#1 Efficiency Maine Attic Insulation Company

#1 Efficiency Maine Attic Insulation Company

Last year, we helped more homeowners upgrade their attic insulation using Efficiency Maine rebates than any other Maine insulation company. 6,000+ projects completed since 2006.

Three simple steps to work with a top attic insulation company

1. Reach out today

Call 207-594-2244 to schedule a free consultation or energy audit. We’ll evaluate your home, review your insulation priorities, and explain available pricing options, timelines, and potential Efficiency Maine rebates.

2. Insulate with care

Our licensed team installs cellulose or spray foam insulation based on your attic’s needs. We air seal key leakage areas, and complete the installation so your home is left clean, comfortable, and ready for lasting performance.

3. Quality assurance

After installation, we confirm insulation depth, coverage, and overall performance to ensure everything meets expectations. We also help finalize rebate and incentive paperwork so you receive every available dollar.

There are lots of attic insulation companies out there

See why homeowners in Southern and Coastal Maine choose Evergreen

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Any questions about attic insulation for your Maine home?

Send us a message, or join our weekly newsletter. You’ll be the first to know about rebate changes, special offers, and seasonal tips to improve comfort and reduce energy costs.

What’s the best attic insulation?

We install several insulation types depending on how your attic is built and how you want to use the space. In most Maine homes, we recommend either loose-fill cellulose or spray foam insulation.

Blown-in cellulose insulation

Loose-fill cellulose is one of the most cost-effective ways to improve attic comfort and reduce heat loss in Maine homes. Here’s why Maine homeowners choose cellulose:

  • Excellent coverage around framing, wiring, and irregular surfaces
  • Strong energy savings at a lower installation cost
  • Made from recycled materials

Spray foam attic insulation

Loose-fill cellulose covers the entire floor of your attic, but spray foam can be installed along the underside of the roof deck, keeping the floor open for storage or future living space.

It also provides a higher insulation value per inch and excellent air sealing, helping reduce drafts and temperature fluctuations throughout the home.

Let’s talk about your home.

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Real results from homeowners like you

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Where do you install attic insulation?

Southern and Coastal Maine

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We install attic insulation for homeowners across Southern and Coastal Maine, typically within about a 45-minute drive of our Portland and Rockland offices.

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Common questions about Maine attic insulation

Getting started with attic insulation

Cold rooms, ice dams, high heating bills, and visible gaps or low insulation levels are common signs your Maine attic needs additional insulation. A professional attic inspection can confirm where heat loss is occurring.

Most Maine homes should have attic insulation levels around R-49 to R-60 to meet modern efficiency standards. With blown-in cellulose, that typically means seeing roughly 16–18 inches of insulation consistently covering the attic floor without gaps or thin spots.

Many older homes fall well below this level, making attic upgrades one of the most cost-effective energy improvements.

Warm air naturally rises, and without proper attic air sealing and insulation, heated air escapes through the ceiling. In Maine’s cold climate, this stack-effect heat loss can account for a significant portion of winter energy use.

In summer, the attic is closest to the sun and can become extremely hot, and adequate insulation helps block that heat from entering the living space, keeping your home cooler and more comfortable.

Upgrading attic insulation can significantly reduce heating and cooling costs. According to ENERGY STAR, homeowners can save about 15% on heating and cooling costs on average by air sealing and adding insulation in attics and other key areas of the home. Efficiency Maine rebates can further improve the return on investment.

Combine attic insulation with wall insulation and basement insulation to maximize your energy savings by creating a continuous thermal boundary around your home.

Comparing attic insulation options

Loose-fill cellulose attic insulation is the most common choice in Maine because it provides excellent coverage, strong energy performance, and cost-effective installation.

Spray foam is often recommended for specific attic configurations, especially when you want to keep the floor of your attic open for storage or future living space.

Attic insulation cost in Maine varies based on attic size, insulation type, and existing conditions, but many projects range from a few thousand dollars before rebates. Efficiency Maine incentives can significantly reduce upfront costs. Give us a call today to get estimated costs and savings for your home: 207-594-2244

In some cases, existing insulation can remain if it is dry, clean, and properly installed. However, in most attics, we need to remove the existing insulation to properly seal air leaks before installing new insulation. Removal becomes especially important when insulation is damaged, contaminated, or blocking effective air sealing improvements.

What preparation is needed before attic insulation installation?

Before installing attic insulation, we typically complete air sealing, address ventilation needs, and ensure safe access to the attic. These steps help the new insulation perform at its full efficiency level.

Our professional attic insulation crews use contained installation methods and protective coverings to keep work areas clean. Most projects are completed with minimal disruption to the home.

Many homeowners notice improved comfort immediately, while energy savings begin showing up on heating and cooling bills within the first season after installation.

Look for an insulation contractor with strong building science credentials, clear project scopes, and experience working with local rebate programs.

Choosing a company with BPI-certified (Building Performance Institute) technicians helps ensure the work follows recognized home performance standards for air sealing, insulation, and safety.

Evergreen Home Performance employs more BPI-certified technicians than any other insulation contractor in Maine, giving homeowners confidence that their attic insulation project will be completed correctly and built to last.

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