The Best Insulation Contractors in Long Island, ME

Compare the highest-rated insulation professionals in Long Island, Maine. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Evergreen Home Performance

4.8
(180 reviews)
Verified

A leading energy efficiency and insulation contractor in Southern Maine, specializing in whole-home solutions. They are well-known for their comprehensive energy audits, which inform their insulation and air sealing work, ensuring maximum effectiveness and eligibility for utility rebates.

18 Riverview Dr, Saco, ME 04072 (Primary office; serves the entire Southern Maine coast)

Specialties & Features

Energy efficiency audits
Spray foam insulation
Air sealing services

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Allied Building Services

4.7
(90 reviews)
Verified

A full-service insulation and building performance contractor with a strong reputation for quality workmanship in both new construction and existing homes. They offer a wide range of insulation types and are proficient in complex projects, making them a good fit for the varied home styles on islands.

99 West Ave, Portland, ME 04103 (Strategically located to serve Casco Bay)

Specialties & Features

Spray foam insulation
Blown-in insulation installation
Basement and crawl space insulation

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Seal It Insulation Systems

4.6
(70 reviews)
Verified

A specialized insulation contractor focused on creating tight building envelopes. They are particularly skilled in application techniques for both open and closed-cell spray foam and dense-pack cellulose, ideal for upgrading the energy efficiency of older island homes.

Serves the Greater Portland & Sebago Lake Region (Mobile service-based)

Specialties & Features

Attic insulation installation and upgrade
Wall insulation services
Insulation removal and replacement

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Long Island

The insulation market serving Long Island, Maine, is characterized by high-quality, specialized contractors from the mainland. Due to the logistical challenges of transporting materials and crews via ferry, projects on the island typically incur a premium cost compared to mainland work. This barrier to entry naturally selects for established, professional companies with the resources and commitment to handle island service. The competition, while not high in sheer numbers, is intense in terms of quality and service reputation. Homeowners on Long Island are often highly motivated by energy efficiency and preservation, given the exposure to harsh coastal weather and the desire to protect historic properties. Typical pricing is above the state average, reflecting the high quality of materials used (e.g., spray foam), the expertise required for older home retrofits, and the added logistics. Homeowners should expect a strong emphasis on comprehensive energy audits and air sealing as a foundational step, which is a best practice promoted by Efficiency Maine, the state's energy efficiency program that offers significant rebates for which these top providers are well-versed in facilitating.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Long Island regulations and climate

Frequently Asked Questions About Insulation in Long Island

Get answers to common questions about insulation services in Long Island, Maine.

1What is the most important type of insulation for my Long Island home given our coastal Maine climate?

For Long Island's cold, damp, and windy coastal climate, creating a continuous air barrier is paramount. We prioritize air sealing and dense-pack cellulose or spray foam insulation in walls and attics to prevent heat loss, moisture intrusion, and wind-driven drafts, which are common issues here. Properly addressing air leakage is often more critical than just adding more insulation material.

2How does the seasonal ferry schedule impact the timing and cost of an insulation project on Long Island?

The ferry schedule is a major logistical factor. Most contractors will schedule projects for weekdays to avoid summer and weekend ferry traffic, and material deliveries must be carefully coordinated. This can sometimes extend project timelines slightly. While it may add a small logistical premium, a reputable local contractor will factor this into their planning and quote.

3Are there specific building codes or incentives in Maine I should know about before insulating?

Yes, Maine has strict energy codes (based on the IECC) that require high insulation R-values, especially in coastal Zone 6. Furthermore, Efficiency Maine Trust offers significant rebates for insulation upgrades, which can substantially offset project costs. A qualified local installer will be familiar with both the code requirements for our area and how to help you apply for these valuable rebates.

4What should I look for when choosing an insulation contractor on Long Island?

Look for a contractor with proven experience working on island homes and navigating ferry logistics. They should be licensed and insured in Maine, provide clear references from other island residents, and offer a detailed assessment that includes a blower door test to measure air leakage. Local knowledge of dealing with older, seasonal homes is a significant advantage.

5My older home feels drafty and has condensation issues in winter. Will adding insulation solve this?

Adding insulation alone can sometimes worsen moisture problems if not done correctly. In Long Island's climate, the solution requires a comprehensive approach: first, identifying and sealing air leaks from the salty, damp ocean winds, then ensuring proper ventilation (especially in attics and crawl spaces), and finally adding the correct type of insulation. This controls both heat flow and moisture movement.