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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
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Additional Photos
Additional Photos

+51

Response time1 day
8 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

"After door was installed the finished molding was not to our liking..We called Pace and they sent out Mike/Dan and they did a super job . This is our second door we have had installed. We would highly reccomend the company,the product and the installation. Thank you."
Response time4 days
132 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
556 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

The average cost to screen-in your patio ranges from $2,000 to $4,000. How much you spend depends on the size of your patio, the materials used, and construction complexity. Some patio screen room kits are easy to DIY, but you may need to hire a local screened-in porch builder and obtain permits for more complex designs.

Most standard windows can accommodate solar screens, but specialty shapes or non-standard frames may require custom solutions. It’s important to consult with a professional to ensure compatibility and proper fit for unique window designs. Arched, bay, and fabricated windows often need fabricated screens, which can increase costs and lead time.

Window repairs cost $175 to $615, depending on the type of repair. Because double-hung windows have two sashes and multiple pieces of hardware, like locks and handles, there are many parts that can break over time. Repairing locks, latches, or other hardware costs about $75 to $200 and is easy to DIY. Fixing one or multiple sashes costs about $200 to $600.

Among the various entry points into your residence, it's crucial to recognize that your basement windows are arguably the most susceptible. Basements usually have windows facing the side and back yards, often concealed from driveway floodlights, porch lighting, and doorbell cameras. Their vulnerability underscores the importance of reinforcing basement window security to safeguard your home from break-ins.

The cost of a window repair varies significantly depending on which part is damaged. Here is a breakdown of common repairs and their estimated costs:

  • Broken seal or fogginess between panes: $70–$245

  • Cracked pane: $40–$100

  • Broken glass: $200–$2,000

  • Sash, seal, or track repair: $200–$600

  • Latch or hardware issues: $75–$200

  • Broken window frame: $175–$1,000

  • Window screen replacement: $140–$480

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.