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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

"Called them last week. Told them I had an emergency in that a window just cracked and was putting house up for sale.  The estimator who came told me it would be weeks before they could put me in the schedule but when I called that afternoon I was told we will do it as soon as we can.

I need all told 6 window panes replaced.  The cost was very fair and they came within a day.  The fellow who came (Brian) was very nice, left a clean room and did a nice job,

I went to put on some weatherstripping over a gap in the frame and saw one of the window panes was not quite affixed in a corner (slightly pulling away) I called and Brian came right back over and explained it took time for the putty to dry. I did nto know that (obviously ((*_*)) and felt a little silly calling him back but he was fine with it, apologized said probably should have explained that but he was glad I called since I had the concern,

I would use them again in, as they say, a New York minute."
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+53

5 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for ARDMOR, Inc.
ARDMOR, Inc.
4.3(
310
)
New Windows - 6 +Window Glass - Install or ReplaceNew Windows - 2+1 more

Serving Frederick, PA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"I recommend Ardmor for your window needs. Whether you need new windows or repairs Ardmore was professional, knowledgeable, and reasonably priced. My service guy Todd was outstanding and a pleasure to deal with. So definitely check them out for your window and door needs."
Casement window sash before repair
Sliding Patio Door Sash Before
Sliding Patio Door Sash Rotted
Casement window sash in process of repair
Sliding Patio Door Sash After

+44

Response time6 hrs
4 neighbors recently requested a quote
Recommended by96%of homeowners
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 Power Home Remodeling
Power Home Remodeling
4.3(
6,546
)
New Windows - 6 +New Windows - 3-5

Serving Frederick, PA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"A wonderful experience all around! We had 15 windows and a sliding glass door replaced. Our Salesperson, Harlan, was very professional and explained the benefits of the new windows and all about Power as a company. The installers arrived on time and completed the entire job in a day! Everything was installed perfectly and the crew was courteous and cleaned up after themselves. Erin came to visit the next day to make sure everything was up to their standards and addressed any questions we had. Most certainly the best experience we've ever had with a home contractor. Highly Recommend!"
Double Hung & Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung
Double-Hung Window

+24

1632 neighbors recently requested a quote
Recommended by85%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

Pet-resistant, vinyl-coated polyester is one of the strongest window screen materials available, with some manufacturers touting a 7x increase in strength compared to standard fiberglass screens. Stainless steel security screens are also extremely strong, but they’re not suitable for coastal areas due to the risk of corrosion from salty sea air. If sea air isn’t a concern, stainless steel is extremely tough.

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.

A screened-in porch requires maintenance to keep the screens clean and in good shape, and you may have to do some screen repair or replacement from time to time. A screen porch isn’t an all-season porch, so the weather can get in, including wind and rain.

There are many ways to customize screens, including customizing frame colors and mesh styles to complement your home’s aesthetic.

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.

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.