
Insulation Services in Portland, ME
Compare 29 insulation services contractors near you in Portland and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 28, 2026
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Other Businesses in This Area
High Efficiency Foam
29+ years onlineIDI: Insulation Distributors Inc.
~15 years onlineStatewide Foam & Coatings Inc.
4½+ years onlineCasco Bay Insulation Inc.
5.0~16 years onlineCasco Bay Renovations
5.014 years onlineDH Insulation and Home Performance LLC
5.03½+ years onlineFree Energy Maine, LLC
5.017½+ years onlineHi Tech Insulation Services
5.021½+ years onlineHunter Panels
5.0~27 years onlineL&W Supply - Portland, ME
5.027+ years onlineRook Energy Solutions, LLC
5.0Horizon Homes
4.9~18 years onlineABC Supply Co. Inc.
4.8~28 years onlineAll In One Insulation
4.813 years onlineAnderson Insulation of Maine
4.8~15 years onlineKamco Supply Corp. of Boston
4.829½+ years onlineSouthers Construction
4.812½+ years onlineNortheast Spray Insulation
4.419½+ years onlineBuilders Installed Products Maine
4.11½+ years onlineDone Right Insulation
4.1Quality Insulation
3.514½+ years onlineInsulation Services in Nearby ME Cities
Other Services in Portland
Insulation Services in Portland, ME
Portland ME insulation upgrades pay back fast because Maine's cold winters (-15°F design temps) and high CMP/Versant electric and oil heating costs make heating loads expensive. Most pre-1990 Portland homes have R-19 to R-30 attics — well below the modern R-60 to R-80 target for Northern New England climates. Air sealing before insulation matters in older Munjoy Hill, West End, and Deering homes. Dense-pack cellulose, blown attic insulation, and basement spray-foam are typical retrofits. NeedInstall connects you with Portland insulation contractors who handle Efficiency Maine rebates, blower-door testing, and proper detailing for the maritime climate.
Portland attic top-up to R-60: $2,200-$5,500. Wall dense-pack: $4,500-$11,000 retrofit. Basement spray-foam: $4-$7 per board foot. ME requires no specific insulation license but contractor's license needed. Efficiency Maine rebates (up to $4,000+ for whole-home retrofits). Blower-door test ($300-$500) often required for rebate qualification.
Frequently Asked Questions
- Efficiency Maine rebate?
- Yes — up to $4,000+ for whole-home weatherization plus heat pump rebates. Pre-approval required. Your installer should walk you through application.
- Worth it on oil heat?
- Definitely — Maine oil heat is among the most expensive heating in US. R-19 to R-60 attic upgrade saves $400-$900/yr on oil. Payback 3-7 years before rebates.
- Spray-foam or cellulose?
- Cellulose for attics (cheaper, better acoustic, recycled content). Spray-foam for basements and rim joists where air-sealing matters most. Hybrid approach common.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Portland and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.

