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TRUSTED BY DOVER, PA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon27
    Verified insulation services reviews

Find Insulation pros in Dover

Avatar for The Cozy Penguin Insulation Company
The Cozy Penguin Insulation Company
4.7(
60
)

Serving Dover, PA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"The work that Koala of Central Pa installed roof insulation at our church. The work was completed in a very professional manner. Work was done in a timely fashion."
Response time2 days
38 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Energy Smart Home Improvements, LLC
Energy Smart Home Improvements, LLC
4.6(
83
)

Serving Dover, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Small jobs welcome

"Very easy to work with. The owner himself came out to give me an estimate. Mark completed the actual insulation. He was quick and he did a great job cleaning up the area after doing the spray insulation. Highly recommend!"
 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 Dover, PA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
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 Tri-State Builders
Tri-State Builders
4.6(
104
)

Serving Dover, PA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Stephen and his team did a fabulous job of insulating a space behind a bedroom wall and adjacent bathroom wall that was completely uninsulated. We suffered through two cold winters that heaters couldn't solve in these rooms. Stephen evaluated the project efficiently and then oversaw the work. It was performed beautifully by the team and they cleaned up before leaving. Everything was immaculate. Most impressed with this company and this project manager."
 Kitchen
Barber Addition
Rowland Addition
Custom Home
Traska Addition

+36

Response time4 days
13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mavrix Construction LLC
Mavrix Construction LLC
5.0(
3
)

Serving Dover, 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.

Logo
77 neighbors recently requested a quote
Avatar for Orkin
Orkin
New to Angi

Serving Dover, PA and surrounding areas

Approved

In business since 1901

Free estimates

Warranties offered

Did you know that Orkin does Insulation? Our more than 100 years of pest control experience began in 1901 by then fourteen-year-old Otto Orkin. In that , we've become a leader Pest Control as well as an expert Home Insulation. Orkin - We can help energize your home. \n\n

Superior Insulation
4.9(
68
)

Serving Dover, 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 Q Insulation Contractors, Inc.
Q Insulation Contractors, Inc.
4.8(
25
)

Serving Dover, PA and surrounding areas

In business since 2020

Free estimates

"Came on time for our thorough estimate. Was able to squeeze me in the next day to insulate my completely uninsulated detached garage. Great work! Got videos to see the work even better!"
Response time2 days
Recommended by92%of homeowners
Showing 1-10 of 39
Insulation questions, answered by experts

A garage ceiling needs a vapor barrier if it’s a heated garage or if you’re installing insulation in the ceiling. Without a vapor barrier, you risk moisture issues and mold growth. If you have an unheated garage and don’t plan on installing insulation that could get wet and harbor mold, the ceiling doesn't need a vapor barrier.

Canned spray foam has an R-value of R-3.7 per inch. However, it’s not great for use as insulation. Also known as single-component spray foam, it doesn’t expand as much as two-part types that work for insulating the whole house. Save the canned foam for gaps around doors and windows.

Whether you should remove old insulation before blowing in new insulation depends on your particular situation. Fiberglass insulation attracts insects and mold over time, so if it has been decades since your last insulation upgrade, consider removing the old materials before placing the new ones. However, most types resist mold, insects, and mildew, so once you get the go-ahead from your contractor that your space is free from all three, feel free to install the new insulation directly on top of the pre-existing materials.

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.

If you’re moving wires, installing new wires, or installing new fixtures in the space you’re insulating, then you will need to hire a licensed electrician to do that portion of the job for you. However, if you just intend on replacing old insulation or adding new insulation over existing insulation, then you don’t need to hire one. Your insulation installer will work around wiring, fixtures, outlets, and switches, even if they’re installing fiberglass batts in the voids where wires run. However, you will need an electrician if you suspect a problem with your wiring during the insulation work.

The Dover, PA homeowners’ guide to insulation services

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