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TRUSTED BY WILLIAMSTOWN, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon13
    Verified window and door contracting services reviews

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

Avatar for JMT Construction of CNY LLC
JMT Construction of CNY LLC
4.6(
37
)
New Windows - 6 +Doors (Exterior) - Install or ReplaceEgress Window - Install+5 more

Serving Williamstown, NY and surrounding areas

Approved

Emergency services offered

Credit card accepted

Customers say: True professional

"JMT Construction was Great to work with from start to finish! Jim replaced 5 windows & our sliding glass door in a timely manner and put in extra time to accommodate our schedule. Would definitely recommend JMT Construction and will reach out when needed in the future!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+51

Response time1 day
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for C. Michael Exteriors, Inc.
C. Michael Exteriors, Inc.
4.0(
75
)
New Windows - 2New Windows - 3-5New Windows - 6 +

Serving Williamstown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Warranties offered

"Had a great experience from beginning to end. C. Michael Exteriors, Inc. did a quick and easy job replacing our old picture window with this new window. Pricing and financing was much better than 2 other companies we had come out to try and sell us their windows. Thanks C. Michael Exteriors"
Replacement Bay Window
After install
After install
front of home before install
front of home Before install

+117

Response time12 hrs
Recommended by82%of homeowners
Avatar for GPG Construction
GPG Construction
4.8(
31
)
Doors (Exterior) - Install or ReplaceSliding Door - InstallStorm Door - Install

Serving Williamstown, NY and surrounding areas

Approved

In business since 2007

Free estimates

Customers say: Quick response

"Pete was excellent about keeping me in the loop. There were some problem areas underneath the old siding that needed repair as well and I was kept abreast of every situation. He was very responsive and easy to get a hold of."
Response time10 hrs
2 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Pace Window & Door Corp.
Pace Window & Door Corp.
3.7(
98
)
Doors (Exterior) - Install or Replace

Serving Williamstown, NY and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"I am THRILLED with my 19-window purchase from Pace Window and Door! Not only are the windows beautiful and so easy to use, but the outside surround looks like I have a new house! From Glen, the sales rep to the skilled and immaculate installers Dan & James, I am very happy with the entire purchase & process. I highly recommend Pace Window & Door and their lifetime warranty that can even be passed on to any future owners of this property! I heard that there are 3000 window companies in the US and only 10 manufacturers. How lucky that Pace is one of those skilled manufacturers in Rochester. Thank you Pace Window and Door—great job! 🥰 The project option above did not list windows, and I couldn't post this review without clicking that box that says doors."
Response time4 days
134 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Stellar Roofing
Stellar Roofing
4.9(
21
)
New Windows - 6 +

Serving Williamstown, NY and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Hands down the BEST company to work with! Absolutely great experience from the sales person to the crew and supervisor that did our roof! Would never use any other company! Their work is immaculate and our roof looks stunning!!"
Response time2 days
550 neighbors recently requested a quote
Avatar for Harnas Home Services
Harnas Home Services
5.0(
10
)
Doors (Exterior) - Install or ReplaceDoors (Interior) - Install or Replace

Serving Williamstown, NY and surrounding areas

Approved

Free estimates

Small jobs welcome

"Had a few small projects that needed to be done. One was a toilet issue which he knew the problem and was able to fix it very fast. The other was my outdoor lights. The winter ice build up destroyed my front lights and he managed to get those repaired fast and at a good price. I would fully recommend if you have any issues. Very knowledgeable and willing to help any way he can."
Ceiling fan
Deck Rebuild
Patio
Post repair
Shed siding

+10

Grady's Painting Plastering/Construction
2.0(
174
)
Window Well Covers - Install or Repair

Serving Williamstown, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"When confronted with a crisis because of a copper plumbing burglary, Mr. Grady, of Grady's Painting, Plastering and Construction, willingly traveled many miles to come to my aid. Requesting only a $1.00 deposit against a $4,500.00 job, he masterfully reconstructed my nineteenth century lath and plaster hallway wall, also thoroughly compensating for a missing portion of a central stud unwittingly removed by a plumber! After his extensive search for appropriate composition and dimension of material, he replaced and replicated a section of my forty-year-old faux onyx tub surround with common white PVC sheet, tinted oil-based colors, glaze, paint brush, and a rag. His applied natural talents and superlative skills saved me thousands of dollars! On the basis of both professional conversation and knowledgeable observation, Mr. Grady possesses the intrinsic knowledge of old-world trades, the artistic capabilities, the problem=solving thought processes, and the personal work ethic to accomplish a broud scope of reconstruction and restoration."
Response time11 hrs
Response rate100%
Recommended by57%of homeowners
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Window Door Contractors FAQs, answered by experts

Adding a window to a brick house costs $3,100 to $10,575. Because you’ll need to make changes to the structure of the home, the cost will include obtaining permits and hiring the best pros for this complex job. Larger windows will cost more to install, and the cost can vary based on the window frame material you choose.

Most solar screens last 10 to 15 years, depending on the material quality, exposure to weather, and the level of maintenance. High-quality materials and regular cleaning can extend their lifespan, while harsh climates or neglect may shorten it. Routine cleaning, inspecting for damage, and avoiding harsh cleaners can help extend the lifespan of your screens.

It is generally recommended to remove window screens for the winter, especially in climates with heavy snow, freezing rain, or frigid temperatures. Removing them helps prevent damage to the screen mesh and frames that can be caused by ice and moisture buildup between the screen and the window. Taking out the screens also allows more natural light and warmth into your home during shorter winter days and makes it easier to clean your windows thoroughly. In warmer climates where harsh weather is not a concern, the decision is more about personal preference; some homeowners prefer the clearer view, while others leave them in for convenience.

If you’re not keen on using a traditional doggie door, there are some alternatives. One popular option is a solid, insulated door that you can lock when you’re out of the home for added security. You can also opt for a doggie screen, which you can lift and lower to allow your pooch access to the outdoors. These are a bit more convenient to use than a regular exterior door, although security could be an issue. You can also install a screen door with a small opening for your pup to prevent bugs from coming inside as your dog exits.

Many windows carry warranties from the manufacturer or installer that may cover the cost of repairs for a fixed amount of time. When installing or replacing windows, ask about any applicable warranties, what kinds of damage and repair they may cover, and what the procedure is for making a warranty claim.

The Williamstown, NY 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.