OPT Windows Ltd

OPT Windows Ltd Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from OPT Windows Ltd, Home window service, 103 Denison Street, Markham, ON.

Premium Thermally-broken Aluminum Windows & Doors, Security Doors & Porch Enclosures. 🇨🇦 Made in Toronto
💰 Cost-Effective | 🔧 Professional Installation | Serving Toronto & GTA

🏡 Upgrade Your Entrance with a Premium Porch EnclosureYour front entrance is one of the first things people notice about...
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

08/24/2026

🏡 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.

A porch enclosure is one of those upgrades you don’t realize you need — until you have one. 🇨🇦🏡For Canadian homes, it’s ...
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.

07/27/2026

🇨🇦 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.

07/21/2026

🇨🇦 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.

🇨🇦 You don't realize how valuable a porch enclosure is... until you've lived through a Canadian winter.One cold day, one...
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.

06/29/2026

✨ 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.

🇨🇦 More Than a Sliding Door. It's a Lifestyle Upgrade.Imagine opening your living room to expansive glass views, natural...
06/24/2026

🇨🇦 More Than a Sliding Door. It's a Lifestyle Upgrade.

Imagine opening your living room to expansive glass views, natural light, and fresh air—without worrying about bugs or compromising security.

✨ Minimalist oversized glass for a brighter, more luxurious space
🌿 Bring your outdoor views indoors
🌬 Enjoy fresh air with stainless steel security mesh screens
🦟 Bug-free ventilation all summer long
🔒 Enhanced security without sacrificing style
🛠 Premium thermally-broken aluminum construction built for Canadian weather

The right door doesn't just connect your indoor and outdoor spaces—it transforms how your home feels every day.

📩 DM us for a FREE consultation.
📍 Serving Markham, Toronto & the GTA

06/22/2026

🇨🇦 More Than a Porch. It's an Upgrade to How You Live.

A premium porch enclosure adds more than protection from wind and snow.

✨ A refined, enclosed entrance
🔒 An extra layer of security with a multi-point locking system
❄️ Better comfort by reducing cold drafts
📦 A secure space for packages and everyday storage
🏡 A cleaner, more luxurious look for your home
🛠 Premium thermally-broken aluminum construction built for Canadian weather
🌬 Casement windows with stainless steel security screens for fresh air, ventilation, and bug-free living

Because luxury isn't just about appearance—it's about comfort, security, and thoughtful design.

📩 DM us for a FREE consultation.

📍 Serving Markham, Toronto & the GTA

06/20/2026

🇨🇦 More Than a Porch. An Extra Layer of Security for Your Home.

A premium porch enclosure isn't just about blocking wind and snow — it's about creating a safer, more comfortable, and more refined entrance experience.

Our custom aluminum porch enclosures are engineered with a reinforced multi-point locking system, giving your home an additional layer of security while enhancing its appearance and functionality.

✨ Why homeowners are upgrading:

🔒 Reinforced Multi-Point Locking System for enhanced security
🏡 Creates a private, enclosed entry space
❄ Helps reduce cold drafts and improve comfort
📦 A secure area for packages and everyday storage
✨ Elevates curb appeal with a clean, modern appearance
🛠 Premium thermally-broken aluminum construction built for Canadian weather

Whether it's your front entrance, side door, or basement walkout, a professionally designed porch enclosure transforms an ordinary entrance into a secure and welcoming extension of your home.

📍 Manufactured & installed by OPT Windows
📏 Custom designed for your home
🔧 Installed by our own professional team — no subcontractors

Serving Markham, Toronto & the GTA.

📩 DM us today for a free consultation.

📞 +1 (365) 899-0345
📧 [email protected]
📍 103 Denison St, Unit 2, Markham, ON L3R 1B5

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

Telephone

+13658990345

Website

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