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Top-Rated Window and door contractors in Hanover - Updated Nov 2026

Avatar for Innovative Home Improvement
Innovative Home Improvement
5.0(
136
)
New Windows - 6 +New Windows - 3-5

Serving Hanover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Free estimates

Warranties offered

"From the first meeting to obtain a quote until the team left, every step of the process was professional. Paul came out personally to show us a sample window and provide us a quote on windows and make recommendations to replace our patio and storm door. Paul patiently answered all of questions & communicated with us up thru the installation. The team of installers were quick and professional, replacing 11 windows, a custom patio door, and storm door within a day. They cleaned up every piece of packaging, metal, etc and demonstrated how to use the new windows. I would recommend Innovative Home Improvements without reservation."
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+13

29 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for A.R. Glass Repairs
A.R. Glass Repairs
5.0(
22
)
Window Glass - Install or Replace

Serving Hanover, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Excellent work. The person who assisted us was gruff and no-nonsense, but professional. He asked that we send a photo of the window, which we did. He then came out and measured the window. He came back a couple of days later, and completed the work. The window looks fantastic, and we are very pleased with his work."
Response time1 day
Response rate100%
Recommended by85%of homeowners
Avatar for Unicorp Home Energy Services
Unicorp Home Energy Services
4.9(
630
)
New Windows - 6 +New Windows - 2 - For BusinessNew Windows - 3-5 - For Business+3 more

Serving Hanover, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"We were extremely pleased with the 20 new windows we just had installed by Pawel at Unicorp. The installation was very professional, they cleaned up each day and were very easy to have at the house. Brian Weil, the owner went above & beyond explaining the different types of windows, ultimately we wanted the look of the 1964 windows we were replacing with grilles on the inside & outside but just more efficient. We are very pleased with the end product. Both Brian and Pawel were very patient with me and the questions I had. I highly recommend calling Unicorp should you need new windows."
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+10

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Innovative Home Improvements
Innovative Home Improvements
4.9(
432
)
New Windows - 6 +New Windows - 3-5

Serving Hanover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Free estimates

Warranties offered

"I reached out to Paul to get a quote for new basement windows/door for my house. His company's estimate was stress free and used a local window manufacturer with an amazing reputation. Paul explained the different types of windows, the insulation and noise blocking qualities of each and provided guidance when I needed it. Once my selection of the windows was completed, I was provided an installation timeframe and signed the contract. The contract was clear and simple and I appreciated the explanations provided in it. When the windows arrived, Paul scheduled a day for the installers to come and replace the windows. They were careful to make sure it was on a day when it was not raining to keep the rain out of the house. As with all window and door installations, the installation quality matters as much as the windows. Pauls team of installers is a team he has been using for many years and they are absolutely excellent at what they do. The insulation and caulking as well as the functionality of the windows is perfect and I cannot recommend anyone more than Paul and his team at Innovative Home Improvements."
New Gentek-signature-Elite windows
Gentek-signature-elite inside pictures
Gorgeous custom Gentek-signature-elite specialty w
Energy efficient ProVia fiberglass doors
Replace kitchen door

+45

Response time9 hrs
6 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for DEX Window & Door Repair
DEX Window & Door Repair
5.0(
19
)
Door or Window Screens - Install or RepairDoors - RepairDoors - Repair - For Business+3 more

Serving Hanover, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"If you need a door repaired, hire Dexter. He was absolutely professional from start to finish, incredibly humble, and his pricing was more than fair. He diagnosed the issue quickly and fixed it right the first time without trying to upsell me on anything unnecessary. Honest, high-quality work is hard to come by—I will definitely be calling him again if I need anything else."
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Window Door Contractors FAQs, answered by experts

Yes, you can add a screen door to most door frames. The screen should be able to fit standard-size door frames, so unless you have an unusually sized door, you shouldn’t have an issue. Just make sure to properly measure the frame. When in doubt, it’s best to let a pro take care of this task for you so it’s installed correctly.

Typically every 10-15 years or whenever they show signs of wear and tear.

The screen on many screen doors is held in place by screen spline. Screen spline is typically a thin vinyl tubing that fits into the groove of the door’s frame and holds the screen in place. To install the spline on a screen door, you’ll need a spline roller—a tool that presses the spline and screen into the door’s narrow groove. Note that old spline can crack and break, so replacing your screens is a good time to replace the spline, too.

Egress windows require regular maintenance to ensure they function correctly. This includes cleaning the glass, inspecting the frame and well for debris, and making sure the cover or well drains properly. It is also important to check that the window sills and wells are watertight and to inspect and repair any damage to the window frame or seals to prevent leaks and maintain functionality.

You can add any type of window to a brick house, so long as the window has proper support. Windows with wider openings and windows in brick walls will need a lintel to support the extra weight above the window frame. A lintel is a support beam that distributes the weight from above evenly around the window.

The Hanover, MD homeowners’ guide to window and door contracting services

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