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5990 14th Avenue
Markham, Ontario, Canada
L3S 4M4
Tel: [905] 201-7885
Toll Free: [888] OSTACO-1
Fax: [905] 201-7883

 
 
Contact us

14th Avenue
Markham, Ontario, Canada
L3S 4M4
Tel: [905] 201-7885
Toll Free: [888] OSTACO-1
Fax: [905] 201-7883

info@ostaco.com

www.ostaco.com

 
 




Featuring

I know we have significantly improved the appearance and value of our home by installing Ostaco windows.

We recently chose to have Ostaco replace our windows. Our house is 10 years old, and the builder grade windows were a constant burden with drafts, leaks, and maintenance. Our windows were replaced in February, and we noticed an immediate difference in how warm the house was. This difference is equally noticeable in the summer. Our air conditioner is not constantly running as it used to, and the house is always comfortable. Ostaco’s windows look great & perform well.

Dr. Steven Dunn


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