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Replacement Windows 
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Bay & Bow Windows
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Sliding Windows
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Replacement Doors 
Aluminum Doors
Entry & Front Doors
Fiberglass Doors
French Doors
Patio Doors
Siding Doors
Steel Doors
Storm Doors
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BBB Business Integrity Awards - 2017 Finalist (Category II)
Sentry Windows and Doors is proud to be a finalist for the BBB's Integrity Award.... [Read more]
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Comprehensive Replacement Window & Door Company in Chatham, ON

Happy Customers Surrounding Chatham, ON
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Superior Replacement Window & Door Installation Services in Chatham, ON

Sentry Windows and Doors is your leading expert for all window and door solutions in Chatham and the surrounding areas. Our selection of products come in a variety of styles and are made with a superior quality and that will immediately boost your home's design and security. Our installers will work with you to find the perfect solution for your problem and are ready to meet your every need with an easy installation.

Energy Efficient Windows

Sentry Windows and Doors provides energy efficient windows that are well insulated and come straight from industry leading manufacturers. Whether your windows are drafty, outdated, or lack appeal, our professionals are equipped with the solution that can solve any of your dilemmas. We have a large selection of window styles to select from, including:

  • Double-hung windows
  • Casement windows
  • Bay & bow windows
  • Sliding windows
  • Awning windows
  • Picture windows

Our vinyl replacement windows from Sunrise offer a vast array of benefits over the competition that are sure to stand out in your home. Vinyl is an affordable, low-maintenance material that will save you money on your energy bills with its efficient design. Our professional window replacement teams will ensure that your new windows are properly installed, eliminating drafts and safety concerns. You can't go wrong when you work with Sentry Windows and Doors! To learn more about window installation cost as well as replacement window cost, call or click today!

High-Quality Replacement Doors

Interested in replacing your home's entry or patio doors? Our experts have you covered. Whether it's improving the security of your home or boosting the aesthetic appeal of your exterior, Sentry Windows and Doors's professionals are ready to aide you every step of the way. Our goal is to find the selection that perfectly fits your needs and provide you the reassurance you've always desired from your local contractor. We have a wide array of replacement doors to choose from, including:

  • Vinyl doors
  • Aluminum doors
  • Fiberglass doors
  • Wood doors
  • Steel doors
  • Entry & front doors
  • Patio doors
  • Sliding doors
  • French doors
  • Storm doors

Replacement windows and doors can be a huge boon to your home's appearance, value, and energy efficiency if you go about these projects the right way. Sentry Windows and Doors is proud of the work we do, and our customers can attest to the exceptional work we will provide. If you would like to learn more information about door installation cost in Chatham, ON, call Sentry Windows and Doors today for a free estimate!

Case Studies From Chatham
For this project we had three major challenges we had to overcome in order to complete this project: 1. Converting a small single man door opening...
Work Requests From Chatham, ON
in Chatham
Park Ave E in Chatham
I have a sun room that needs 4 windows and a patio/sliding door. Wondering if I can get a quote and a possible start time, Thanks
Forest Street in Chatham
I need a exterior door replaced ASAP please since I was broken into last Friday
Willowmac Ave in Chatham
5 basement Windows 2 will be fixed and 2 casement Windows in familyroom
Tweedsmuir Ave West in Chatham
Need a Screen Sliding Patio Door ,can you visit us and give a Estimate on Replacing Screen Door Thank You Joe Burns
Riverview Drive in Chatham
Need replacement Windows and front door
Scane Street in Chatham
Need to replace windows on old home
King St E. in Chatham
Need to replace inside patio door ASAP. Thank you.
Alexandra Sve in Chatham
Looking to replacement 4 windows
Meadowlea Rd in Chatham
Having an estimate done by Certified Windows & Doors to replace windows and am doing due diligence by getting some more quotes
Chestnut Drive in Chatham
We need to replace a screen door damaged on the storm we had a few weeks ago. Would like full glass but also want to have air flow, so a screen also... Email is best
Churchill St in Chatham
Im looking for a quote for an outside door for purchase and installation.
Victoria Ave in Chatham
This is old house and we need to replace some Windows.
Dovercourt St in Chatham
Green Ontario Rebate Program One double hung One single hung Three single sliders One fixed window with box in dryer vent
Lacroix St in Chatham
Looking for quote on replacement windows for 6 main floor rooms and 4 basement windows
Dover Court in Chatham
Window replacement
Viscount Rd in Chatham
I need new patio doors. Mine keep going off track, don't lock properly and are wood incased which are starting to rot and mould.
Dunkirk Dr in Chatham
We are interested in a garden door with mini blind inserts to replace our current 5 foot patio door as well as a screen door for our side door.
Delaware Ave. in Chatham
This person has filled out the Star Power Pro survey on that you sent them and is interested in another service you provide: windows & doors. Please contact them to schedule a new appointment for this service. This is a no-charge lead.
Victoria Ave Chatham in Chatham
Large house with approx 40 windows needing replace
Serving the following Chatham, ON postal codes
N7L 0A1, N7L 0A2, N7L 0A3, N7L 0A4, N7L 0A6, N7L 0A7, N7L 0A8, N7L 0A9, N7L 0B1, N7L 0B2, N7L 0B3, N7L 0B4, N7L 0B5, N7L 0B7, N7L 0B8, N7L 0B9, N7L 0C1, N7L 0C2, N7L 0C3, N7L 0C5, N7L 0C6, N7L 0C7, N7L 0C8, N7L 0C9, N7L 0E1, N7L 0E2, N7L 0E3, N7L 0E4, N7L 0E5, N7L 0E6, N7L 0E7, N7L 0E8, N7L 0E9, N7L 0G1, N7L 0G2, N7L 0G3, N7L 1A4, N7L 1A5, N7L 1A6, N7L 1A7, N7L 1B2, N7L 1B3, N7L 1B4, N7L 1B5, N7L 1B6, N7L 1B7, N7L 1B9, N7L 1C1, N7L 1C2, N7L 1C3, N7L 1C4, N7L 1C5, N7L 1C6, N7L 1C7, N7L 1C8, N7L 1C9, N7L 1E1, N7L 1E2, N7L 1E3, N7L 1E4, N7L 1E5, N7L 1E6, N7L 1E7, N7L 1E8, N7L 1E9, N7L 1G1, N7L 1G2, N7L 1G3, N7L 1G4, N7L 1G5, N7L 1G6, N7L 1G7, N7L 1G8, N7L 1G9, N7L 1H1, N7L 1H2, N7L 1H3, N7L 1H4, N7L 1H5, N7L 1H6, N7L 1H7, N7L 1H8, N7L 1H9, N7L 1J1, N7L 1J2, N7L 1J3, N7L 1J4, N7L 1J5, N7L 1J6, N7L 1J7, N7L 1J8, N7L 1J9, N7L 1K1, N7L 1K2, N7L 1K3, N7L 1K4, N7L 1K5, N7L 1K6, N7L 1K7, N7L 1K8, N7L 1K9, N7L 1L1, N7L 1L2, N7L 1L3, N7L 1L4, N7L 1L5, N7L 1L6, N7L 1L7, N7L 1L8, N7L 1L9, N7L 1M1, N7L 1M2, N7L 1M3, N7L 1M4