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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon124
    Verified window and door contracting services reviews

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

Avatar for ARDMOR Windows & Doors
ARDMOR Windows & Doors
4.7(
145
)
New Windows - 3-5New Windows - 6 +Doors (Exterior) - Install or Replace+18 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Recently we hired Ardmore to replace the glass in 2 of our skylights and install a new storm door. Other than rain delays the skylights were installed in less than 2 hours as Ardmore sent 2 crews for the installation. They even came inside to vacuum any debris that might have fallen into the house during the installation. (5 out of 5). The installation of the storm doors was different. It took over 10 hours for 2 men to finish the installation which I felt was excessive and felt they didn't do the installation correctly. The difference between a good company and a better company is how well they fix a problem and to this point they are doing a better job. When I called to complain the scheduler immediately suggested they send out someone to inspect the work and within 3 days someone came out and fixed 2 out of the 3 problems and said someone would be calling me and ordering a replacement part to fix the 3rd problem"
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+65

17 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Alderfer Glass Co.
Alderfer Glass Co.
4.8(
71
)
Window Glass - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

In business since 1961

Free estimates

Warranties offered

"They came out quickly and he did a nice job repairing the windows. The price certainly seemed fair to me although I didn't price with anybody else because it was kind of an emergency situation. The fellow who came to give me an estimate told me it would take weeks for them to do it. I had to clean up my house for sale on Thursday and I needed this done. When I called the company and said that I'm in an emergency, they said they can get here the next day. They came within a day. I went upstairs and there was a gap in one of my windows so I went to weather strip it and I noticed one of the paint seemed to be loose in an area. I called immediately and the guy came right back and explained to me that it takes a while for the putty to set and what I was seeing was normal, etc. I felt kind of stupid calling them and he said he should have explained it to me and said he was very sorry. He said they rather I call them now than not call them. I was very impressed with them. I would use them in a millisecond again."
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+53

5 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Earth Smart Remodeling
Earth Smart Remodeling
4.6(
73
)
New Windows - 6 +New Windows - 3-5New Windows - 2+5 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"We were very happy with this company. Felt pricing was very fair, and unlike other contractors, were not pushy at all. We have close to 35 windows in our home, and split up the installations into 3 separate times. Installers were great! And we love our new windows!"
After
After
After
After
Black Window Project

+59

Response time1 day
Response rate100%
41 neighbors recently requested a quote
Avatar for The Flying Locksmiths of Greater Philadelphia
The Flying Locksmiths of Greater Philadelphia
4.5(
64
)
Doors - Repair - For BusinessDoors (Exterior) - Install or Replace - For BusinessDoors (Interior) - Install or Replace - For Business+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"Flying Locksmiths came out and replaced my exterior locks on 2 doors at my new home. They were prompt, scheduled when convenient for me, and completed the job quickly - in far less time and effort that it would have taken me. Would definitely hire them again if needed."
TFL_1
TFL Technicians
TFL_2
TFL Roots
TFL_3

+10

Response time1 day
20 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
5.0(
229
)
New Windows - 2New Windows - 3-5New Windows - 6 +

Serving Frederick, PA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Ryan was very personable and enjoyable to have a conversation with. He really knows how to connect with people. The crew was very fast and the windows look amazing. Next project is doors and can?t wait for home genius to do that!"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+78

74 neighbors recently requested a quote
Recommended by8%of homeowners
Avatar for RMD Glass & Glazing
RMD Glass & Glazing
5.0(
14
)
Window Glass - Install or Replace

Serving Frederick, PA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Rob was personable, professional and prompt! He was able to seamlessly repair a custom window and even matched the tint. You are unable to tell it was repaired. His prices are very fair, and competitive. Would recommend him to anyone looking for window repair and other glass services"
Seal-Failed Window
Seal-Failed Patio Door Glass Replacement
Response time3 days
2 neighbors recently requested a quote
Recommended by81%of homeowners
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Window Door Contractors FAQs, answered by experts

If your door has interchangeable inserts, you’ll likely want to swap the glass out for a screen during the summer months. The process to do so will vary by door, but you’ll follow these general steps: First, use a flathead screwdriver to pop out the retainer strips—the plastic strips running down both long (and sometimes all four) sides of the door. Then gently pull them out by hand. Carefully remove the glass insert from the door and replace it with the screen. Finally, push the plastic retainer strips back into place, working from top to bottom.

The cost of a window repair varies significantly depending on which part is damaged. Here is a breakdown of common repairs and their estimated costs:

  • Broken seal or fogginess between panes: $70–$245

  • Cracked pane: $40–$100

  • Broken glass: $200–$2,000

  • Sash, seal, or track repair: $200–$600

  • Latch or hardware issues: $75–$200

  • Broken window frame: $175–$1,000

  • Window screen replacement: $140–$480

Yes, adding windows adds value to a brick house. Homeowners don’t shy away from more natural light and an opportunity to get fresh air. Adding a window is particularly beneficial if you live in an area with good weather for much of the year or if your home has a nice view. Keep in mind that many older brick homes have historic wood windows that add to the charm of the house. When you install a new window in a brick house, you’ll want to find one that matches the aesthetic of the existing windows.

While windows increase a home’s value, how much they increase it can vary. It depends on the age of the home and the type of windows. You can expect about 70% to 85% return on investment (ROI) when adding a window to your home.

Most windows last for 15 to 30 years, depending on the frame material and the glass quality, but most will require repairs during that time. Windows gradually lose efficiency, so it’s usually best to have a window repair technician inspect and service your windows every five to 10 years. You should also repair your windows if you experience the following:

  • Leaks

  • Drafts

  • Difficulty opening or closing

  • Sudden increases in heating and cooling bills

  • Outdoor noise becomes more audible

  • Signs of physical damage

Installing a basement window generally takes a few hours, assuming there are no structural issues you need to resolve first. If you’re a novice DIYer, the project could take longer; on the flip side, a licensed and trained window contractor may be able to replace multiple basement windows in the time it takes a homeowner to replace one.

The Frederick, PA homeowners’ guide to window and door contracting services

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