OPT Windows Ltd
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Premium Thermally-broken Aluminum Windows & Doors, Security Doors & Porch Enclosures. 🇨🇦 Made in Toronto
💰 Cost-Effective | 🔧 Professional Installation | Serving Toronto & GTA
09/30/2026
🏡 Custom Arched Porch Enclosure | Style, Comfort & Protection
Another beautiful project completed by OPT Windows! ✨
This custom-made porch enclosure features an elegant arched top and a modern dark grey aluminum frame, perfectly complementing the home's exterior.
Designed for Canadian weather, it adds an extra layer of protection while keeping your entrance bright and welcoming.
✨ Project Highlights:
🏗️ Custom arched design to match the existing entrance
❄️ Thermally broken aluminum frames for improved insulation
🪟 Double-pane tempered glass with Argon gas
🔒 Multi-point locking system for added security
☀️ Large glass panels to maximize natural light
🔧 Custom measurements and professional installation by our own team
Whether your entrance is standard or uniquely shaped, we can create a custom porch enclosure to fit your home!
📍 Serving Toronto, Markham, Richmond Hill, Vaughan, Aurora & surrounding GTA areas.
📩 Interested in a FREE estimate?
Send us a photo of your existing porch and approximate dimensions. Our team will be happy to help!
09/28/2026
🔒 Upgrade Your Home with a Premium Security Screen Door!
Looking for extra security without sacrificing fresh air? 🏡
Check out some of our recently completed projects! From front entrances to backyard and side doors, OPT Windows offers custom-made security screen doors designed to fit your home.
✨ Why choose our security screen doors?
🛡️ Heavy-duty 304 stainless steel mesh for added security and durability
🌿 Enjoy fresh air while keeping insects out
🚪 Custom single and double-door designs
🎨 Available in Black, White & Grey to complement your home
🔧 Custom measurements and professional installation by our own team
Whether you're upgrading your front entrance or backyard door, our security screen doors combine protection, ventilation and modern style.
📍 Proudly serving Toronto & the GTA: Markham, Richmond Hill, Vaughan, Aurora, Mississauga, Brampton, Pickering, Ajax, Whitby & surrounding areas.
📩 Interested in a FREE estimate?
Send us a photo of your existing doorway and approximate dimensions. Our team will be happy to help!
🏡 OPT Windows — Designed for Your Home. Built for Peace of Mind.
09/10/2026
Recently completed front porch enclosure 🏡
This enclosed porch was custom built using thermally-broken aluminum frames and large glass panels to keep the space bright, modern, and functional.
With a double front door and operable side windows, the entrance now offers:
✔ Better protection from wind, rain, and snow
✔ A more comfortable buffer space in winter
✔ Ventilation in warmer months
✔ Improved curb appeal and everyday convenience
If you already have a covered porch, we may be able to customize a porch enclosure for your home too.
📩 Send us a photo + approximate dimensions for a free estimate.
📍 Serving GTA: Toronto, Markham, Richmond Hill, Vaughan, King, Mississauga, Brampton, Pickering, Ajax, Whitby, Oshawa
08/24/2026
🏡 Upgrade Your Entrance with a Premium Porch Enclosure
Your front entrance is one of the first things people notice about your home — and the right porch enclosure can completely transform both its look and everyday comfort.
At OPT Windows, every porch enclosure is custom-made to fit your home, whether you prefer a clean modern design, traditional style, arched openings, double doors, or a larger enclosed entrance.
✨ Why homeowners are upgrading their entrances:
✔️ Premium thermally-broken aluminum framing
✔️ Custom sizes & designs for different homes
✔️ Tempered glass with multiple upgrade options
✔️ Multi-point locking system for added security
✔️ Operable windows available for fresh air
✔️ Built for Canadian four-season weather
✔️ Professional installation by our own team
From a simple entrance upgrade to a completely enclosed porch, we can design it around your existing home and architecture.
📸 Swipe through to see some of our completed porch enclosure projects across the GTA.
📍 Serving the GTA & surrounding areas:
Toronto • Markham • Richmond Hill • Vaughan • King • Mississauga • Brampton • Pickering • Ajax • Whitby • Oshawa
Thinking about upgrading your entrance?
📩 Send us a photo of your front porch + approximate measurements for a free initial estimate.
📍 Markham Showroom
🏡 One Home Upgrade We Wish We Had Done Sooner
After living through a few Canadian winters, you quickly realize how much of a difference a well-designed front entrance can make.
Cold air rushing into the house every time the door opens in winter. ❄️
Mosquitoes getting inside when you want some fresh air in summer. 🦟
Packages sitting outside exposed to rain, snow and wind. 📦
A custom porch enclosure / storm door system creates an extra layer between your home and the outdoors — and it can completely change how your entrance looks and feels.
✨ More comfort. More function. More curb appeal.
Our custom systems feature:
✔️ Premium thermally broken aluminum frames
✔️ Multi-point locking system for added security
✔️ Operable windows for fresh-air ventilation
✔️ 304 stainless steel insect/security mesh
✔️ Custom sizing and configurations
✔️ Clean, modern designs that complement your home
It’s not just about blocking the wind.
It creates a practical transition space at your entrance while helping protect your home from the changing Canadian weather — all while giving the front of your house a beautiful upgrade.
At OPT Windows, every project is customized for the home:
📏 Professional on-site measurements
📝 One-on-one design and configuration
🏭 Locally manufactured in the GTA
👷 Installed by our own installation team
📍 Serving Toronto, Markham, Richmond Hill, Vaughan, Mississauga, Brampton, Pickering, Ajax, Whitby, Oshawa & surrounding GTA areas.
Thinking about upgrading your entrance?
📩 Send us a photo of your front entrance and approximate measurements for a free estimate.
08/24/2026
A porch enclosure is one of those upgrades you don’t realize you need — until you have one. 🇨🇦🏡
For Canadian homes, it’s more than just adding another door. It creates a practical, comfortable transition between the outdoors and your living space — while giving the front of your home a clean, modern upgrade.
This recent project features:
✨ Large glass panels for plenty of natural light
❄️ Thermally broken aluminum frames designed for Canadian weather
🔒 Multi-point locking system for added security
🪟 Double or triple glazing options for improved comfort and insulation
🌿 A practical enclosed space for shoes, packages and everyday use
🏡 Custom-made to fit the existing home
The result? More usable space, better protection from the elements, and a brighter, more polished entrance.
Proudly made in Ontario and professionally installed by our own team.
📩 Thinking about enclosing your porch? Send us a photo and approximate dimensions for a free estimate.
📍 Serving homeowners across the GTA, including Toronto, Markham, Richmond Hill, Vaughan, King, Mississauga, Brampton, Pickering, Ajax, Whitby & Oshawa.
🇨🇦 The first time you slide this door... you'll understand the difference.
Most people expect a large glass door to feel heavy.
Then they try ours.
"Wow... it's so smooth."
That's the difference a premium Lift & Slide Door makes.
At OPT Windows, our heavy-duty sliding doors are engineered for modern Canadian homes, combining luxury aesthetics with outstanding performance.
✨ Why homeowners are making the upgrade:
✔ Premium thermally-broken aluminum frame
✔ Effortless lift & slide operation
✔ Large glass panels for more natural light and stunning views
✔ Superior weather sealing for Canadian winters
✔ Premium German hardware for smooth, quiet operation
✔ Multiple opening configurations available
✔ Optional 304 stainless steel security mesh for fresh air without bugs
Whether you're renovating your backyard, upgrading your patio, or building your dream home, a premium sliding door transforms both the look and feel of your living space.
Because sometimes, the best part isn't how it looks...
It's how it feels every time you open it.
📍 Proudly Made in Ontario
📐 Custom built for your home
👷 Professionally installed by the OPT Windows team
📩 Contact us today for a FREE quote or visit our Markham showroom to experience the difference yourself.
🇨🇦 The moment you install a porch enclosure, you'll wonder why you didn't do it sooner.
It's one of those home upgrades you don't fully appreciate... until you experience a Canadian winter.
No more freezing air rushing into your home.
No more opening the door to rain, snow, or swarms of bugs.
Just a cleaner, safer, and more comfortable entrance—every single day.
✨ Designed for the way Canadians live:
🏡 Adds a bright, functional entry space for shoes, strollers, packages, and everyday convenience
❄️ Helps block cold drafts and improve year-round comfort
🔒 Reinforced multi-point locking system for enhanced security
🌬️ Built-in casement windows let fresh air flow naturally
🦟 304 stainless steel security screens keep insects out while you enjoy the breeze
🪟 Premium thermally-broken aluminum construction, built to perform in Canada's changing seasons
A porch enclosure isn't just about protecting your entrance.
It's about making your home feel more comfortable, more secure, and more complete.
📍 Proudly manufactured in Ontario
📏 Custom-designed for every home
👷 Installed by the experienced OPT Windows team
📩 Contact us today for a FREE quote or visit our Markham showroom.
07/13/2026
🇨🇦 You don't realize how valuable a porch enclosure is... until you've lived through a Canadian winter.
One cold day, one snowy afternoon, or one summer evening full of bugs—and it all makes sense.
A premium porch enclosure isn't just another door.
It's an upgrade to the way you live.
✨ Why homeowners are making the switch:
🏡 Creates a functional entryway with extra space for shoes, strollers, and deliveries
❄️ Helps reduce cold drafts before they reach your home
🔒 Multi-point locking system for an added layer of security
🌬️ Casement windows provide fresh air and natural ventilation
🦟 304 stainless steel security mesh keeps bugs out while letting the breeze in
🪟 Premium thermally-broken aluminum, engineered for Canadian weather
Because the best home upgrades aren't always the most obvious...
They're the ones you appreciate every single day—every time you come home.
📍 Proudly manufactured in Ontario
📏 Custom built for your home
👷 Professionally installed by the OPT Windows team
📩 Message us today for a FREE quote or visit our Markham showroom.
✨ More Than a Sliding Door. It's a Better Way to Live.
Imagine opening your living room to your backyard with one effortless slide.
Our premium lift & slide doors are designed to transform your home with:
✔ Expansive glass for brighter living spaces
✔ Ultra-smooth, whisper-quiet operation
✔ Premium thermally-broken aluminum frames
✔ Excellent energy efficiency for Canadian weather
✔ Optional stainless steel security mesh for fresh air without bugs
✔ Modern, minimalist design that elevates your home's value
Whether you're renovating your backyard, patio, or building your dream home, this is the upgrade that makes every day feel more luxurious.
🇨🇦 Custom manufactured in Ontario and professionally installed by our in-house team.
📍 Serving Toronto, Markham & the GTA
📩 DM us today for a FREE consultation.
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Contact the business
Telephone
Website
Address
103 Denison Street
Markham, ON
L3R1B5
Opening Hours
| Monday | 9am - 7pm |
| Tuesday | 9am - 7pm |
| Wednesday | 9am - 7pm |
| Thursday | 9am - 7pm |
| Friday | 9am - 7pm |
| Saturday | 9am - 7pm |
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