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TRUSTED BY SHREWSBURY, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon113
    Verified insulation services reviews

Top-Rated Insulation pros in Shrewsbury - Updated Nov 2026

Avatar for McMahon Spray Foam, LLC
McMahon Spray Foam, LLC
4.6(
32
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I don’t know why anyone would hire anyone else. Anthony is courteous/responsive, knows insulation cold, was quick to provide estimates and service and is smart about his hires, with net results—great workmanship at a very fair price."
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Open Cell Spray Foam

+5

Response time1 day
123 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Complete Home Comfort
Complete Home Comfort
5.0(
14
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Shrewsbury, MA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We partner with utility-sponsored programs like Mass Save® Home Energy Services and Rhode Island Energy's EnergyWise Home Energy Services programs.\n

Basement Sills
Crawlspace Walls
Crawlspace Sills
Attic Floor
Attic Floor

+4

25 neighbors recently requested a quote
Avatar for Green Collar
Green Collar
4.6(
37
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"fantastic honest company with highly competent energy advisor and crew.They were efficient and cleaned up after the job.I did not have to lift a finger.Do yourself a favor and call them or send an email.You won't regret it."
Net and Blow
Ceiling net and blow
Truck in Driveway
Knee Wall Slope 2" Board
Attic Open Blow Cellulose

+2

Response time2 days
Response rate86%
49 neighbors recently requested a quote
Avatar for Green Collar
Green Collar
4.6(
37
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

Established in 2014, Green Collar is a leading energy efficiency solutions provider for businesses and homeowners. We help our clients conserve energy, improve comfort, and save money through increased energy efficiencies. \n \nWhat sets us apart is our unwavering commitment to exceptional quality, backed by over two decades of collective industry expertise within our team. Our comprehensive range of services includes home energy assessments, home insulation and weatherization, as well as HVAC services. We offer a complimentary home energy assessment to accurately pinpoint areas of inefficiency within your home. Subsequently, our experienced energy consultants will offer personalized recommendations to effectively address and resolve any identified issues.

New Construction
New Construction
New Construction
Attic and Knee wall Retro
Attic and Knee wall Retro

+2

1 neighbors recently requested a quote
Recommended by100%of homeowners
Custom Insulation Company, Inc.
3.6(
117
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 1985

Free estimates

Small jobs welcome

"Eric was very professional and punctual. He was very informative of my needs. His team was very efficient. Minor cosmetic issues were quickly resolved. Very happy with Custom Insulation Company. Highly recommended!"
Copper Gutters
Foam Insulation
Foam Insulation
Blown In Insulation
Ridgid Foam Board

+2

Response time3 days
145 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Clean Tech Construction, LLC
Clean Tech Construction, LLC
5.0(
13
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

[email protected] is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Gallery
27 neighbors recently requested a quote
Recommended by81%of homeowners
Sonart Construction Corp.
2.3(
7
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Shrewsbury, MA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

Avatar for EZinsul, Inc.
EZinsul, Inc.
4.6(
51
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Shrewsbury, MA and surrounding areas

In business since 2022

Free estimates

Credit card accepted

"Jacob and his team were great ! Everyone was super nice. I felt very comfortable in what I was told in regards to what needed to be done. After talking to many different insulation companies this was the only one that knew what I needed done and was able to do it at a great pirce. They managed to finish same day which was amazing. The results are so nice ! We didn't know what to expect as the end result since this is my first time dealing with insulation problems. But everything looks great !! I will definitely be going to them for any future projects. A million thanks to them ! I highly recommend these guys for your insulation needs. A trustworthy and hard working company."
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation

+7

Recommended by97%of homeowners
Avatar for Calnan's Energy Systems Inc.
Calnan's Energy Systems Inc.
4.8(
182
)
Blown-In Insulation - Install or Upgrade

Serving Shrewsbury, MA and surrounding areas

In business since 1980

Free estimates

Warranties offered

"Rob was a great communicator and his promptness and knowledge were one of the main reasons we went with him over a slightly lower estimate we got. His sons did a good job of doing the work we required, which was messy work, and they left the place in pretty good shape with just some leftover bits of insulation here and there. If I have any additional insulation needs, Calnan would be my first call."
Knee wall is prepped for new insulation to be installed
1st layer or 2 inch insulation board installed against the roofline after existing fiberglass is removed and knee wall vacuumed clean
After old insulation is removed, and the knee wall is air sealed, the new insulation is installed on the wall
4 inches of 2 inch insulation board installed and foamed, ready for final cap layer of 2 inch Thermax insulation board
Lastly, the Tyvek is installed over the new insulation

+21

Response time2 days
Response rate100%
Recommended by94%of homeowners
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Showing 1-10 of 78
Insulation FAQs, answered by experts

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

The cost to rent an insulation vacuum ranges between $250 and $350 per day. The price will increase if you choose to rent for additional days, but you may get a discounted daily rate if you rent it for a whole week, which could cost up to $1,000. Once you've removed the insulation and are ready to replace it, the cost to rent a blown-in insulation machine ranges between $100 and $500.

Mineral wool wraps are the most affordable and effective insulation for crawl space ducts. They are easy to cut, last for a long time, and healthier for humans. Meanwhile, fiberglass wraps are cheaper but more hazardous and difficult to handle. If you do choose to use a fiberglass wrap, make sure you are wearing long sleeves and wear proper protective gear.

While carpet over carpet may provide some additional insulation and soundproofing benefits, it's not as effective as other methods. Layering carpets can add a modest buffer against noise and temperature fluctuations, but it's limited compared to installing thicker carpet padding or using specialized soundproofing materials. For optimal floor insulation and soundproofing, consider alternative solutions tailored to your specific needs and budget, such as adding additional padding or soundproofing underlayments beneath the carpet.

If you have access to the foundation walls, adding spray foam insulation to your existing unfinished basement or crawl space is straightforward. Replacing existing insulation in your unfinished attic space is possible after removing the old insulation. However, spray foam insulating an existing wall after the drywall is in place isn’t possible unless you remove most of the drywall.

The Shrewsbury, MA homeowners’ guide to insulation services

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