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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon461
    Verified window services reviews

Top-Rated Window pros in Clarksburg - Updated Nov 2026

Avatar for Zen Windows of Washington DC
Zen Windows of Washington DC
5.0(
134
)
New Windows - 6 +New Windows - 3-5New Windows - Multiple

Serving Clarksburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1997

Free estimates

Warranties offered

"Zen Windows advertises that they make things easy, and that they do. Zen windows doesn’t just make things easy, they have quality products, reasonable prices and exceptional service. We just had an entry door replaced and everyone we worked with was great. While they don’t push you into buying any products, they do go out of the way to help you make the right decisions. Everything went exactly as they told us, the installers were top notch and the finished product looks great. Without hesitation, we would highly recommend Zen Windows to anyone looking for doors or windows."
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+27

Response time2 days
17 neighbors recently requested a quote
Recommended by91%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 Clarksburg, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I am very fussy and frequently critical, yet I have only the best things to say about Unicorp window replacement. The owner came to my home - on time - to explain all the options and costs for replacing my windows. It didn't feel like a sales pitch, but more like a discussion of what was best for my home. Unicorp is a local company and makes their own windows, so I knew if there was a problem, there would be someone nearby to call. My windows were installed on time and the crew was very professional. They are very hard workers; they didn't even take a lunch break. I was assured that my new windows would not let the cold air in, as my old windows did. I'll have to wait for winter to test this out, but I have confidence that since these windows were custom-made for me, they fit more tightly. It has been a pleasure to find a local company that has an excellent product, is honest, and reasonably priced."
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+10

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for VIRGINIA WINDOW CLEANERS INC
VIRGINIA WINDOW CLEANERS INC
4.6(
76
)
Window Cleaning

Serving Clarksburg, MD and surrounding areas

Approved

In business since 1963

Free estimates

Credit card accepted

"All went well. The gentleman who was doing the cleaning arrived on time, reviewed everything that was to be done and updated the quote to reflect the total number of windows involved. I also asked that he clean the window sills. He started the cleaning and completed the work in less than 3 hours. All nicely done."
Response time1 day
9 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for A.R. Glass Repairs
A.R. Glass Repairs
5.0(
23
)
Window Glass - Install or Replace

Serving Clarksburg, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"I was very happy with response from Eddis. He gave me a quote upfront and followed it up with an invoice via email. I paid him half at the beginning and another half when he came back to install the window. He was very professional and respectful of my house. I will definitely use A.R. Glass again if I have window repair needs."
Response time1 day
Response rate100%
Recommended by81%of homeowners
Avatar for A Clear View Window Cleaning, LLC
A Clear View Window Cleaning, LLC
5.0(
22
)
Window Cleaning

Serving Clarksburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Credit card accepted

"Windows and sliding doors cleaning were great. Power wash included gutters which really needed it! Small issue of a broken flood bulb was resolved the next day and the resolution was above and beyond expectations. Will using them again on the spring!"
Response time2 days
19 neighbors recently requested a quote
Recommended by90%of homeowners
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Windows FAQs, answered by experts

Generally speaking, you should clean your windows and any associated fixtures and treatments every six months. Otherwise, clean them as needed to keep everything running smoothly. If you live in a part of the country with especially hard water, you may have to clean them three or four times per year, and the same goes for areas where insects, pollen, dirt, and other debris can soil your windows and potentially cause issues with the moving parts.

Consider adding sash locks to your windows to fix drafty windows if you don't currently have any. Sash locks in double-hung and single-hung windows help to create a tight seal when windows are shut.

Yes, replacing windows can boost your home’s resale value by improving its curb appeal, energy efficiency, and comfort. The return on investment (ROI) varies depending on the types of windows you install, but most homeowners see an ROI of around 60% to 70% of the cost of the window installation, according to the Remodeling 2024 Cost vs. Value Report. 

Window security film won’t prevent break-ins or stop your window from shattering from impact during extreme weather like hurricanes or tornadoes. However, applying security film is relatively inexpensive, and it can make breaking into your home significantly harder—often hard enough to deter burglars entirely—and keep your window from shattering on your floor after impact. For these reasons, window security film is often a worthwhile investment that helps protect your property.

Yes, every window needs a lintel. The lintel is necessary for redistributing the load above the window to the walls around the window. Windows aren’t meant to support a load, so lintels are an important part of a window installation. If you go to replace your windows and discover there are no lintels, you may need a window company or structural engineer to install lintels for your new windows.

The Clarksburg, MD homeowners’ guide to window services

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