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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon60
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in South Lancaster, MA

*The Angi rating for Insulation Service companies in South Lancaster, MA 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 South Lancaster, MA 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 November 02, 2025

Find Insulation pros in South Lancaster

Avatar for Insul-Kings

Insul-Kings

50 Boston Rd
4.21(
34
)
•Approved Pro

Insul-Kings

50 Boston Rd
4.21(
34
)
•Approved Pro
Customers say: Terrific value
204 local quotes requested
26 years of experience

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

Avatar for McLaughlin Weatherization

McLaughlin Weatherization

12 Twin Oaks Rd
4.82(
39
)
•Approved Pro

McLaughlin Weatherization

12 Twin Oaks Rd
4.82(
39
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
129 local quotes requested

Are you looking for a green environmentally friendly insulation company? Is your home cold and drafty? Do you want to save money on your home heating bills? McLaughlin Weatherization can help you resolve these problems. We install fire rated mold resistant programs available through your local utilities or Mass Save program. We can service your entire home insulation needs. From exterior walls to attic insulation we can do it all including air-sealing, venting, sound deadening or infrared scanning. McLaughlin Weatherization is your ideal choice for an array of effective insulation services. We use 100% borate fire-retardant material. Our cellulose insulation is environmentally friendly. We offer the highest content of recycled material of any insulation that is fire-, insect-, mold- and mildew-resistant. DBA McLaughlin and Williams Company Incorporated

"Professional crew; work was done quickly, with minimal disruption and fairly good cleanup. The house is older and the crew chief took reviewed the interior carefully to insure there would be no damage to the walls in the insulation process."

Katherine L on May 2022

Are you looking for a green environmentally friendly insulation company? Is your home cold and drafty? Do you want to save money on your home heating bills? McLaughlin Weatherization can help you resolve these problems. We install fire rated mold resistant programs available through your local utilities or Mass Save program. We can service your entire home insulation needs. From exterior walls to attic insulation we can do it all including air-sealing, venting, sound deadening or infrared scanning. McLaughlin Weatherization is your ideal choice for an array of effective insulation services. We use 100% borate fire-retardant material. Our cellulose insulation is environmentally friendly. We offer the highest content of recycled material of any insulation that is fire-, insect-, mold- and mildew-resistant. DBA McLaughlin and Williams Company Incorporated

"Professional crew; work was done quickly, with minimal disruption and fairly good cleanup. The house is older and the crew chief took reviewed the interior carefully to insure there would be no damage to the walls in the insulation process."

Katherine L on May 2022

Avatar for Wattson Home Solutions

Wattson Home Solutions

100 Lamartine St
5.00(
1
)

Wattson Home Solutions

100 Lamartine St
5.00(
1
)
20 years of experience

We are your local green expert when it comes to improving a home’s energy efficiency and comfort. We help residents by offering leading-edge home performance solutions that save energy and lower utility bills. Start with a no-cost Mass Save home energy assessment- From there we also install recommended insulation upgrades, ductless mini split/ heat pumps, as well as solar! We will assist with all rebates & incentives you qualify for.

We are your local green expert when it comes to improving a home’s energy efficiency and comfort. We help residents by offering leading-edge home performance solutions that save energy and lower utility bills. Start with a no-cost Mass Save home energy assessment- From there we also install recommended insulation upgrades, ductless mini split/ heat pumps, as well as solar! We will assist with all rebates & incentives you qualify for.

Avatar for Modern Energy

Modern Energy

24 Rockdale Street
5.00(
3
)

Modern Energy

24 Rockdale Street
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025

4 Season Shield Insulation

No reviews yet

4 Season Shield Insulation

No reviews yet
5 years of experience

4 Season Shield Insulation is a local Massachusetts company that specializes in all types of insulation (open and closed cell spray foam, fiberglass, mineral wool, blow-in cellulose). We are fully licensed and insured and available to work in the entire New England area. We offer free estimates for both residential and commercial services. Our team is ready to work for you, no matter the size of your job. A fully trained staff with the best products in the market.

4 Season Shield Insulation is a local Massachusetts company that specializes in all types of insulation (open and closed cell spray foam, fiberglass, mineral wool, blow-in cellulose). We are fully licensed and insured and available to work in the entire New England area. We offer free estimates for both residential and commercial services. Our team is ready to work for you, no matter the size of your job. A fully trained staff with the best products in the market.

Avatar for Honeydo4you Contractor

Honeydo4you Contractor

106 Stow Street
4.89(
37
)

Honeydo4you Contractor

106 Stow Street
4.89(
37
)
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

Painting Interior and Exterior, Tile, Kitchen and bathroom remodels and more. I am a general contractor striving to provide quality work at a fair price. I have great references and will give you a free quote. Call me for more info 5082944541

"Owner promised job would be done well and in a timely manner, and it was!"

JOANNE D on July 2023

Painting Interior and Exterior, Tile, Kitchen and bathroom remodels and more. I am a general contractor striving to provide quality work at a fair price. I have great references and will give you a free quote. Call me for more info 5082944541

"Owner promised job would be done well and in a timely manner, and it was!"

JOANNE D on July 2023

The Best Insulation Services Inc

86 Randall St
5.00(
2
)

The Best Insulation Services Inc

86 Randall St
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Foam Insulation, Fiberglass, Roxul, Cellulose...

"The service lasted over the course of several months due to the seasons and my building schedule. After meeting with several companies and feeling very uncomfortable getting random numbers with little or no supporting information I was referred to these folks. From the first call all were great. Met with the owner who came out, he explained the process, listened to my needs (RValue, stretch code, continuous coverage throughout) and my plans and schedule for building. They were very responsive and did the roof in the fall and the walls last week. They adjusted their schedule several times to fit mine, completed the project and cleaned up very well. The inspectors are impressed and I'm very happy with everything. I will use again and highly recommend for anyone who needs insulation to give them a call."

MICHAEL C on May 2018

Foam Insulation, Fiberglass, Roxul, Cellulose...

"The service lasted over the course of several months due to the seasons and my building schedule. After meeting with several companies and feeling very uncomfortable getting random numbers with little or no supporting information I was referred to these folks. From the first call all were great. Met with the owner who came out, he explained the process, listened to my needs (RValue, stretch code, continuous coverage throughout) and my plans and schedule for building. They were very responsive and did the roof in the fall and the walls last week. They adjusted their schedule several times to fit mine, completed the project and cleaned up very well. The inspectors are impressed and I'm very happy with everything. I will use again and highly recommend for anyone who needs insulation to give them a call."

MICHAEL C on May 2018

24/7 Insulation LLC

61 Court St
No reviews yet

24/7 Insulation LLC

61 Court St
No reviews yet
Free onsite estimate

24/7 Insulation, LLC is a spray foam insulation contractor serving the Whitinsville, MA area. Additional service areas - Boxford-Gloucester, Cohasset-Plymouth, Concord, Fitchburg-Leominster, Manchester-Nashua & Worcester Counties.

24/7 Insulation, LLC is a spray foam insulation contractor serving the Whitinsville, MA area. Additional service areas - Boxford-Gloucester, Cohasset-Plymouth, Concord, Fitchburg-Leominster, Manchester-Nashua & Worcester Counties.

Mass Green Insulation

36 Finnell Dr Unit 3-5
No reviews yet

Mass Green Insulation

36 Finnell Dr Unit 3-5
No reviews yet
13 years of experience

Over 100 contractors working to give world class service to our customers. We work with contractors as well as directly with homeowners. Subcontracting services available. We offer financing options for qualified applicants.

Over 100 contractors working to give world class service to our customers. We work with contractors as well as directly with homeowners. Subcontracting services available. We offer financing options for qualified applicants.

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Showing 1-10 of 202
Insulation questions, answered by experts

Insulating a detached garage won't reduce your home's heating or cooling bills—and insulating an attached garage will only have a small effect on your home's energy efficiency. However, insulating an attached garage can reduce the transfer of heating and cooling to and from the outdoors, which can reduce the amount of energy your home needs to stay comfortable. Also, having an insulated garage is just more pleasant. Balance the cost of insulating your garage with how you'll use the space to determine if the project is worth it.

One of the disadvantages of soffit vents is they can bleed warm air from the attic during winter, resulting in slightly higher energy bills and a colder house. There are ways to mitigate this effect—mostly just closing the vent in the fall. What’s most important is your attic is ventilated to some degree in the winter.

Pipes in your house can freeze after six hours or so if you lose power and temperatures are below freezing. You can prepare for potential power outages by winterizing your pipes with insulation. Also, whenever temperatures drop below 20 degrees Fahrenheit, turn your faucets on very low and leave them dripping until temperatures rise.

Expect your home insulation project to take between five and 12 hours to complete on average for batts or boards and two to five hours for spray foam or blown-in insulation. It might take longer if you need to remove your home’s existing insulation, you have a higher-than-average square footage, or accessibility is limited.

Mineral wool has an excellent life expectancy of up to 50 years, provided it's kept dry and free of pests. Compared to fiberglass, with a life span of 20 to 30 years, mineral wool stacks up well for long-term cost savings. Sheep wool maintains a similar life span to fiberglass, while estimates for hemp wool insulation life expectancies are all over the board, ranging anywhere from 20 to 100 years.

The South Lancaster, MA homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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