Windows and Replacement Windows

Aluminum Clad Wood

Beautiful wood inside. Weatherproof, low maintenance, aluminum cladding outside. It’s the perfect combination. Our wood is select pine, or you can upgrade to one of eight other species. Our double thick cladding comes in every color you can think of.

Sierra Sliding Patio Door Replacement Window
Buy Sierra Bay or Bow Window to replace your old windows
Sierra Awning Window/Replacement Window
Sierra Geometric Shape Window. Replacement Windows
Sierra Single Hung Window and Replacement Window
Sierra Horizontal Sliding Window and Replacement Window
Sierra Swinging Patio Door for window replacement
Sierra Double Hung Window and Replacement Window
Sierra Casement Window

Open wide and say “Wow!”

Available with a wide range of sizes and configurations in bi-fold or multi-slide doors and windows, they have nearly limitless applications for both residential and commercial projects. Low maintenance aluminum clad exterior or all-wood exterior for bi-folds. Multi-slides feature our aluminum clad exterior.

Concord Windows and Doors - Replacement Windows

A new choice for affordable vinyl windows

A clean, uncluttered look,with built-in details make Ostaco casement and awning windows a very popular choice. The profiles are made from virgin, lead-free u-PVC powder that resists the effects of the most adverse conditions.The profiles are available in as many as 23 different colours and all of the profiles are capable of accepting steel reinforcing as may be dictated by style or size of window.

Concord Windows & Doors

8461 Keele Street, Unit 21&22
Concord, Ontario
L4K 1Z6
(905) 669-8248


Monday-Thursday: 9-4pm
Friday: 9-1pm
Saturday: By Appointment Only
Sunday: Closed


Payment: Visa, MasterCard, Cheques

Concord Windows and Doors


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