OPT Windows Ltd. focuses on aluminum window and door solutions with an emphasis on solid construction and careful installation practices, including surface protection and post-work cleanup.
Customers cite careful preparation and cleanup, patient guidance on product options, and installations that feel sturdy and secure. The company offers aluminum solutions that improve insulation and noise control while maintaining a clean look.
Serving homeowners in Markham and nearby GTA communities, with travel dependent on project size and timing.
Window supply and installation, aluminum-framed window systems, custom-sized patio sliding doors, secure stainless steel mesh screen doors, and replacement of older units with improved insulation and noise reduction.
Recent reviewers frequently mention tidy installations with floor protection and thorough cleanup. Many note the sturdy feel of the aluminum frames and improved insulation and noise reduction after replacement. Customers also highlight patient communication and helpful product guidance, with several recommendations to friends and neighbours. Pricing is described as reasonable by multiple reviewers.
Craig and his team are very nice and professional. They had all protective pads and vaccums handy, and clean your window and doors carefully after installation. The window and door looks sturdy and secure with great noise reduction. 100% recommend this team if you want someone who knows their products and reasonably priced items.
Installed a new backyard secure screen door. Very well-made aluminium door frame with durable stainless steel mesh. It looks sturdy and feels secure. Thank you Craig and his team they’re very nice and helpful. 100% recommend to neighbours and friends!
Craig's team did a great custom job replacing old patio sliding door. The new one feels super sturdy and offers great insulation which you can feel right off the bat. 10/10 would recommend to friends!
We had to replace our slide door due to a break-in incident and my friend referred Craig for the job. They have ver high quality aluminum door&windows. The door feels really tough and safe now. Craig was very patient to our needs and had attention to details.
Where should I start… I completed my house Reno weeks ago, it’s pretty lucky that I met lots of good contractors, and they are one of them, before I reach them I also checked with several other contractors, I should say that Opt gave me the best experience, they are honest, willing to listen your opinions and concerns, and also give ideas when you need it. With their aluminum window frame, I got really wide window in my living room, and all windows are sturdy, reliable. I’m really satisfied with their job since the window is one of the important part of my Reno.
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