*The Angi rating for Insulation Service companies in Dover, NH 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 Dover, NH 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 April 26, 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.
"These guys are excellent! From Ken, whom performed the estimate, to Jeremiah and Chaz setting appointment to Dave and his partner.. I'm sorry I forgot your name. All very professional and accommodating... Dave explained what he was doing and why. Made me very comfortable with his experience and confidence in his work. I would DEFINITELY recommend Insul-Kings to anyone needing blown insulation."
Timothy C on January 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.
"These guys are excellent! From Ken, whom performed the estimate, to Jeremiah and Chaz setting appointment to Dave and his partner.. I'm sorry I forgot your name. All very professional and accommodating... Dave explained what he was doing and why. Made me very comfortable with his experience and confidence in his work. I would DEFINITELY recommend Insul-Kings to anyone needing blown insulation."
Timothy C on January 2025
We have over 40 years experience with new and old homes barns, garages, buildings, whatever you need insulated! We offer many types of insulation including: fiber glass batting,blowing fiber glass, cellulose,spray foam,insulating pipe work, blown in blanket, dense packing. Serving all of MA and NH area *FREE ESTIMATES*
"Another 5 STAR review. Roland and Brett are excellent !! They have extremely high quality and are highly efficient. My wife and I have owned three homes. Renovated two. We have dealt with many, many contractors. Roland is one of the best. The pricing is great, the service is great and the people are great. We would hire Sav-On again in a heartbeat. We highly recommend them."
Victor F on August 2023
We have over 40 years experience with new and old homes barns, garages, buildings, whatever you need insulated! We offer many types of insulation including: fiber glass batting,blowing fiber glass, cellulose,spray foam,insulating pipe work, blown in blanket, dense packing. Serving all of MA and NH area *FREE ESTIMATES*
"Another 5 STAR review. Roland and Brett are excellent !! They have extremely high quality and are highly efficient. My wife and I have owned three homes. Renovated two. We have dealt with many, many contractors. Roland is one of the best. The pricing is great, the service is great and the people are great. We would hire Sav-On again in a heartbeat. We highly recommend them."
Victor F on August 2023
We offer construction services, including apartment reno, office buildouts, roofing, siding & more!
We offer construction services, including apartment reno, office buildouts, roofing, siding & more!
I run a small remodeling company. I do wood and tile flooring, Painting, siding, windows and doors. I also install high end appliances. ie. Built in refrigerators, double ovens,etc. I've been in the industry for close to 30 years now and have a vast knowledge of the trades. Did I mention I also do insulation.
I run a small remodeling company. I do wood and tile flooring, Painting, siding, windows and doors. I also install high end appliances. ie. Built in refrigerators, double ovens,etc. I've been in the industry for close to 30 years now and have a vast knowledge of the trades. Did I mention I also do insulation.
Hello! I'm Mike Paradis, founder of Ambient Insulations. 4 years of experience with residential and commercial insulation.
Hello! I'm Mike Paradis, founder of Ambient Insulations. 4 years of experience with residential and commercial insulation.
Insulating things
Insulating things
Insultech offers all of your insulation needs.let us work with you and we will figure out what best works for what you need done.we offer blown in insulation using fiberglass or cellulose. We offer regular batt insulation using fiberglass or mineral wool. We also offer spray foam insulation that is either open cell or closed cell. We offer quality,guaranteed work at the most competitive price that you will find. We will work with you every step of the way.we will leave your house just as clean If not cleaner than when we got there. We know that when we are finished with a job that not only will the customer be more than pleased but also with most jobs we can also guarantee that you will save a minimum of half of your old heating bill. Altho new to angi me and my partner who was also my mentor and the one that got me into this trade we have more than 70 years of experience and expertise.
Insultech offers all of your insulation needs.let us work with you and we will figure out what best works for what you need done.we offer blown in insulation using fiberglass or cellulose. We offer regular batt insulation using fiberglass or mineral wool. We also offer spray foam insulation that is either open cell or closed cell. We offer quality,guaranteed work at the most competitive price that you will find. We will work with you every step of the way.we will leave your house just as clean If not cleaner than when we got there. We know that when we are finished with a job that not only will the customer be more than pleased but also with most jobs we can also guarantee that you will save a minimum of half of your old heating bill. Altho new to angi me and my partner who was also my mentor and the one that got me into this trade we have more than 70 years of experience and expertise.
With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.
"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest. These guys know their stuff, couldnt be happier with my choice!"
Chris M on November 2022
With over 31 years of experience 603 Basement Solutions specializes in Basement Waterproofing, Crawlspace Moisture control, and Concrete foundation repair. When you hire 603 you can expect Courtesy, Professionalism, Honesty, Integrity and a whole team showing up with smiles. We can't wait to solve your problems.
"When looking at different companies to waterproof my basement prior to finishing it 603 was leaps and bounds better than the rest. These guys know their stuff, couldnt be happier with my choice!"
Chris M on November 2022
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.
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.
Servicing nearly all home and property needs. Offering free consultations, evaluations, recommendations, and estimates. Fully insured and licensed. Transferable 2-year work guarantee. From fertilization to full-service tree removal, landscape design and installation, out building design and construction, and whatever your property needs may be. From sealing your basement to flooring and finish work, custom design and installation, siding, roofing, chimney and nearly anyting your home may need interior or exterior. If you don't have the time, knowledge, tools, or physical capability to get the job done, please allow me to be your handyman. No job too big or too small.
Servicing nearly all home and property needs. Offering free consultations, evaluations, recommendations, and estimates. Fully insured and licensed. Transferable 2-year work guarantee. From fertilization to full-service tree removal, landscape design and installation, out building design and construction, and whatever your property needs may be. From sealing your basement to flooring and finish work, custom design and installation, siding, roofing, chimney and nearly anyting your home may need interior or exterior. If you don't have the time, knowledge, tools, or physical capability to get the job done, please allow me to be your handyman. No job too big or too small.
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