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4.5

(23 reviews)

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Avatar for Energy Smart Home Improvements, LLC
Energy Smart Home Improvements, LLC
4.6(
83
)

Serving Cornwall, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Small jobs welcome

"Project: Install Foam insulation Upgrade Blown in insulation Really happy we had this job done by Energy Smart. House feels toasty and will reduce heating costs. Whole experience 5 STARS Thanks Energy Smart"
 Air Leakage in your Home
 Blower door test to quantify air leakage
 Air infiltration through recessed light
 Duct leakage testing
 Attic air sealing

+6

Response time2 days
36 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)

Serving Cornwall, PA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"These guys were professional, on time and communicated very well... I would recommend this company to you for all your Spray Foam Insulation needs..."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
125 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Mavrix Construction LLC
Mavrix Construction LLC
5.0(
3
)

Serving Cornwall, PA and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

At Mavrix Construction, we believe hiring a contractor should be stress-free. We specialize in professional spray foam insulation across Pennsylvania, managing every detail of your project from first call to final walkthrough.\n\nWe answer our phones. We show up when we say we will. We communicate every step of the way. And we don't consider a job finished until you're satisfied.\n\nOur commitment is simple — competitive pricing, quality work, and the kind of customer service that's rare in the trades industry.\n\nWhen you choose Mavrix, you're choosing a team that treats your property like our own.

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77 neighbors recently requested a quote
Avatar for Iron Valley Spray Foam LLC
Iron Valley Spray Foam LLC
New to Angi

Serving Cornwall, PA and surrounding areas

Approved

Free estimates

Offers commercial services

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience.\nYou will find us to be competitively priced with close attention to the details.\nOur reputation is based on service, safety, and quality, regardless of how large or small the job.\nWe look forward to building a lasting relationship and guarantee your satisfaction!\n

4 neighbors recently requested a quote
Superior Insulation
4.9(
68
)

Serving Cornwall, PA and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"I communicated with Ron directly and he was determined to solve our insulation problems. He had to remove drywall in our entranceway and add in insulation where there were large gaps and air was getting in. He had a worker drywall and patch up the wall. The drywall worker did an amazing job! 
Ron also fixed an ongoing issue we had in our garage ceiling that was causing our living room floor to be cold and drafty. He worked around our schedule and made multiple visits to our home to fix the issue. We are happy customers and happy to say that the problem is fixed. We were very pleased with Ron and his company and do recommend him highly.
"
Recommended by95%of homeowners
Avatar for Air-Tight, LLC
Air-Tight, LLC
4.7(
16
)

Serving Cornwall, PA and surrounding areas

In business since 2008

"I contacted six companies for estimates to remove attic insulation, air seal and sanitize the attic, and blow in new insulation to R49 specs. Air-Tight's estimate was in the middle of the pack. Justin Wolfe, owner and CEO of Air-Tight LLC, gave me an estimate over the phone, answered every one of my follow up questions, and scheduled my work within the week. He stopped by at the beginning and end of the job. The crew did exactly what he said theyâ d do and were very mindful of my property. My neighbors commented on how nice they left the area. He even sealed an area under my steps and at the back of my home where Iâ d seen chipmunks enter and had an opportunity to sell more work when I asked him to check the attic above my garage but said I didnâ t need it and stayed with his original estimate. I recommend Air-Tight LLC without hesitation and am thankful I chose them."
BONUS ROOM ABOVE GARAGE
FULL CUT 2X4 INSULATION
VAULTED CEILNG
VAULTED CEILING
SLOPED CEILING

+2

Response time4 days
Recommended by93%of homeowners
Avatar for Bullseye Garage Doors & Insulation
Bullseye Garage Doors & Insulation
5.0(
9
)

Serving Cornwall, PA and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"They were honest. They came on time and their prices were reasonable. They went out of their way to help me and were so accommodating. They vacuumed and cleaned up and used foot protection to keep our house clean."
Avante Glass Door
Ben, owner of Bullseye Garage
Our state of the art trucks are fully loaded and ready to handle any of your garage door needs
Canyon Ridge Elements - Woodgrain Overlay
Bridgeport Steel - Wood Grain Overlay

+1

Recommended by33%of homeowners
Showing 1-10 of 37
Insulation questions, answered by experts

If you plan to heat or cool your garage, you’ll need to insulate the garage ceiling. Insulating your garage ceiling will make your garage much more energy efficient and save on heating and cooling costs. Not only does insulation make your garage more energy efficient, it helps reduce noise and can extend the life of your garage roof. You can use fiberglass, cellulose, mineral wool, or spray foam insulation for this project.

To keep cold out, look for treatments that sit close to the window frame and are made from thick, insulating materials. Thermal curtains, cellular shades, window quilts, and insulated shutters can all help retain heat. Layering window treatments, like pairing lined curtains with cellular shades, can provide even better insulation by further reducing drafts and heat transfer.

When temperatures are too cold, it can keep ice from melting, and products like ice melt and rock salt are ineffective. Water turns to ice in temperatures below 32 degrees Fahrenheit. Ice melts on its own when temperatures reach above 32 degrees Fahrenheit. 

Ice melt loses effectiveness in temperatures below -25 degrees Fahrenheit, and rock salt works in temperatures 5 degrees Fahrenheit and warmer.

If you’re using faced insulation with paper, face the paper toward the inside of the room during the installation process. 

A good way to remember this is that the paper should face the “warm side” as it’s the vapor barrier, meaning it should face toward where the heat will be coming from.

There are two reasons why cellulose insulation repels rodents (and insects). First, the insulation has been treated with boric acid, which is a natural pest-repellent. In addition, the loose-fill style of cellulose creates less-than-ideal conditions for mice and other rodents to nest and burrow, helping to keep them at bay.

The Cornwall, PA homeowners’ guide to insulation services

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