GTA • Hamilton • Barrie
This Winter • Save Up to 30% • Ends March 31
Enjoy a more comfortable, energy efficient and secure home.
Enjoy a more comfortable, energy efficient and secure home.
Windows and Doors Replacement Markham
5.0 | Rated by 300+ homeowners
5.0 | Rated by 300+ Homeowners
Secure and confidential.
One-day installation in most cases
Transferable lifetime warranty
Licensed and insured installers
Transferable lifetime warranty
One-day installation in most cases
Licensed and insured installers
SAVE 30%
ENDS MAR 31
We Hear You
Water Leaks
Mold Buildup
Foggy
Glass
Security Concerns
Cold Drafts
Outside Noise
Rotting Frame
Broken Hardware
If these sound familiar, you’re not alone. We handle window replacement Markham projects every day.
Window issues can quickly affect comfort, efficiency, and home security. Left unresolved, these problems only worsen and strain heating and cooling systems, and damage your home. That’s why homeowners rely on our windows and doors Markham services for dependable performance and lasting comfort.
Real Results from Real Window Replacements
Trusted by 300+ homeowners like you
Andrea McMillan
North York, ON
⭐⭐⭐⭐⭐
My experience with Windowsville was fantastic. They were prompt from the start, provided a quick quote, and worked within my budget. Communication was excellent—they provided me with plenty of notice to prepare for the installation. On installation day, their team was efficient, friendly, and treated my home with care. The new windows and front door look great, and I’m extremely happy with both the service and the quality of the products.
Naaz Mulji
Windowsville is absolutely amazing. From Arik in sales, Arthur in operations and Milan and Billy in installation. The whole process from transaction to installation was totally seamless. Windowsville is professional and trustworthy. They won't push you to buy. In fact, I waited three months to make my decision to replace all my windows and doors. Great quality and superb installation. Thank you very much for enhancing the look of my house and saving me a lot on my energy bill.
Whitby, ON
⭐⭐⭐⭐⭐
Thank you to Windowsville's team for an outstanding job! We couldn't be happier with the windows and sliding glass door that they put for the entire house. They were responsive in communication throughout the process. The 2 gentlemen that came to install everything were very nice and professional. In strongly recommend Windowsville's team for anyone who wants quality product and outstanding customer service. Thank you!
Concord, ON
Yan Krupnik
⭐⭐⭐⭐⭐
When we complete window replacement in Markham, we install a fully sealed, insulated system to reduce heat loss, noise, and moisture. Choosing a trusted window company in Markham helps your home stay warmer, quieter, and look better.
We Solve Energy Loss Problems, Not Just Replace Windows
Our Window Installers Handle Everything, You Don’t Lift a Finger
Installed in Just One Day
Pick a time that works for you and relax. Our window replacement service in Markham handles everything. We manage the installation, logistics, and paperwork while you choose your preferred energy-efficient window style and features.
You’ll work with a dedicated project manager who keeps you updated and ensures your windows and doors Markham project is completed correctly from the initial visit to the final walkthrough.
We respect your schedule. Most window replacement projects in Markham finish in one day. We will protect your home, remove the old windows, install the new system, and leave everything clean so you enjoy a quieter, more comfortable home by evening.
Stop Wasting Time on Temporary Fixes
We Handle Everything,
You Don’t Lift a Finger
Our Canadian-built, high-performance windows and doors solve the real problem. At Windowsville, we don’t do quick patches. As a reliable Markham windows and doors company, we install long-lasting, energy-efficient products designed for Canadian weather.
You Get One Point of Contact, From Start to Finish
Experience The Next-Level Performance
Better at preventing heat from escaping your home during cold weather and keeping that heat out during hot weather.
60%
IMPROVE HOME INSULATION
UP TO
ENHANCE SOUNDPROOFING
50%
UP TO
Effectively blocks out noise from the external environment and provides a quieter and more peaceful indoor environment.
SLASH ENERGY BILLS
25%
UP TO
Reducing energy loss lowers heating and cooling needs, utility bills and reduces environmental impact.
The results depend on multiple factors beyond the qualities of the windows and doors and are not guaranteed to be the same in all circumstances.
Double Pane Window
Triple Pane Window
Double Pane
Triple
Pane
Better insulation for year-round comfort
Reduced outside noise for a quieter home
Lower energy bills with improved efficiency
Less condensation and clearer windows
Reliable performance in Canadian weather
Everything You Need in One Place
Windowsville provide complete window and door solutions for homeowners. From expert consultation to supplying premium products, professional installation, and ongoing service. Our team handles every part of your project with care and accountability.
WE CONSULT
WE SUPPLY
WE INSTALL
WE SERVICE
How We Bring Better Windows to Your Home
1
We Listen & Assess
We Build Your Windows
2
We Install & Seal with Care
3
We visit your home to assess your needs, take precise measurements, and guide you through the best window options for your style, comfort, and budget.
Your chosen windows are made to order using high-quality materials and energy-efficient technology to ensure a perfect fit and lasting performance.
Our trained installers remove your old windows, fit the new ones with precision, and insulate every gap for an airtight, energy-efficient seal, ready to perform from day one.
Another Successful Window Replacement in Vaughan
A full window replacement Markham project does more than fix drafts. It changes how your home looks and feels, giving it a fresh and efficient appearance the moment you arrive. New windows are one of the best ways to boost comfort, value, and curb appeal. Here is a real example of what is possible.
BEFORE
AFTER
Triple-Pane
Delivers warm winters, cool summers, and quieter living spaces year-round, while reducing energy costs and enhancing comfort in every corner of your home.
Argon Gas-Filled
Invisible insulation between glass panes slows heat transfer, reducing drafts and keeping your indoor temperature steady in any season.
LowE Coating
Keeps natural light flowing in but stops the fading and heat damage caused by UV and infrared rays, protecting your home’s interior for years to come.
Smart Window Features, Real-Life Benefits
Fusion-Welded Frames
Eliminates weak spots in the frame, boosting structural integrity and ensuring consistent insulation over the life of the window.
Cleaning-Friendly
Innovative hinges and tilt-in frames, designed for convenience, and lets you clean both sides of the glass from inside your home, no ladders required.
Multipoint Locking System
Locks engage at multiple points along the frame, creating a tighter seal for better security and energy efficiency.
Some of Our Most Popular Window Options
Our entire window line is Energy Star certified and meets the requirements for the Ontario window rebate program.
Casement Window
Awning Window
Sliding Window
These most popular windows open from either side outwards and provide the best airflow.
These windows swing out from the top. They are popular for allowing them to stay open during precipitation.
The most practical and affordable windows style that allows the window to open for ventilation from both sides.
These windows slide up and down, allowing airflow from both the top and the bottom.
Hung Window
Bay Window
A combination of three windows that extend out from the main wall. They provide the illusion of a more spacious room.
Bow Window
A combination of four or more windows. Provide a panoramic view while adding an accent to the exterior of the house.
Some of Our Most Popular Door Options
We supply and install premium steel, fiberglass, and vinyl exterior doors. All made in Canada and built to perform in the Canadian climate.
Steel Door
Fiberglass Door
Engineered for maximum security, energy efficiency, and long-lasting durability with a clean, modern finish.
Delivers the perfect balance of durability, energy efficiency, and authentic wood-grain style with virtually no maintenance.
Creates a seamless transition between indoor comfort and outdoor living while adding style and natural light to your space.
Year-round comfort and effortless access to your outdoor space, all with a clear, unobstructed view of your backyard or patio.
Patio French Door
Patio Sliding Door
Recent Window Replacements Vaughan Projects
Every project is unique, but the outcome is always the same. Homeowners enjoy improved comfort, lower energy costs, and a fresh look that adds lasting value. Explore a few of our recent Markham window replacement projects to see the level of detail and care we bring to every home.
Here is What Sets Windowsville Apart
Window replacement is a major decision, and not every company offers the same quality or service. Take a quick look at how we compare on product, installation, warranty, and customer care so you can choose with confidence.
Yes
Trained, certified installers
Up to 50 ER
Lifetime
Most are completed in one day
Flexible monthly plans
15+ window options
100% lead-free uPVC
Multi-point locking system
3 1/4 and 4 1/2
Windowsville
Other Companies
Not guaranteed
Varies by crew
Industry basic
5-10 years
Often longer and inconsistent
Not always available
5-8 options
Lower grade or mixed
Dual-point or similar
3 1/4 only
Energy Star® Certified
Professional Installation
Energy Rating
Warranty
Project Timelines
Financing
Product Range
Material Quality
Hardware
Frame Size
Energy Star®
Pro Installation
Energy Rating
Warranty
Timelines
Financing
Product Range
Material Quality
Hardware
Frame Size
✅ Certified
✅ Trained crews
✅ Up to 50 ER
✅ Lifetime
✅ Usually one day
✅ Flexible plans
✅ 15+ window options
✅ 100% virgin uPVC
✅ Multi-point system
✅ 3 1/4 and 4 1/2
Easy & Flexible Payment Plan
Pay as low as
$29/month
Replacing windows and doors with a flexible payment plan is a smart financial choice. Financing reduces the upfront cost of upgrading to energy-efficient products, so you enjoy lower energy bills and better comfort without the strain of large out-of-pocket expenses.
*
Serving the GTA and beyond!
We’re a proud Markham windows and doors company. Homeowners across the region trust us for reliable, energy-efficient solutions.
Frequently Asked Questions
A typical window replacement Markham project begins with an in-home assessment, detailed measurements, and custom manufacturing. Most installations are completed in one day, and our team manages everything from preparation to cleanup.
A reliable window company in Markham provides certified installers, Energy Star products, transparent pricing, and strong warranties. They guide you through options, explain what to expect, and handle the entire project with professionalism.
Yes. We offer multiple energy-efficient choices for window replacement in Markham, including triple-pane upgrades, argon gas fills, and Low-E coatings. These improvements help reduce heat loss, lower energy bills, and improve home comfort.
A Markham windows and doors company typically provides installation, replacement, and full-service support for all major window styles and door types. This includes measurement, manufacturing coordination, installation, finishing, and after-service care.
Most Markham window installations are completed in a single day. Our installers arrive fully prepared, protect your home, remove the old units, install the new ones with precision, and leave everything clean before they leave.
Ready to discuss your project?
Our team will follow up right away.
Energy Star® certified product
Government rebate available
Flexible financing options
Lifetime warranty
This season only - save up to 30%
⭐ ⭐ ⭐ ⭐ ⭐ 5.0 | Based on 300+ reviews
⭐ ⭐ ⭐ ⭐ ⭐ 5.0 | Based on 300+ reviews
© 2026 Windowsville Windows and Doors. All Rights Reserved.
© 2026 Windowsville Windows and Doors.
All Rights Reserved.
9131 Keele Street, Unit 4A-88 Concord, ON, L4K 0G7
Local: (905) 790-0909
