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

Avatar for Colorado Outdoor Life, LLC
Colorado Outdoor Life, LLC
4.9(
84
)
Window Well Covers - Install or Repair

Serving Westminster, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Rick and Cindy are amazing to work with. Some of the most genuine people to work with. We appreciate all their hard work as well as the crew. They replaced all our Window Well covers (4) and a couple of window wells. We are very glad we found them!!!"
Window Well Cover - Cherry Hills
Polycarbonate Window Well Cover
Polycarbonate Window Well Cover
Polycarbonate Window Well Cover
After Window Well Maintenance

+17

Response time2 days
Recommended by86%of homeowners
Avatar for One Window At a Time
One Window At a Time
4.9(
102
)
New Windows - 6 +New Windows - 2New Windows - 3-5

Serving Westminster, CO and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quality work

"Bruce and his crew did an amazing job, they replaced the windows in my townhouse and it looks incredible! The price was very reasonable and the entire experience was great, I am looking forward to the cost savings in heating and cooling my home too. I would 100% recommend One Window at a Time!"
Before and After
Double hang with picture window
3 lite casement
Double hung windows with grids
3 lite slider with grids

+67

Response time1 day
Response rate97%
20 neighbors recently requested a quote
Avatar for DMD Window & Door Inc
DMD Window & Door Inc
4.7(
116
)
Doors (Exterior) - Install or ReplaceNew Windows - 3-5New Windows - 2+2 more

Serving Westminster, CO and surrounding areas

Approved

In business since 1974

Free estimates

Credit card accepted

"We had DMD intall a bay window for us in the 80's and were so pleased with the results. Needing to place windows and doors, I was delighted to see they were still here. Again, Bill was most accommodating and and responded to questions in a timely manner. Chad, Alex and Kevin came to demo and replace 2 sliding glass doors and several windows. Their work ethic and teamwork was unbelievable. I HIGHLY recommend DMD for any work you may want done."
project photos
Entry Door Replacement
CUSTOM CURVED WINDOW
REPLACEMENT WINDOWS
Arched glass window

+29

18 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for On Demand Contracting
On Demand Contracting
4.5(
52
)
Doors - RepairDoors (Exterior) - Install or ReplaceSliding Door or Tracks - Repair+7 more

Serving Westminster, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Small jobs welcome

Credit card accepted

"RC arrived in a timely manner to provide me an estimate on installing a metal cellar door. However, when I tried to find a dealer for the size we needed, it became impossible. After an internet search, I settled on a door that would need an extension. While RC would have been able to install it, the cost would escalate exponentially since the door is pricey. He told me he could build a durable cellar door using treated lumber, prime it, paint it, and install all necessary hardware for a lower price. A day later he gladly came in and made a minor change that I requested. The end product was perfect, and he saved me some change. I am glad I went to Angi to find this professional."
PAINT
TRIM
FLOORING
GETTING DOOR INSTALLED
DOOR INSTALATION

+110

Response time5 hrs
Response rate100%
59 neighbors recently requested a quote
Avatar for JM Window Cleaning
JM Window Cleaning
4.9(
64
)
Door or Window Screens - Install or Repair

Serving Westminster, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"José was quick to reply and easy to set up an appointment for screen door and window repair. He did great work very quickly, and he explained the repairs for me. I’ll definitely hire him again."
I house in Parker
I house in Parker
I house in Parker
I house in Parker
I house in Parker

+68

Response time4 hrs
Response rate99%
10 neighbors recently requested a quote
Avatar for In the Grain Houseworks
In the Grain Houseworks
4.9(
94
)
Doors - Repair

Serving Westminster, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Small jobs welcome

"David did an excellent job installing an interior door for a master bathroom. His craftsmanship and attention to detail was top notch. The finished door, trim, hinges and privacy door knob all perfectly matched our existing interior doors. I enjoyed working with him and would not hesitate to hire him again for future projects."
Response time11 hrs
Response rate100%
4 neighbors recently requested a quote
Ross Windows & Doors
4.3(
52
)
Doors (Exterior) - Install or ReplaceDoors (Interior) - Install or ReplaceDoors - Repair+22 more

Serving Westminster, CO and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"Did great work replacing a storm door and an exterior door for us - they look and work great, he even came back out six months later to make adjustments at no cost when one of them shifted a little with the weather."
delapitated atrium tansformation
sliding patio door with internal blinds
transformation to bay window
OUR WORK
OUR WORK

+15

Response time11 hrs
Response rate89%
11 neighbors recently requested a quote
Avatar for Adams County Glass, LLC
Adams County Glass, LLC
4.8(
38
)
Window Glass - Install or ReplaceNew Windows - 6 +New Windows - 2+5 more

Serving Westminster, CO and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"The team at Adams Count Glass did a good job replacing my window glass! Installation was fast and fairly priced. One thing I noticed after installation was that the paint was chipped in a lot of places around the window, but not a big inconvenience. I pointed it out to the team, but I was told they don't paint. Other than that, pretty good job!"
6 neighbors recently requested a quote
Recommended by78%of homeowners
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Window Door Contractors FAQs, answered by experts

There are different types of screen materials available when purchasing a screen door, but the two main options are fiberglass and aluminum. Fiberglass is lightweight and affordable, but can stretch out, so it needs to be replaced more often. Aluminum has a higher upfront cost, but is more sturdy. Aluminum can be more difficult to install, even if you know how to replace screen door mesh.

To ensure the longevity and smooth functioning of new windows, regular maintenance is essential. This includes cleaning the glass and frames, inspecting seals for leaks or damage, and reapplying caulking as needed. It is also important to lubricate all moving parts and operating mechanisms to ensure they continue to operate smoothly.

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.

Tears, holes, or difficulty in opening and closing suggest a need for repair.

For most common repairs, a professional window repair service can fix a window in one to three hours. However, replacing window frames or repairing a large, multi-pane window will likely take longer to complete. For comparison, a window installation or repair professional should be able to replace up to 15 windows per day.

The Westminster, CO 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.