Up to $8,000 in Efficiency Maine rebates
Over 4,500 Maine homes improved since 2006
BPI-certified experts using building science-backed solutions
Create a Comfortable Home with Proper Attic Insulation
Do your upstairs rooms feel too cold in the winter or too hot in the summer? Do ice dams form on your roof? If your attic isn’t properly insulated, your home is working harder and costing you more every season.
Evergreen Home Performance installs attic insulation in Portland, Rockland and the surrounding Southern and Coastal Maine areas, backed by building science and real-world results. Since 2006, we’ve helped thousands of Maine homeowners solve comfort issues, prevent ice dams, and lower energy bills.
How Attic Insulation Works
Insulation acts like a down jacket for your home. It slows the transfer of heat—keeping warmth in during winter and blocking heat from entering in summer.
With proper attic insulation:
- Your home stays warmer in winter and cooler in summer
- Upstairs rooms feel more consistent and comfortable
- Your HVAC system runs less often and lasts longer
- Your heat pump and ductless mini-splits work best
- You reduce energy waste and lower monthly heating and cooling bills
And when paired with attic air sealing, insulation also helps prevent moisture buildup, mold, and ice dams—common issues in Maine homes.
Air Sealing + Insulation = Long-Lasting Attic Protection
Insulation is powerful—but without air sealing, it’s incomplete.
Most attics have hidden gaps and cracks that allow air to flow freely between the inside and outside of your home. Before adding new insulation, we seal those leaks with high-performance spray foam to stop the airflow—and help your insulation perform its best.
Together, air sealing and attic insulation create a strong, continuous barrier against heat loss, moisture, and drafts.
Creating Conditioned Attics with Attic Insulation
Want to use your attic for storage—or even future living space? A conditioned attic may be the right move.
By insulating and air sealing the roofline (rather than the attic floor), we can help you turn your attic into a more stable, usable space—perfect for storage, offices, or homes with HVAC equipment in the attic.
What’s the Best Type of Attic Insulation?
We offer a range of attic insulation materials to match your home’s needs, but in most Maine homes, we recommend:
Blown-in Cellulose Insulation
Made from recycled paper and treated with borate, cellulose insulation is fire-resistant, mold-resistant, and highly effective. It can be installed as loose-fill or dense-packed. Cellulose is eco-friendly, non-toxic, and especially well-suited to Maine’s climate—it’s the most common attic insulation installed by participants of Efficiency Maine rebate and financing programs.
Spray Foam for Air Sealing
Before we install insulation, we seal leaks with spray foam to prevent air infiltration. This critical step protects against drafts that can weaken your insulation’s effectiveness and ensures your insulation performs as designed.
Save on Attic Insulation with Efficiency Maine Rebates & Other Incentives
- Up to $8,000 in Efficiency Maine rebates
- 30% federal tax credit (up to $1,200 per year)
- Home energy efficiency loans with payments as low as $50/month through Efficiency Maine and NEIF
Rebates and incentives for attic insulation in Maine are always evolving. As a leading insulation company in Portland, Maine and beyond, we’ve helped more local homeowners qualify for Efficiency Maine rebates and financing than any other company, and we’ll help you maximize your savings.
