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TRUSTED BY WALTHAM, MA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon188
    Verified insulation services reviews

Find Insulation pros in Waltham

Avatar for John P. Insulation
John P. Insulation
4.7(
23
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

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
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Waltham, MA and surrounding areas

Approved

Free estimates

Credit card accepted

Customers say: Super punctual

"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."
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
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Waltham, MA and surrounding areas

Approved

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

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
)
Blown-In Insulation - Install or Upgrade

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
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

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 Green Way Insulation, Inc.
Green Way Insulation, Inc.
4.0(
23
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

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
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

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
Custom Insulation Company, Inc.
3.6(
116
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+1 more

Serving Waltham, 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 time2 days
121 neighbors recently requested a quote
Recommended by88%of homeowners
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Showing 1-10 of 122
Insulation questions, answered by experts

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

The R-value is a rating that measures an insulation's thermal resistance—in other words, how well it insulates. A higher R-value provides more protection for your pipes, and all pipe insulation materials should have an R-value listed on the product description or label. Each insulation type has its own R-value, which typically falls between one and five for most pipe insulation. When making a selection, Energy.gov recommends choosing a pipe wrap that is at least one inch thick, and the International Code Council (ICC) suggests choosing a material with an R-value of at least 3.

Durable materials suited for climate include aluminum for coastal areas or composite wood in varying environments for durability and minimal upkeep.

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.

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

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.