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Efficiency Maine covers 50% of attic and basement insulation for buildings with three or more units, up to $10,000. We’ve completed 5,000+ projects since 2006 and know the program inside and out. Tell us about your building, and we’ll tell you what it needs.
Three simple steps to a warmer, more efficient building
Step 1: Reach out
Call 207-594-2244 or send us a message. Tell us about your building and how many units it has, and we’ll tell you if it’s a fit.
Step 2: Free consultation
We’ll walk the building from basement to attic and give you a clear proposal, with pricing and the Efficiency Maine incentives that apply.
Step 3: Install and apply
We walk you through Efficiency Maine’s project application, install the work, and verify the results.
There are lots of insulation companies in Maine
See why building owners in Southern and Coastal Maine choose Evergreen.
Does your building qualify?
Efficiency Maine covers 50% of attic and basement insulation in buildings with three or more units, up to $10,000. Condos, mixed-use buildings, new construction, and major renovations don’t qualify. Tell us about yours and we’ll let you know.
What does multifamily weatherization involve?
Most owners reach out because a tenant mentioned a cold bedroom, or because the heating bill keeps climbing. In older triplexes and fourplexes, thin attic insulation and air leaks are almost always part of the story. Here’s what we install and what Efficiency Maine’s program covers.
Attic insulation
Attics are where most small apartment buildings lose the most heat. We air seal the attic floor first, then blow in dense cellulose. Efficiency Maine’s multifamily program calls for at least R49 in an open attic, and batt insulation doesn’t qualify.
Air sealing
Insulation slows heat transfer. Air sealing stops air movement. In a multifamily building, it also cuts down on air moving between apartments. The program requires air sealing, and the cost counts toward your project total.
Basement and rim joist insulation
Cold basements make for cold first-floor apartments. We air seal the basement ceiling and rim joist, then insulate either the ceiling or the foundation walls. The program covers one approach, not both, so we help you pick the one that fits your building.
Spray foam insulation
Spray foam is a targeted material. It works well at rim joists and foundation walls, where you need air sealing and insulation in one step. The program sets minimum thicknesses for foam, and closed-cell works in every area, with code-approved fire protection where required. We use it where it makes sense and tell you when it doesn’t.
Blower door testing
A blower door test shows how leaky a building really is. We use it to find the biggest leaks before the work starts, and to confirm the improvement afterward.
Up to $10,000 from Efficiency Maine
Efficiency Maine covers 50% of the project cost for attic and basement insulation in buildings with three or more units, up to $10,000 ($5,000 for the attic and $5,000 for the basement). Air sealing costs count toward the total. Condos, mixed-use buildings, new construction, and major renovations don’t qualify. Efficiency Maine’s incentives page has the current amounts.
Let’s talk about your building.
Reach out today →
Apartment insulation across Southern and Coastal Maine
Serving owners of 3 and 4 unit buildings
We provide insulation and air sealing for owners of small apartment buildings across Southern and Coastal Maine, typically within about a 45-minute drive of our Portland and Rockland offices.
Portland Office
Serves Greater Portland, the Lakes Region, and communities south and west along the coast, including South Portland, Scarborough, Cape Elizabeth, Falmouth, Yarmouth, Brunswick, Bath, and surrounding towns.
- Visit: 190 Riverside St, #2A, Portland, ME 04103
- Call: 207-594-2244
- Email: info@evergreenhp.com
Rockland Office
Serves the Midcoast from the Brunswick area north through Knox and Waldo counties, including Camden, Belfast, Thomaston, Damariscotta, Waldoboro, and surrounding communities.
- Visit: 315 Main Street, #205, Rockland, ME 04841
- Call: 207-594-2244
- Email: info@evergreenhp.com
