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

06/18/2026

🇨🇦 Not Every Home Fits Standard Windows — Why Should Yours?

This GTA project features a fully custom-shaped thermally-broken aluminum window system paired with a premium sliding door, designed to perfectly match the home’s vaulted architecture.

✨ The custom triangular transom window was specially engineered to fit the exact roofline, creating a clean modern look while maximizing natural light.

✔ Custom-shaped windows
✔ Thermally-broken aluminum
✔ Premium sliding door system
✔ Made for Canadian weather
✔ Designed & manufactured to fit your home perfectly

From triangle windows to oversized glass walls, OPT Windows specializes in custom solutions that standard window companies can’t provide.

📩 Message us for a FREE estimate

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

06/17/2026

🇨🇦 Your Front Entrance Sets the First Impression of Your Home.

A custom porch enclosure does more than keep the weather outside — it transforms your entrance into a more functional, secure, and premium space that you'll enjoy every day.

✨ Why GTA homeowners are upgrading:

✔ Creates a beautiful, finished front entrance
✔ Adds an extra layer of security and privacy
✔ Helps reduce cold drafts and improve comfort
✔ Provides a convenient space for deliveries, shoes, and everyday storage
✔ Enhances curb appeal and adds value to your home

Many of our customers say the same thing after installation:

"It feels like we added an entirely new space to our home."

At OPT Windows, our porch enclosures are custom-designed using premium aluminum systems built specifically for Canadian weather and tailored to complement your home's architecture.

📍 Manufactured & installed by OPT Windows
📏 Free in-home measurement available
🔧 Installed by our own professional team — no subcontractors

Serving Markham, Toronto & the GTA.

📩 Message us today for a free consultation.

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

🚪 More Than a Screen Door. A Stronger First Line of Defense.When it comes to home security, most break-ins happen at the...
06/16/2026

🚪 More Than a Screen Door. A Stronger First Line of Defense.

When it comes to home security, most break-ins happen at the weakest entry points.

That's why more GTA homeowners are upgrading to our premium Security Screen Doors — designed to provide enhanced protection, secure ventilation, and a modern appearance without compromising curb appeal.

🔒 Heavy-duty aluminum frame
🛡 High-strength stainless steel security mesh
⚡ Multi-point locking system
🌬 Enjoy fresh air with added peace of mind
🐞 Keeps insects out while letting airflow in
🏡 Clean, modern design that complements your home

Whether it's your front door, side entrance, or backyard access, a Security Screen Door adds an extra layer of protection where it matters most.

🇨🇦 Custom manufactured and professionally installed by OPT Windows Ltd.

📍 Serving Toronto, Markham & the GTA

📩 Message us today for a FREE quote
📞 +1 (365) 899-0345
📧 [email protected]
📍 103 Denison St, Unit 2, Markham, ON L3R 1B5

🇨🇦 Upgrade Your Entryway with a Reinforced Security PanelMore GTA homeowners are choosing reinforced security panels for...
06/11/2026

🇨🇦 Upgrade Your Entryway with a Reinforced Security Panel

More GTA homeowners are choosing reinforced security panels for added protection, privacy, and a cleaner modern entrance design.

Our Security Panel system features:

🛡 Reinforced heavy-duty aluminum structure
🔒 Enhanced protection for entry doors
🏡 Modern minimalist appearance
🌧 Built for Canadian weather conditions
✨ Clean, seamless design that upgrades curb appeal

Perfect for front entrances, side doors, and custom security door systems.

✔ Custom manufactured to fit your home
✔ Professional installation by OPT Windows
✔ Serving Toronto, Markham & the GTA

📩 Message us today for a FREE quote

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

🇨🇦 More Than Just a Screen Door — It’s an Upgrade to Your Home SecurityMany GTA homeowners are upgrading to Security Scr...
06/09/2026

🇨🇦 More Than Just a Screen Door — It’s an Upgrade to Your Home Security

Many GTA homeowners are upgrading to Security Screen Doors for one simple reason:
They want to feel safer while still enjoying fresh air and ventilation.

Our upgraded 2026 Security Screen Door features:

🔒 Heavy-duty stainless steel mesh
🛡 Reinforced aluminum frame with multi-point locking
🌬 Ventilation without sacrificing security
🐜 Keeps bugs & insects out
🏡 Modern appearance that matches today’s homes

Perfect for front doors, side doors, and backyard entrances.

✔ Custom sized for your home
✔ Professional installation
✔ Built for Canadian weather

At OPT Windows, we specialize in premium security doors designed to provide both protection and style.

📍 Serving Toronto, Markham & the GTA

📩 Message us today for a FREE quote

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

🇨🇦 Not Every Home Fits a Standard Window. Why Should Your Windows?This recent GTA project features a fully custom-shaped...
06/04/2026

🇨🇦 Not Every Home Fits a Standard Window. Why Should Your Windows?

This recent GTA project features a fully custom-shaped thermally-broken aluminum window system paired with a premium sliding door — designed to perfectly match the home's unique vaulted architecture.

We can design, manufacture, and install a solution tailored specifically to your home.

📩 Message us for a FREE estimate

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

🏡 Another Beautiful Porch Enclosure Completed in the GTA!This homeowner originally wanted a simple solution to block col...
06/03/2026

🏡 Another Beautiful Porch Enclosure Completed in the GTA!

This homeowner originally wanted a simple solution to block cold winter drafts and keep bugs out during the summer.

After installation, the biggest change wasn't just comfort—it completely transformed the look and feel of the front entrance.

☀️ Bright natural sunlight now fills the entry space
🤍 The clean white design creates a timeless, elegant look
✨ The entire front of the home feels more open, welcoming, and premium

Many homeowners are surprised by how much a porch enclosure improves their home's curb appeal. In fact, neighbors often stop and take a second look after the upgrade.

Beyond the beautiful appearance, a porch enclosure also provides:

✔ Extra functional entry space
✔ Protection from wind, rain, and snow
✔ Reduced heat and cooling loss
✔ A more comfortable transition space year-round
✔ Added security and peace of mind

This project features a bright white aluminum frame paired with large glass panels, allowing plenty of natural light while maintaining a clean and modern appearance.

It's more than just an enclosure—it's an upgrade you'll notice every time you come home.

📍 Serving the GTA
✅ Free Measurement
✅ Custom Design & Manufacturing
✅ Professional Installation
✅ Factory Direct Pricing

📩 Message us today for a FREE quote!
📞 +1 (365) 899-0345
📧 [email protected]
📍 103 Denison St, Unit 2, Markham, ON L3R 1B5

06/01/2026

🏡 Another Beautiful Porch Enclosure Completed in the GTA!

This homeowner originally wanted a simple solution to block cold winter drafts and keep bugs out during the summer.

After installation, the biggest change wasn’t just comfort—it completely transformed the look and feel of the front entrance.

☀️ Bright natural sunlight now fills the entry space
🤍 The clean white design creates a timeless, elegant look
✨ The entire front of the home feels more open, welcoming, and premium

Many homeowners are surprised by how much a porch enclosure improves their home’s curb appeal. In fact, neighbors often stop and take a second look after the upgrade.

Beyond the beautiful appearance, a porch enclosure also provides:

✔ Extra functional entry space
✔ Protection from wind, rain, and snow
✔ Reduced heat and cooling loss
✔ A more comfortable transition space year-round
✔ Added security and peace of mind

This project features a bright white aluminum frame paired with large glass panels, allowing plenty of natural light while maintaining a clean and modern appearance.

It’s more than just an enclosure—it’s an upgrade you’ll notice every time you come home.

📍 Serving the GTA
✅ Free Measurement
✅ Custom Design & Manufacturing
✅ Professional Installation
✅ Factory Direct Pricing

📩 Message us today for a FREE quote!
📞 +1 (365) 899-0345
📧 [email protected]
📍 103 Denison St, Unit 2, Markham, ON L3R 1B5

EntrywayDesign ModernHome CurbAppeal TorontoRenovation HouseUpgrade

06/01/2026

🇨🇦 Fresh Air, Better Security, Zero Bugs.

A window should do more than just open and close.

Our premium casement windows combine smooth ventilation, enhanced security, and modern design—built specifically for Canadian homes and weather.

✔ Thermally-broken aluminum frame
✔ Heavy-duty stainless steel security screen
✔ Enjoy fresh air without insects
✔ Adjustable opening angles for flexible ventilation
✔ Premium friction hinges that hold different positions
✔ Beveled frame design for a larger viewing area
✔ Superior strength and durability
✔ Built for Canadian weather conditions

This recent GTA installation gives the homeowner better airflow, improved security, and a clean modern look—all without compromising comfort.

Looking to upgrade your windows?

📩 Message us for a FREE estimate
📞 +1 (365) 899-0345
📧 [email protected]
📍 103 Denison St, Unit 2, Markham, ON L3R 1B5

Serving Toronto & the GTA

⭐️ Real Reviews From Real GTA Homeowners ⭐️Nothing speaks louder than the experiences of our customers.From Security Scr...
05/29/2026

⭐️ Real Reviews From Real GTA Homeowners ⭐️

Nothing speaks louder than the experiences of our customers.

From Security Screen Doors and Porch Enclosures to Custom Sliding Doors, we're proud to help homeowners across Toronto and the GTA improve their homes with products built for security, comfort, and long-term performance.

✅ Premium Materials
✅ Professional Installation
✅ Custom-Made Solutions
✅ Hundreds of Happy Homeowners

Thank you to all of our customers for trusting OPT Windows with your home upgrades. Your support means everything to us.

📩 Message us today for a FREE quote

📞 +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

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