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TRUSTED BY DULLES, VA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon147
    Verified window services reviews

Top-Rated Window pros in Dulles - Updated Nov 2026

Avatar for Clifton Contracting
Clifton Contracting
4.8(
42
)
Egress Window - Install

Serving Dulles, VA and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"I highly recommend Clifton Contracting. The owner and all his employees are great to work with and did an excellent job installing my egress window. They even worked with me to take care of some other home to-do's on the fly. I would happily use them again."
1 neighbors recently requested a quote
Recommended by100%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 Dulles, VA and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"We just had Unicorp install new windows throughout our entire house. The window quality is excellent and the installation went very well. We were replacing 55 years old windows - and were very happy with the entire process, from selection, exterior color choices, and finally installation."
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+10

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

Serving Dulles, VA and surrounding areas

Approved

In business since 1963

Free estimates

Credit card accepted

"This company was thorough, professional and punctual. The gentlemen doing the work were friendly, explained everything in advance and did exactly what they said they would do - spotless windows, sills and screens, inside and out!! I would DEFINITELY recommend them for anyone's window cleaning needs!! A+++"
Response time1 day
10 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Windows On Washington, Ltd.
Windows On Washington, Ltd.
4.5(
57
)
New Windows - 6 +New Windows - 3-5

Serving Dulles, VA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"How wonderful my most lovely windows are from Windows on Washington & their installation team was brilliant at keeping all my furnishings covered. They were on time, efficient & most polite. I highly recommend them."
 Arch top tilt and turn
 Decra Shake XD
Picture window with arch in Chantilly VA
 Arch top tilt and turn
 Decra Villa Tile

+22

Response time7 hrs
4 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for Glass & Window Solutions
Glass & Window Solutions
4.8(
63
)
Door or Window Screens - Install or RepairWindow Frame - RepairWindow Glass - Install or Replace

Serving Dulles, VA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I originally needed a three-panel window fixed since it was loose from the frame. About 10min after I submitted the request on Angi's, Gilberto called me and said he could stop by since he was in the area and at the end of his day. He was able to make a fix on the spot and addressed some dirt/uncleanliness in the window frame from the previous owner. I then asked if he could come out and clean all the windows/frames and his price and availability was more than reasonable. Gilberto and his team came out the next week and spent several hard hours cleaning. Just recently he returned with the window screens that needed repair and washing. His last service for us was spot caulking/sealing the exterior window frames where needed. I highly recommend Gilberto and his service. He was professional, prompt, great at communicating what servicing was needed or wasn't, and the work and price was top notch."
Response time1 day
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for A.R. Glass Repairs
A.R. Glass Repairs
5.0(
22
)
Window Glass - Install or Replace

Serving Dulles, VA 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 by85%of homeowners
Avatar for Metro Windows & Glass Repair, LLC
Metro Windows & Glass Repair, LLC
4.4(
38
)
Window Glass - Install or Replace

Serving Dulles, VA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"I had new glass installed in a patio door, a three window bay with floor to ceiling glass, and a front window. All were custom wood windows that were old. Metro did an outstanding job. They had a competitive quote. They were professional and friendly. They cleaned up after the work. My wife was happy. All good. High recommend."
OVERSIZED BROKEN GLASS
EMERGENCY BOARD UP
FIRST LOOK
BEFORE
AFTER INSTALLATION SIDE VIEW

+56

Response time12 hrs
Recommended by97%of homeowners
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Windows FAQs, answered by experts

It’s easy to tell if you have low-E windows. Light a match or grab a pen light and hold it up to your windows. You should see multiple reflections in the window—four for double-pane windows. If one of the reflections is a slightly different color than the other three, you have low-E windows. If you don’t have low-E windows, all the reflections will be the same color.

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.

Glazing is always done from the outside of the window, while the inside doesn’t require any glazing. This is because the main purpose of glazing is to create a weather-tight seal where the glass meets the frame, protecting against drafts and moisture. Since the exterior is exposed to the elements, that’s the side that needs the weatherproofing.

Whether you need a permit to install a bay window depends on the project's scope. Replacing an existing bay window typically does not require a permit. However, if you are adding a new bay window, requirements can vary. Adding a new bay window to the front of your house usually requires a building permit, while adding one to the side or back of your house often does not. It's always best to check with your local municipality to confirm the specific requirements in your area. Additionally, if you live in a historic district, you should consult your neighborhood association to ensure your project complies with their construction guidelines. If you're unsure about the process, a professional can provide guidance.

Depending on size, material, and labor, two windows can cost between $600 and $1,600.

The Dulles, VA homeowners’ guide to window services

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