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TRUSTED BY JOHNSTOWN, CO HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon689
    Verified window and door contracting services reviews

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

Avatar for Empire Glass Company
Empire Glass Company
4.9(
129
)
New Windows - 6 +Window Glass - Install or ReplaceNew Windows - 3-5+6 more

Serving Johnstown, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Absolutely wonderful experience from the first phone call to final installation. Everyone I was in contact with was exceptionally friendly and professional. They were flexible when I needed to rescheduled due to weather. The first person I spoke to when my picture window cracked was the owner. I was a bit freaked out when my window cracked for no apparent reason and he put my mind at ease. I got the sense that he is a very good boss b/c everyone i worked with at Empire thru my glass replacement process genuinely seemed like they enjoyed their job. Which is very rare these days. Highly recommend!"
In glass pet door
Frameless Rain Glass
Frameless Custom
Frameless Custom
Frameless Custom

+20

Response time1 day
Response rate97%
42 neighbors recently requested a quote
Avatar for Bellwether Homes
Bellwether Homes
4.7(
27
)
New Windows - 6 +

Serving Johnstown, CO and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"The project went smooth from start to finish. They started exactly when expected and ended when as they said. They did a good clean job. Our house looks so good now. The rates were very competitive and I believe we got a great deal! I am getting compliments all the time. It was money well spent. You can't go wrong with this company !"
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+95

Response time1 day
Response rate100%
18 neighbors recently requested a quote
Avatar for Power Home Remodeling
Power Home Remodeling
4.2(
790
)
New Windows - 6 +New Windows - 3-5

Serving Johnstown, CO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"I got some windows from Power and LOVE their work so we ordered 2 doors too. The doors are amazing and they were very professional and courteous during the install. I continue to be impressed by Power and will continue to reach out to them as needs come up."
Double Hung & Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung W/ Half Round
Double Hung
Double-Hung Window

+24

1686 neighbors recently requested a quote
Recommended by88%of homeowners
Champion Windows of Ft.Collins
4.2(
130
)
Sliding Door - InstallNew Windows - 3-5New Windows - 6 ++1 more

Serving Johnstown, CO and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"Ryan was knowledgeable, professional and detail oriented throughout the process. This giving me confidence in the quality of products being offered. I would recommend Champion for your window and door replacement needs."
17 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Cransten Remodeling
Cransten Remodeling
4.5(
206
)
Doors (Exterior) - Install or ReplaceDoors (Interior) - Install or ReplaceDoors - Repair - For Business+2 more

Serving Johnstown, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Joseph Donabella was the handyman that came and fixed my front door. I have not been able to use my deadbolt for years. Joe took the door off and refit it properly so I can now use my deadbolt again. My door knob lock was also sticking. After he checked it he said I needed to replace the door knob due to its age and suggested I go to a hardware store so I can get the new knob and get it rekeyed to my current key. He was very pleasant and professional. I would work with him again."
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+18

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Bellwether Windows, Siding, & Doors
Bellwether Windows, Siding, & Doors
4.8(
26
)
New Windows - 6 +

Serving Johnstown, CO and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"It could not have gone better. Josh was very easy to work with and the installers were top notch and cleaned up everything each day and after completing job. We have had many comments how nice the house looks."
Response time1 day
Response rate100%
47 neighbors recently requested a quote
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Window Door Contractors FAQs, answered by experts

No, but removing window screens will achieve a deeper clean. If you aren’t sure how to remove your screens, you can still clean them while in your window. You can follow the same cleaning steps, but you may not be able to get into corners or struggle to clean the entire screen if the window is up high.

Ensures proper fit and function, maximizing insect protection and airflow.

Installing a basement window generally takes a few hours, assuming there are no structural issues you need to resolve first. If you’re a novice DIYer, the project could take longer; on the flip side, a licensed and trained window contractor may be able to replace multiple basement windows in the time it takes a homeowner to replace one.

Most windows last for 15 to 30 years, depending on the frame material and the glass quality, but most will require repairs during that time. Windows gradually lose efficiency, so it’s usually best to have a window repair technician inspect and service your windows every five to 10 years. You should also repair your windows if you experience the following:

  • Leaks

  • Drafts

  • Difficulty opening or closing

  • Sudden increases in heating and cooling bills

  • Outdoor noise becomes more audible

  • Signs of physical damage

Yes, professionals can enhance screen durability by using robust materials like stainless steel or fiberglass and employing advanced installation techniques. They provide reinforcement and repair services that extend the screens' lifespan while maintaining functionality and appearance.

The Johnstown, 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.