Business Details

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Ostaco Windows & DoorsOwner Verified Business

248 Bowes Rd.
L3S 4M4
Ostaco Windows & Doors is a window and door manufacturer based in Concord, ON. Ostaco manufactures vinyl windows, entry door systems and patio doors.



3 reviews

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  • 1 Star
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    • 1 reviews

    very disappointed

    Had a custom window built by Ostaco after several delays we received our window with one of 3 panes broken. The window was installed and while we waited for the replacement window, the window bowed out severely. They were prompt to replace the window with a revamped design to strengthen the window however a similar bowing occurred. We are now 5 months into the process and we received a call telling us that in their opinion it is within tolerance. My question is what tolerance? Has anyone ever had a window where the glass is actually bent/curved from the bowing? I won't be buying anymore windows from Ostaco as it appears to me that they are treating this as a job too small for any further consideration.

    By: bent


    Got a door with grills. You can clearly see the pins in the joints of the grills. Very shoddy put together. Now what?

    By: non-member


    By: VIKKI

    Have you tried to contact Ostaco to get a new piece of glass put in? It may have been a lemon.

    1 - 3 of 3

    Additional Business Details

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    Since 1981, Ostaco Windows & Doors have been in the business of providing high quality window and door systems. It is Ostaco's mission to meet each and every customers unique demands.

    Throughout its history Ostaco has prided itself on setting the benchmark in the Canadian window and door marketplace by providing high quality, innovative, energy efficient products coupled with exceptional customer service. The 20 year Ostaco warranty is one of the best in the industry and can be offered because of Ostaco's outstanding quality control measures.

    Ostaco products have been tested and are certified by the National Fenestration Rating Council (NFRC) and carry the Energy Star rating. Ostaco's facility and procedures are certified by the National Accreditation and Management Institute (NAMI). Ostaco Windows & Doors are a member of the Canadian Window and Door Manufacturers Association.

    248 Bowes Rd.



    Business Hours (Open)

    Mon: 7:30am - 4:30pm
    Tue: 7:30am - 4:30pm
    Wed: 7:30am - 4:30pm
    Thu: 7:30am - 4:30pm
    Fri: 7:30am - 4:30pm




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