Closed-cell foam on basement walls and rim joists: warmer floors, no more drafts at the sill, and a basement that stops pulling cold into the house.
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Efficiency Maine offers rebates on qualifying insulation and air sealing work, with the biggest rebates for low- and moderate-income households. We'll tell you which tier you likely fall into at your free assessment. Rebate amounts and eligibility are set by Efficiency Maine and can change. We'll confirm what applies to your home.
Most Maine basements are a big cold, leaky box under the house. The rim joist (where the house sits on the foundation) is one of the leakiest spots in any home, and bare fieldstone, block or poured walls pull heat out all winter. Closed-cell spray foam on the rim joists and foundation walls air-seals and insulates in one step, acts as a vapor retarder at about 1.5 to 2 inches, and doesn't hold moisture like fiberglass. The result is warmer floors upstairs, fewer drafts and lower heating bills.
Basement jobs depend on the wall area, the foundation type and whether old fiberglass needs to come out first. Every house is different, so we look at it in person and give you a free written quote with each area, the insulation type and the thickness spelled out, plus the Efficiency Maine rebate you're likely to qualify for. The number on the quote is the number you pay.
Get My Free QuoteInsulation and air sealing can qualify for Efficiency Maine rebates. We'll show you what you likely qualify for at the quote.
Insulation slows heat, but drafts walk right through it. We seal the leaks at the attic floor, rim joists and foundation first, then insulate.
Closed-cell foam for basements and rim joists, cellulose where it's the better value, open walls sprayed while they're open. Not one product for everything.
A real Central Maine basement, before and after. Ground moisture and cold air sealed out, foundation walls foamed.
Most bad spray foam jobs go wrong for the same few reasons. Here’s what to check before you hand anyone a deposit:
More insulation on top of leaks doesn't stop drafts. A good installer seals the attic floor, rim joists and foundation before insulating.
A quote should list the material and the thickness or depth for each area. A low price with no thickness listed usually means thin insulation.
Efficiency Maine rebates can cover a real share of insulation and air sealing. Ask whether the installer will help you with the paperwork.
Foam in basements, attics and living areas may need a protective covering, depending on how the space is used. A pro knows the requirements.
Insulation isn't a fix for a leaking roof or a flooding basement. A good installer checks for water and tells you if something needs repair first.
Stop heat from pouring out through the attic: fewer ice dams, warmer upstairs rooms and a furnace that isn't running all night.
Learn more →Seal a damp dirt-floor basement or crawl space with a heavy vapor barrier and foam-sealed walls. Drier air, no musty smell, warmer floors.
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Spray foam in open walls for new construction, additions and remodels, and dense-pack cellulose for older homes with closed walls.
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Blown-in cellulose for attics and dense-pack cellulose for closed walls: a cost-effective way to add a lot of R-value to an older Maine home.
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Closed-cell foam for garages, workshops, barns and metal buildings. Stops the roof from dripping and makes the space heatable in January.
Learn more →Tell us about your project and we’ll send a clear, written quote fast. No pressure, no obligation.
Central Maine Spray Foam