*The Angi rating for Insulation Service companies in Harpswell, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in Harpswell, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on January 05, 2026
Serving Harpswell, ME and surrounding areas
Free estimates
"David provided work in a timely and professional manner. David is dependable and did an excellent job with both insulation and a fencing job. Call him for what you need!!"
Serving Harpswell, ME and surrounding areas
In business since 2002
Free estimates
Emergency services offered
"Woke up to major water damage on a Sunday. I called Octagon and they were on site within 2 hours. They immediately set up to control the damage and handled everything with regard to my insurance claim. The staff were extremely professional and very pleasant. They arrived on time and kept me informed every step of the way. They clearly went above and beyond to make sure the job was done right. Their expertise is obvious and the caring they have for the customer is evident. Once I called them, all I had to do was wait till my house was dry again, they handled everything. would recommend Octagon with out any reservation! Cost of $2500 reported is full cost, I only paid the insurance deductible."
+2
Serving Harpswell, ME and surrounding areas
In business since 1999
Free estimates
Emergency services offered
"A great team. They not only did the work, they coordinated with floor refinishing crew and insulating crew. They also let us know when we had heating problems. They have more work to do for me; I certainly wouldn't hesitate to call on them in the future. This is a very responsible team. Highly recommended."
+24
Serving Harpswell, ME and surrounding areas
In business since 1971
Credit card accepted
"Roberto was the technician and he was very professional, polite, and personable. He inspected the rest of our system and told us things that needed to be changed or repaired. He showed me pictures of everything. Everything he told me about was accurate. He quoted me a price for R38 insulation , Some of our ducts were plastic and he recommended them to be changed. I agreed completely and didn't know they were plastic. I would have had them done the work but I had no price comparisons to make and besides I didn't have the money right then. So he just finished the vent cleaning and left his card. He did a great job on the vent cleaning and was happy with the work."
+2
Serving Harpswell, ME and surrounding areas
In business since 1997
Free estimates
Emergency services offered
"Dan Dumond and his crew were a plasure to work with and we are very pleased with the work they did on our roof. We would highly recommend them."
Serving Harpswell, ME and surrounding areas
In business since 2016
Free estimates
Full service general contractor. Specializing in kitchen and bathroom remodels as well as general remodeling, new construction, framing, drywall, cabinet installation & millwork, flooring, decks, windows & door and crown molding. In house licensed electricians and plumbers.
+40
Serving Harpswell, ME and surrounding areas
In business since 2000
Free estimates
Emergency services offered
General Contracting / Home Remodeling Pro's. From the ground up inside and out we have you covered. We have the Best customer service and Best Quality workman In Maine and New Hampshire. If your are looking for a full service company then contact us today! FULL SCALE Home, Business, Condo, 3 unit , 4 unit and above Remodel inside and out. We can give you itimized quotes after a in home meeting in under 2 day's. "Interior & Exterior" Prices by Hr or by the job We have the right guys for any job Free Estimates Locally owned & operated
+32
Serving Harpswell, ME and surrounding areas
In business since 2010
Free estimates
Emergency services offered
We are a small family owned home improvement company where the owner is on the job! We service southern Maine and seacoast NH.
Serving Harpswell, ME and surrounding areas
In business since 2006
Free estimates
Owner-operated. cost is determined by the job. No travel charges. No written contract charges changed without written change order agreed to by customer. May contact through email.
+6
Serving Harpswell, ME and surrounding areas
In business since 1994
Free estimates
Emergency services offered
Raymond Marshall of Marshall's Modern Homes is a general contractor who has been in business for 20 years. Marshall's Modern Homes prides itself on not having to sub-contract much of our work out so that the work is completed in a timely fashion with less scheduling conflicts and enhanced quality of work. We can clear your lot, do the foundation work, frame and finish your new home; or we can remodel your existing home by adding on to it. We can fix that leaking roof and repair the siding too. There is never any charge for estimates or travel fees.
+7
When choosing a professional insulation installer, consider asking these questions to determine the best fit.
Will you address air leaks in my house?
Can you provide an R-value (heat resistance) fact sheet?
What kind of insulation will work best for my home?
How do you handle signs of a water leak?
Are you licensed and insured?
Can you provide customer references?
The best type of insulation for your home depends on what you need, so the answer will depend on your specific situation. If you’re building a house, structural panels are easy to install during the building process in addition to being the most energy efficient type. If you live in a warm climate, reflective insulation may benefit you more as it costs less than other insulation types. And for standard attics, loose-fill, spray foam, or blown-in insulation work well.
If you plan to heat or cool your garage, you’ll need to insulate the garage ceiling. Insulating your garage ceiling will make your garage much more energy efficient and save on heating and cooling costs. Not only does insulation make your garage more energy efficient, it helps reduce noise and can extend the life of your garage roof. You can use fiberglass, cellulose, mineral wool, or spray foam insulation for this project.
In some cases, you may not have enough insulation to properly regulate your home’s temperature. Watch for a few signs your home needs more insulation, such as:
High heating and cooling bills
Uncomfortable room temperatures
Ice dams on the edge of your roof
Roof leaks
Cold floors and walls
Freezing pipes
Temperature fluctuations
Visibly low insulation
Noise problems
Pest problems
On average, insulating an attic costs about $2,500, ranging from $1,500 to $3,500, depending on the insulation type, amount, and your attic’s accessibility. Additional cost factors include sealing air leaks, removal or replacement of insulation, and inspections. Types of insulation include:
Blown-in: $1–$4 per square foot
Spray foam: $2–$5 per square foot
Batt: $2–$4 per square foot
Structural insulated panels: $4–$7 per square foot
Loose-fill: $2–$5 per square foot
Reflective: $0.50–$1.50 per square foot
From average costs to expert advice, get all the answers you need to get your job done.
How much does it cost to insulate a wall? This guide breaks down the associated costs and variables to consider when setting your project budget.
Find out the average pipe insulation cost, including material and labor prices, plus tips to save money on your project.
Your home's ceiling insulation cost will depend on several factors, including the project size, the type of insulation you use, and the R-value.
There are 10 types of insulation you can use for your home. Read this guide to discover which insulation types could be best for the job.
Learn about non fiberglass insulation alternatives, including cellulose, soy, wool, blown-in, spray foam, cotton insulations, radiant barriers, and new materials.
How much does insulation save on energy bills? It depends on where you live and the type of insulation you install.
