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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon828
    Verified window services reviews

Top-Rated Window pros in Westminster - Updated Nov 2026

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

"One Window At A Time did the work another company I hired couldn't do. Their arrival time was when they said and the job was completed in a timely fashion. I would highly recommend One Window At A Time to anyone that is looking for high quality windows at a better than fair price and workmanship second to none."
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%
24 neighbors recently requested a quote
Avatar for Glide Window Cleaning
Glide Window Cleaning
4.8(
129
)
Window Cleaning

Serving Westminster, CO and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Excellent experience from start to finish! The team was professional, friendly, and arrived on time. They did an amazing job cleaning our windows—they're absolutely sparkling, and I didn't realize how much brighter the house would look afterward. They were careful, efficient, and left everything clean when they finished. I highly recommend this company to anyone looking for quality window cleaning and outstanding customer service. I'll definitely be using them again!"
After
Before
Westminster Sep 26
Before
After

+10

36 neighbors recently requested a quote
Avatar for DMD Window & Door Inc
DMD Window & Door Inc
4.7(
116
)
New Windows - 3-5New Windows - 2New Windows - 6 +

Serving Westminster, CO and surrounding areas

Approved

In business since 1974

Free estimates

Credit card accepted

"I selected DMD Builders after getting quotes from more than 6 windows installers. DMD Builders were very professional. They helped me choose a good windows product. They answered all my questions about the windows and the installation process. Their windows installers were very skilled and did an excellent job. I had 12 windows replaced at my house. They arrived on time and completed the project on time."
project photos
Entry Door Replacement
CUSTOM CURVED WINDOW
REPLACEMENT WINDOWS
Arched glass window

+29

20 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Jammin Films, LLC
Jammin Films, LLC
5.0(
56
)
Window Tinting - Apply or Replace

Serving Westminster, CO and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"I hired Ben to install security window film on all my windows. Ben was very professional and performed the work in a timely manner. His customer service is top notch. Ben kept me informed on his timing until he arrived and did an outstanding job.. I would recommend Ben/Jammin Films for all your window film needs."
Response time5 hrs
Response rate89%
8 neighbors recently requested a quote
Colorado Egress Windows
4.8(
16
)
Egress Window - Install

Serving Westminster, CO and surrounding areas

Approved

In business since 2014

Free estimates

Customers say: Quick response

"I have been hiring contractors for decades and these guys are among the best... and their pricing was excellent. On time, did exactly what they said, great work, great people, when they were finished, the new egress window looked better than I could have hoped, and they covered the room and cleaned to the point you would never have known that I just had the window put in. Can't give them a high enough referral. I can see that it's no coincidence that all their reviews are 5s... just hire them. No question that I would hire them again."
Response time9 hrs
Recommended by100%of homeowners
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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Windows FAQs, answered by experts

During hurricanes or other major storms, high winds can cause objects and debris to fly through the air, which can break your windows. Depending on how strong the storm is, the winds themselves may be strong enough to break your windows, too. Investing in storm windows or hurricane shutters can help protect you against potential window breakage.

In short, it depends. After 20 years, the glass in your windows is less energy efficient, which can cause increased electricity bills. You might also see signs of water damage or natural wear and tear over the years. However, with proper maintenance, some window frames can last up to 50 years, so you may only need to replace the glass to save on energy. 

At the same time, window replacement is a major investment, so replacing the glass in rooms most impacted by outdoor temperatures is one way to avoid going all-in to replace your windows.

Mold on windows forms due to excess moisture from condensation, poor ventilation, or leaks. Cold glass surfaces can attract condensation, especially in winter. High indoor humidity, lack of airflow, or dust accumulation are also contributors. To prevent mold growth, improve ventilation, regularly clean sills, and consider using a dehumidifier or sealing any leaks.

The entire window replacement process, from the initial consultation to the final installation, typically takes between four and 15 weeks. This timeline accounts for measuring appointments, ordering, and manufacturing. On the day of the job, the physical installation takes about 30 minutes to two hours per window. A full-house replacement can take one to three days to complete. Factors that can extend this timeline include the total number of windows, custom sizes, complex window types, second-story installations, and any necessary repairs to existing window frames or openings.

Depending on the window style and your home's layout, you can install replacement windows from either the inside or the outside. Many installations are done from the inside because it allows for better access and weather protection, but some exterior installs are easier for certain types of siding or trim. The key is choosing the approach that gives you the best access to the frame while keeping the existing structure intact.

The Westminster, CO homeowners’ guide to window services

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