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Find Insulation pros in Westford

Avatar for John P. Insulation
John P. Insulation
4.7(
23
)

Serving Westford, MA and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"We had this company come to do insulation for our whole home - attic and walls (through Mass Save). Not only did they do what was in the original contract, but they also added insulation to our garage ceiling AND to an open wall that was being worked on for an unrelated home reno project! They did 3 days of work in 1 day & stayed late to vacuum and clean up. They were very professional, extremely efficient, and I love that it's a family operated company. Ivan, their office resource who helped book the appointment, was also a pleasure to work with throughout the process. We highly recommend using this company for any insulation needs."
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Attic Stair Cover build

+9

Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for McLaughlin Weatherization
McLaughlin Weatherization
4.8(
39
)

Serving Westford, MA and surrounding areas

Approved

Free estimates

Credit card accepted

Customers say: Super punctual

"The team from McLaughlin Weatherization, who completed the work from my Mass Save Program energy audit to install insulation in my attic was AWESOME! They were a team of 3, who ensured the job got done efficiently and well. Professional, courteous and personable! I was very pleased with how they entered my home, treated my home and me while in it and when they left they even brushed up the very last of any dirt they might have brought in. I cannot rave enough about how great the experience was because I was able to work downstairs and stay out of their way but they definitely went above and beyond in my opinion! I didn't know the front door would get a package of weather stripping too. So while that was nice, the guy in charge of the team of 3 not only removed the old to install the new, the front door closes properly now! I cannot thank you enough for this small act of kindness (even if it was fixed with the new trim) because I had been so worried about my kitties getting out one day because the latch would not catch to keep the door closed. Also, the senior member leading the team demonstrated his years of experience and knowledge and explained everything to me and answered all my questions. I highly recommend this company as a partner for Mass Save and I would personally pay them for any future work needed if not covered by Mass Save."
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+1

Response time2 days
22 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Coleman Spray Foam Inc
Coleman Spray Foam Inc
5.0(
53
)

Serving Westford, MA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"John and his team are extremely helpful and honest. I needed my ceiling insulated and they were able to fit me into their schedule quickly. John, Pedro, and Shant are professional and willing to answer any of your questions. Quality job, great price, and clean! Highly recommend."
Newton, MA
Dover, MA Basement
Newton, MA
Newton, MA
Lexington, MA

+2

Response time8 hrs
Response rate97%
Recommended by95%of homeowners
Avatar for Absolute Energy Solutions LLC
Absolute Energy Solutions LLC
4.9(
19
)

Serving Westford, MA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"We had a great experience with this insulation company. The crew members were very kind, professional, and hardworking throughout the project. They took the time to answer all of my questions while they were on site and made the whole process feel easy and stress-free. I was very pleased with the work they did and noticed a real difference in the way my house feels afterward. I would definitely recommend them to anyone considering insulation work for their home."
15 neighbors recently requested a quote
Avatar for Clean Tech Construction, LLC
Clean Tech Construction, LLC
5.0(
13
)

Serving Westford, MA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

Cleantechconstruction@mi.o 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.

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22 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for Clean Tech Construction, LLC
Clean Tech Construction, LLC
5.0(
13
)

Serving Westford, MA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Clean Tech Construction was terrific! The team arrived slightly before the scheduled time, removed the old, poorer quality insulation, installed new insulation, including areas that a previous company had not been able to reach, and cleaned up everything before they left for the day. When I initially contacted them about the work, they answered my phone calls within 15 minutes and continued to respond to any calls/questions quickly and politely. I would hire them again in a heartbeat."
Acushnet
Acushnet
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Acushnet

+1

Response time1 day
Response rate88%
27 neighbors recently requested a quote
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FAQs for insulation service projects in Westford, MA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

The Westford, 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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