Ostaco Windows & Doors has been a leading manufacturer of custom windows and doors in southern Ontario since 1981. We offer the solutions and options to suit all your needs. Whether it’s a new build, custom home, or a renovation, all Ostaco products are made to order. And rest assured, you can customize without sacrificing performance. Our products are certified by the highest fenestration standards, Quality Auditing Institute and Energy Star, and are backed by an industry leading limited lifetime warranty.

Owned In: Ontario

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Last Updated March 25, 2022

Made In Concord, ON:

  • Windows
  • Door
  • Patio Doors

Ostaco Windows & Doors Availability:

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Opening Hours

Monday

8:00 am - 4:30 pm

Tuesday

8:00 am - 4:30 pm

Wednesday

8:00 am - 4:30 pm

Thursday

8:00 am - 4:30 pm

Friday

8:00 am - 4:30 pm

Saturday

CLOSED

Sunday

CLOSED