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4.7

(188 reviews)

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

Serving Waltham, MA and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"I would highly recommend John P. Insulation. I got three quotes for my insulation job and they were the most professional during the estimate. They provided pictures of what they were going to do. They fully explained the job and what I should expect. The quote was fast and equal or lass than the others. On the installation day, they arrived when they said they would, covered my floors and completed the work exactly as they said they would. I had them foam seal, blow in insulation, install soffit vents and vent a bathroom fan. You will not be disappointed in the quality."
Step 1
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Attic Stair Cover build

+9

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

Serving Waltham, MA and surrounding areas

Approved

Free estimates

Credit card accepted

Customers say: Super punctual

"We hired McLaughlin & Williams through the MassSave program, which had performed an energy saving audit for our house and made a clear checklist of work to be done that we could confirm with the contractors. We scheduled the job months in advance, but they were flexible when we needed to reschedule at relatively short notice. Jay and his team showed up early the first day, and clearly laid out the work they were going to do, and why. When weather and scheduling issues prevented work on the second day, they sent a double team on the third to make sure everything got done within the scheduled time. In general, the workers took good care. The exterior siding that was removed for injection was cleanly replaced, though some shingles that were already damaged or waterlogged were a little worse off. Despite all the dust that comes with blown cellulose, there were only a few traces inside. They also made sure our cats didn't get out. During the course of the job, they also found that there was already some wall insulation in one section of our house, and only charged us for the work done."
Additional Photos
Additional Photos
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Additional Photos

+1

Response time2 days
22 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for EZinsul, Inc.
EZinsul, Inc.
4.6(
51
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"EZ insul did a great job removing old fiberglass under an addition of our home. Due to rodents we needed this removed and replaced swiftly. Jake communicated quickly and effectively. This allowed us to continue with our other projects. Additionally the EZ insul team rolled out drop cloths to keep everything clean and were very respectful of my home."
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation
Fiberglass Insulation

+7

38 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Calnan's Energy Systems Inc.
Calnan's Energy Systems Inc.
4.8(
182
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1980

Free estimates

Warranties offered

"I hired Rob to add insulation to my attic. He and his team were extremely professional and thorough. The work was done in a timely manner and completed as promised. I would hire him again."
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 time4 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Coleman Spray Foam Inc
Coleman Spray Foam Inc
5.0(
53
)

Serving Waltham, 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 Insul-Kings
Insul-Kings
4.2(
38
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"We got attic insulation through MassSave -- Fast, efficient, professional service. Looking forward to energy savings in the years to come."
Blower Door
Truck
Retrofitting Cellulose
Response time2 days
Response rate100%
28 neighbors recently requested a quote
Avatar for Green Way Insulation, Inc.
Green Way Insulation, Inc.
4.0(
23
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"I highly recommend Green Way. The folks from Green Way were professional and they delivered high quality work at a great price. The work involved applying foam to exposed roof deck in the attic, and applying blow-in insulation between unexposed roof deck the interior walls. I'm very pleased with the outcome."
Insulation work.
Insulation work.
Insulation work
Insulation work
Insulation work.

+9

Response time2 days
Response rate89%
48 neighbors recently requested a quote
Avatar for Complete Home Comfort
Complete Home Comfort
5.0(
9
)

Serving Waltham, MA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

We pride our company on reliability, great communication,\nintegrity, and quality work. We are experts in our trade and will do our best\nto keep you as educated as we can on your particular task or project. We look\nforward 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

5 neighbors recently requested a quote
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Insulation questions, answered by experts

DIY insulation installation is feasible, particularly for basic rolls or batts, if you have the right protective gear and knowledge. However, hiring a professional ensures even, full coverage for maximum efficiency.

Sometimes you may be able to leave the bags with your regular trash. However, that’s not always the case. Call your local waste management prior to starting the removal and ask about the proper ways to recycle or dispose of removed insulation. In many cases, your town or municipality has a designated dumpster for building waste.

At a minimum, blown-in insulation lasts 20 to 30 years. Cellulose and sheep’s wool come from natural materials, so they likely max out at around 30 years. Fiberglass and rockwool feature artificial materials that boast lengthy lifespans, up to 50 years, or even longer in some cases. As always, this timeline assumes you don’t run into any issues, such as flooding or mold, that shorten the lifespan.

Installing new insulation in a home is worthwhile if your existing insulation is old and has lost some of its insulative capability or if you don’t have insulation installed already. Installing new insulation will boost your home’s energy efficiency, which can reduce your heating and cooling bills and save money on HVAC repair and maintenance in the long run. New insulation also keeps your living space more comfortable, so you and your family will benefit from the work as well. Finally, installing new insulation boosts your home value, making it especially worthwhile if you plan to sell.

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

The Waltham, MA homeowners’ guide to insulation services

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