen Home Performance of Rockland come in to make our home more energy efficient, and what a TOP notch crew. Brian and his crew did an amazing job from start to finish. Very knowledgeable and professional. We would Definitely highly recommend this crew to anyone who is looking for energy efficiency in their home with a company that truly is an expert and knows how to do a quality job and truly cares about their customer.

Melissa S.

Owls Head

I was very impressed by the professionalism of this company and the workers. Brian R. was very prompt in replying to my questions; the crew was meticulous in all parts of the work and attentive to the safety aspects concerning Covid; and Brian was extremely thorough in the final inspection. My attic is now snug and warm and I've noticed that the second floor is warmer as well.

Julia S.

Rockland

Evergreen has insulated two homes that we've owned now and both times we experienced exceptional service and craftsmanship. Our rep, Justin, went above and beyond answering questions and the installation team was attentive to every detail, including pulling out old poorly installed insulation and redoing a bathroom fan that wasn't up to current code. They also left the place spotless every day! Our home is already so much warmer this fall and we are looking forward to using less oil this winter.

Eva G.

Falmouth

Several years ago Brian Robinson evaluated the crawl space at my summer home on Islesboro where I knew moisture was becoming a problem. I had done quite a bit of work in the space many years prior with mixed results. When Brian offered some suggestions, they were ideas that incorporated work previously done, and would be a relatively low cost effort to improve the situation. He offered this advice over several phone conversations of some length, informally, and at no charge.

Cliff R.

Islesboro

We absolutely loved our experience with Evergreen. The team was incredibly kind, professional and great to work with. We're very impressed with the quality of work of the Evergreen team and how easy they made everything! Our house had barely any insulation ahead of this project and the results are amazing. Insulating the attic, walls and basement with Evergreen allowed us to tear a 50-year-old furnace, ductwork and oil tank out of the basement and now heat the home with new heat pumps. Evergreen also added 100 sq ft of clean, new storage space to the attic!

Nick S.

South Portland

Evergreen removed and replaced the insulation in my attic. They did a great job!, Crew was excellent, and the whole thing went smoothly, and the attic was NOT easy to get into or work in, so kudos to some hard work done well!

Joel A.

Portland

I never leave reviews, but had a great experience with Evergreen and wanted to spread the word! In short, we worked with them to insulate our roof this winter and have noticed surprising immediate results. The constant ice dams I have wrestled with are completely gone, and the home is noticeably more comfortable. It's a little too early to tell if our oil bill is going to reduce, but I imagine we will see an impact there as well.

Joel W.

Portland

Evergreen was so helpful in securing us Efficiency Maine funding for a big attic insulation project early this winter. They did all of the paperwork, and totally guided us through a vermiculite removal process that included a payment from a trust for the procedure. I could instantly feel the second floor being so much warmer than before. The boiler does not kick on nearly as frequently since they completed the job. It was worth every penny! Brian Robinson was so thorough throughout the whole process including a full walk through after the job had been completed.

Todd W.

Camden

Our house still the most efficient home we’ve ever lived in. And we have you folks to thank for that! A special howdy to Brian Robinson please!

Bruce O’Donal and Eva Butler

We initially contacted Evergreen through Efficiency Maine for an energy audit, which was conducted promptly and professionally by Justin McEdward, one of their Energy Advisors who is BPI-certified. After a thorough inspection of our newly purchased home, Justin explained in great detail what we needed and did not need. It was agreed that Evergreen would remove all of the existing attic insulation, which was not adequate, and replace it with blown in cellulose, to a rating of R-60.

Thomas W.

Scarborough

Portland Buy Local
Efficiency Maine
EPA Lead-Safe Certified
Building Performance Association
BPI Certified