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  • Verified reviews icon24
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Find Insulation pros in Peaks Island

Avatar for Insul-Kings

Insul-Kings

4.56(
27
)
Approved Pro

Insul-Kings

4.56(
27
)
Approved Pro
Customers say: Terrific value
26 years of experience
Free onsite estimate

Insul Kings is a fully licensed and insured weatherization contractor specializing in weatherization work (adding insulation to home), energy audits, whole house air-sealing, and the installation of various types of insulation for both commercial and residential projects. We are a proud partner of Mass Save & NH Save and are rated in the top 5% of their contractor scoring.

"We got attic insulation through MassSave -- Fast, efficient, professional service. Looking forward to energy savings in the years to come."

Doyon W on November 2025

Insul Kings is a fully licensed and insured weatherization contractor specializing in weatherization work (adding insulation to home), energy audits, whole house air-sealing, and the installation of various types of insulation for both commercial and residential projects. We are a proud partner of Mass Save & NH Save and are rated in the top 5% of their contractor scoring.

"We got attic insulation through MassSave -- Fast, efficient, professional service. Looking forward to energy savings in the years to come."

Doyon W on November 2025


Family operated business since the 1970's. We specialize in blown-in fiberglass insulation and other insulation services. We always provide excellent customer service at a fair price.


Avatar for RP Drywall

RP Drywall

No reviews yet

RP Drywall

No reviews yet

RP Drywall (The best quality for your money!) New home sheetrock hanging and taping. Remodeling sheetrock hanging and taping. Insulation. Demolition. Painting. Give us a call for your next job! 207-294-2897

RP Drywall (The best quality for your money!) New home sheetrock hanging and taping. Remodeling sheetrock hanging and taping. Insulation. Demolition. Painting. Give us a call for your next job! 207-294-2897


Greenwall Insulation LLC.

No reviews yet

Greenwall Insulation LLC.

No reviews yet

Spray foam insulation can save you up to %50 on your heating and cooling costs each month. Specializing in open and closed cell foams. We offer the best comparable rates.

Spray foam insulation can save you up to %50 on your heating and cooling costs each month. Specializing in open and closed cell foams. We offer the best comparable rates.






Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
10 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!


WINDO THERM

No reviews yet

WINDO THERM

No reviews yet
24 years of experience

We manufacture Advanced Energy Panels (AEPs). AEPs are a retrofit for historic windows or any window people can't afford or don’t wish to replace. AEPs are interior window insulating panels and can be installed in any building –office, home or industrial. AEPs have a higher insulation and air sealing rating and provide greater comfort than most replacement windows, yet they are a fraction of the cost. AEPs are custom made to fit over existing openings, protecting, preserving and improving your existing windows.

We manufacture Advanced Energy Panels (AEPs). AEPs are a retrofit for historic windows or any window people can't afford or don’t wish to replace. AEPs are interior window insulating panels and can be installed in any building –office, home or industrial. AEPs have a higher insulation and air sealing rating and provide greater comfort than most replacement windows, yet they are a fraction of the cost. AEPs are custom made to fit over existing openings, protecting, preserving and improving your existing windows.

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Insulation questions, answered by experts

The most affordable way to insulate behind unfinished walls is to install fiberglass batts or rolls. These total around $0.75 per linear foot, with the width matching the gaps between standard studs perfectly. However, it’s important to consider the R-value of your insulation and the climate in your area, as fiberglass insulation isn’t the best in terms of preventing heat transfer. Plus, the most affordable option may cost more on electricity bills over time. The most affordable way to insulate behind finished walls is to leave them up and use blown-in insulation to avoid drywall replacement.

STC (Sound Transmission Class) ratings tell you how well something blocks airborne noise. It’s a single number that sums up how much sound a material, like a window, can stop across regular speech frequencies. The higher the number, the better the sound reduction. A typical single-pane window hovers around STC 25 (where you can hear normal conversations), while well-sealed, double-pane options can push past STC 45 (which blocks out loud speech and most music). Just keep in mind that STC doesn’t cover everything—low rumbles like bass or thunder can sneak through—so pairing methods are always ideal for the most peace and quiet.

DIY installation is not recommended, as professionals ensure even distribution, proper sealing, and compliance with building codes.

Your home's location, budget, and the type of insulation you’re using are just a few of the factors that can help you choose the right insulation. For example, blown-in insulation is typically used in attic spaces, while batts and rolls are ideal for floors and walls. Blown-in insulation is usually a good option if you're adding more insulation to an area that already has some, but not enough.

There are no building codes requiring HVAC duct insulation for ductwork in conditioned spaces, like walls or floors. Unfinished basements are also exempt from this requirement. However, many homeowners choose to insulate their home's ductwork in some or all of these areas to increase the system's efficiency and reduce potentially harmful areas of condensation.

The Peaks Island, ME homeowners’ guide to insulation services

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