how to measure a window 
Thornhill, Ontario 

Thornhill - how to measure a window
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How to Measure a Window in Thornhill

Measuring a window might sound like a task you can quickly finish, but doing it the right way takes some patience and care. Whether you want to replace old windows, add new ones, or just need accurate measurements for a home project, getting these numbers right is important. This guide will walk you through simple steps to measure your windows correctly in Thornhill, Ontario. Knowing how to do this will help things run smoothly when you purchase new windows or schedule an installation.

Gathering the Right Tools and Preparing Your Space

Before measuring, you want to make sure you have the right tools. A metal tape measure works best since it doesn’t stretch and gives you more precise numbers. A step stool or ladder might be needed to reach higher windows safely. You’ll also want a notepad and pencil to jot down the measurements clearly. It’s best to clean around and inside your window frame. Dust and dirt can hide nicks or damage in the frame that could affect the measurements.

Start measuring when the window is fully closed. This creates the most accurate numbers for ordering your replacement windows. If your windows have sashes or screens that move, you should remove any removable parts like screens or storm windows before measuring. This ensures that the frame’s real dimensions get captured.

How to Take Window Measurements

You want to measure both the width and height of your window. Measure the width from the inside of the frame. Take the measurement at three spots: near the top, middle, and bottom. Windows can shift or warp over time, so these three measurements might not be exactly the same. Use the smallest width number for accuracy. This helps make sure the new window will fit properly even if your old window frame is a bit uneven.

Next is measuring the height. Like the width, check the height from the inside of the frame at three different points: left side, center, and right side. Again, write down the smallest height. This method minimizes the chance of ordering windows that are too big or too small to fit your existing frame.

Don’t forget to measure the window’s depth too. Depth is important because some replacement windows require a minimum frame thickness. Usually, checking if your frame is at least 3 to 4 inches thick is a good guide. If your window frame is narrower than expected, special window types might be needed.

What to Know About Window Frame Types and Condition

The frame material—wood, vinyl, aluminum, or fiberglass—can affect your measurements and choices. Older windows with wood frames sometimes shrink or swell with moisture, changing size slightly during different seasons. Keeping track of this can help you decide if you need fuller custom windows or stock sizes.

Check the condition of the frame when you measure the window. If the frame is rotted, cracked, or damaged, it needs repair before putting in new windows. This is a good time to inspect and fix any issues with trims or seals to avoid drafts or leaks later.

Final Tips and When to Ask for Help

While measuring windows is a manageable job, it takes precision. Following the method of measuring width, height, and depth carefully will save time and money. Sometimes, a window’s size can be tricky if the frame is not square or the wall isn’t fully even. When this happens or if the measurement process feels confusing, reaching out for professional help is a smart choice. Everest Windows and Doors is known in Thornhill for expert assistance in window sales, service, and installation. Their team can make sure everything is sized right for your project.

For more details on available window styles and options, check out the information provided at Everest Windows and Doors Windows. If you want to see the variety in doors and how they complement new windows, visit Everest Windows and Doors Doors. In case you want to learn about the range of custom features, energy efficiency, and design choices, take a look at Everest Windows and Doors Window and Door Options.

Good window measurements lead to better-fitting windows that keep your home comfortable and safe. Taking the time to measure carefully in Thornhill will support a smooth replacement process. When in doubt or for added peace of mind, trust Everest Windows and Doors to provide the right guidance, service, and installation expertise.

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Projects Done in Thornhill with the Best Windows and Doors Prices

Thornhill Solutions:
by Everest Windows and Doors

Signs You Need to Replace Your Windows and Doors

Older windows and doors can cause drafts, higher energy bills, or let in moisture. If you notice difficulty opening or closing them, foggy glass, or peeling paint, these could be signs it’s time for a change. Cracks or gaps might affect your home’s comfort and safety over time. Replacing them can improve insulation, reduce noise, and update your home’s look.

Located local to Thornhill, Everest Windows and Doors offers quality window and door products built to handle the unique climate. Whether upgrading or building new, they provide durable options to make your home comfortable and secure.

windows and doors replacement for home

Reasons Why You Should Replace Windows and Doors in Thornhill

Replacing your windows and doors is not just an upgrade; it’s a smart investment in your property. Here are the compelling reasons to consider:

Benefits of Energy-Efficient Windows and Doors in Thornhill by Everest

Choosing energy-efficient windows and doors from Everest offers several advantages:
two pannel oak green fiberglass door

Types of Doors We Sell or Produce

Our doors are designed to enhance any entryway with style and functionality:

Types of Windows We Sell and Produce

At Everest Windows and Doors, we offer a diverse range of window styles to cater to different aesthetic preferences and functional needs:
black front door and bay window
door types

Top Reasons Why You Should Select Us for Your Upcoming Installation

Contact Us Now for Your New Windows and Doors in Thornhill, Ontario!

At Everest Windows and Doors in Thornhill, we’re more than just a service provider; we’re your local partner in enhancing your home’s functionality and aesthetic appeal. With our cutting-edge products, expert installations, and dedicated customer service, we ensure that every customer’s needs are met with the highest standards of excellence. Contact us today to learn more about how we can transform your home with the best windows and doors in the industry. Join the many satisfied homeowners in Thornhill who have trusted Everest to elevate their living spaces.

Types of Doors

fiberglass entry single door

Fiberglass Entry Single Door

Seamlessly combines style and durability for lasting appeal with minimal upkeep.
fiberglass entry double door

Fiberglass Entry Double Door

Provides a grand entrance with enhanced durability and design flexibility, ideal for impactful first impressions.
stained glass entry door

Fiberglass Entry 1 Sidelite Door

Adds extra light and elegance to entryways, enhancing style and durability.
fiberglass entry 2 sidelite door

Fiberglass Entry 2 Sidelite Doors

Features a balanced, symmetrical design with two sidelites, offering brightness and durability.
steel entry single door

Steel Entry Single Door

Merges robust security with a sleek design, emphasizing durability and style.
steel double door

Steel Entry Double Door

Enhances home security and aesthetic appeal, ideal for bold, protective statements.
steel entry 1 sidelite door

Steel Entry 1 Sidelite Door

Combines security with modern design, allowing natural light to enhance entryway aesthetics without compromising safety.
steel entry 2 sidelite door

Steel Entry 2 Sidelite Door

Maximizes visibility and light while offering unmatched security and durability in a stylish, contemporary design.
privacy glass entry doors

Privacy Glass Entry Doors

Enhance home aesthetics with energy-efficient options that minimize heat and cold transference.
stained glass entry door

Stained Glass Entry Doors

Add unique charm with colorful designs that improve energy efficiency and home comfort.
steel entry double door

Internal Grill Entry Doors

Integrate security and aesthetics with grills between glass panes maintaining clear views and sunlight entry.
sliding patio doors

Sliding Patio Doors

Perfect for patios, offering large or smaller pane designs with customizable features for style and functionality.

BUY & INSTALL NEW PRODUCTS

Unlock Savings with Everest’s Exclusive Grant Offer to replace Canada Greener Homes Grant in Thornhill, Ontario

Missed out on the Canada Greener Homes Grant? Everest Windows & Doors is stepping in with our exclusive, time-limited Everest Grant to continue supporting eco-friendly home improvements. Homeowners in Thornhill can now unlock significant savings on energy-efficient windows and doors, including discounts, free installation, and locally crafted products backed by a 30 years of industry experience. Don’t miss this chance to upgrade your home and get ready for the Canadian winter of 2025 with Everest’s exceptional offer!

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Energy Efficient Products Reduce Carbon Footprint

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Increase Your Home Real Estate Resale Value

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Energy-Star Certified Windows and Doors

Types of Windows

If you are experiencing any of the problems listed above, it may be time to get new windows. But the question is, which windows are right for you? With so many to choose from, it can be difficult to make a decision.

In this section, we will review the windows that are available so that you can make an educated choice.

Awning windows lift out from the bottom of a window to open at a 45-degree angle. The angle works to protect the home from rain and other elements. They also provide the ultimate in airflow making them ideal for kitchens, bathrooms and other areas that are prone to mold and mildew due to humidity.
To ensure your awning windows are doing all they can to boost your energy efficiency while protecting your household, be sure to look for features like multi-point locking systems and fusion welded corners that will keep out water and air. A multi-chamber construction is also recommended for its ability to increase thermal efficiency, while providing insulation, durability and noise minimalization.
awning window
Casement windows have a crank that allows them to open to a 90-degree angle. The opening provides optimal airflow within interiors.
Triple sealed panes and an optimal number of internal air chambers will ensure the ultimate in energy efficiency while keeping the elements out. An advanced locking system is also recommended for providing safety and security.
casement window

Double slider windows have two panes that move along a track. They open on either side to overlap each other to let air in. They can also fully open into the house to make cleaning easy and provide ultimate air flow. Their ability to provide ventilation makes them ideal for humidity hotspots such as kitchens and bathrooms.

Sliding windows with optimal internal air chambers will be ideal for providing thermal efficiency and insulation.
single and double slider window

Double hung windows feature one pane under another. Both panes can be moved up or down on the track to allow the window to open from the top or bottom.

Double hung windows are a popular design and a favorite among homeowners. Elegant updates in recent years have made them a trendy option for homeowners. A multi-chamber construction will further provide structural integrity.

Because the windows have a flat exterior, they are ideal for patios, walkways and other areas that may be impeded by windows that open outwards.
double hung window

Single slider windows are a variation of double slider windows. Like the double slider variety, they open by sliding along their track, however, they open from one side only. If you like sliding windows, they are a more affordable option.

When low-E or low emissivity, glass is used, it results in the emission of low levels of radiant thermal energy. When combined with a krypton gas insulation, these windows can achieve optimal energy ratings.

single slider window

Single hung windows vary from double hung windows in that only the bottom pane will move when opening the window. They provide a classic style that works well in most interiors.

For the ultimate in energy efficiency, look for windows with a multi-chamber construction and an Energy Star rating.
single hung window

End vent slider windows have a fixed pane in the middle and two sliding windows on either side that move inward toward the center open. They are a good alternative to double slider windows that are better suited to smaller spaces. They also make a good option for those looking for a cost-effective alternative to casement windows.

In most cases, the middle pane will release to open inward to make for easy cleaning while letting in some much-needed fresh air.
end vent slider window
Picture windows are stationary windows that don’t open. Rather, they are meant to let light in, provide a view and work as a decorative element within the home. They are often paired with other types of windows like fixed casement, double hung or side slider.
fixed picture window

Financing Solutions for Your Windows And Doors

Upgrade your home on your terms. We’ve facilitated window and door financing with three easy-to-understand payment options. Start your adaptation today with a financing plan that works for you.

$0 Down, Start Later

Upgrade your home windows and doors now and pay in 90 days. Enjoy your new windows and doors immediately while planning your budget. (Administrative fees may apply).

Predictable Monthly Payments

Break down your investment into 60 convenient monthly installments. Know exactly what you'll pay each month for five years, making budgeting simple and stress-free. (Competitive Interest rates apply)

Extended Payment Options

Get quality windows and doors with our extended payment plans. Lower your monthly commitment by extending payments over a longer term that works for you. (Customized terms available)

Click Below to Read More Review from Everest Windows and Doors Inc.

From the beginning of the consultation with Edward. I was impressed with the attention to detail and description of what the best option would be for my installation of windows and doors. Edward outlined everything step by step and when the install date came everything was precise and as discussed. I couldn’t recommend a more dedicated business to what they provide to their customers.
From the beginning to the end of the installation of my three doors, there is nothing much I can say but the doors are of excellent quality. The installer came ahead of the scheduled time, workmanship is absolutely A1 and Leon the supervisor came to to inspect the installation how it was done. I would surely recommend recommend them to my friends and family.
Really impressed with the quality and care put into our door installation. The work was clean and precise, and they left the area spotless. Great service from start to finish. Highly recommend for any window or door project!
Everest Windows and Doors provided excellent service from start to finish. The quality of the windows is top-notch, and the installation was smooth and professional.
Great experience working with all party’s of the company. From site measure to install. Great respectful company. And very well made products. Over all super happy!
Simply a great job. The job was done fast efficient. The men were polite and knew what they were doing. They cleaned up while they were working and cleaned up after they were done. 100% satisfied. Simply well done. I would recommend this company to anyone out there that's looking to have a window or door installed. They do fantastic work and they are on time and they say what they mean and they mean what they say. They set a date and came on that time and day. Bravo. Satisfied customer 100%
I had a great experience with Everest Windows and Doors. Fantastic job installing my new door. The workmanship was very neat and precise, and they clearly took pride in the quality of their work.

What really impressed me, was the clean up, no mess left behind, which I really appreciated. The entire process felt smooth and professional from start to finish. I’d definitely recommend them to anyone looking for reliable door installation. Special thanks to installer Vladimir your work is amazing!!!
Very Happy with Everest Windows and Doors.
Hired them back inFebruary.2025 and will definitely hire again!
On time, on budget, great job!
I worked with Edward to replace my entry door, who provided expert advice on my options and alternatives suggesting something that best suited my budget and needs. The installation was done very timely and professionally.
Everest windows and doors was amazing! They replaced all of our windows and doors on our home. They were quick and timely and did a great job even though it was very cold out. Would use them again anytime.
From the beginning of the consultation with Edward. I was impressed with the attention to detail and description of what the best option would be for my installation of windows and doors. Edward outlined everything step by step and when the install date came everything was precise and as discussed. I couldn’t recommend a more dedicated business to what they provide to their customers.
From the beginning to the end of the installation of my three doors, there is nothing much I can say but the doors are of excellent quality. The installer came ahead of the scheduled time, workmanship is absolutely A1 and Leon the supervisor came to to inspect the installation how it was done. I would surely recommend recommend them to my friends and family.
Really impressed with the quality and care put into our door installation. The work was clean and precise, and they left the area spotless. Great service from start to finish. Highly recommend for any window or door project!
Everest Windows and Doors provided excellent service from start to finish. The quality of the windows is top-notch, and the installation was smooth and professional.
Great experience working with all party’s of the company. From site measure to install. Great respectful company. And very well made products. Over all super happy!

Get answers to your
frequently asked questions

How do I accurately measure a window for a replacement?

Measure the width from the inside of the window frame, from jamb to jamb, at the top, middle, and bottom. Use the smallest measurement as the width. Measure the height from the sill to the head jamb at the left, middle, and right sides, using the smallest measurement as the height. Record these measurements in inches to ensure a proper fit.

What tools are necessary to measure a window correctly?

You will need a steel tape measure with clear markings, a notepad or measurement sheet to record data, and potentially a level to ensure measurements are taken straight. Always use a reliable measuring tool to guarantee accuracy.

When is the best time to measure windows for installation?

Measure windows during daylight hours when visibility is optimal. Avoid measuring during extreme weather conditions like rain or snow, which can affect accuracy. Make sure the window is closed and free from obstructions before starting measurements.

How should I measure sliding door frames for replacement or repair?

Measure the width between the inside edges of the door frame at three points: top, middle, and bottom, using the smallest figure. For height, measure from the threshold to the header at the left, center, and right sides. Record the smallest height measurement. Ensure the measurements are taken inside the frame for accuracy.

Can I measure windows and doors myself or should I hire a professional?

You can measure windows and doors yourself if you have basic tools and clear instructions. However, hiring a professional ensures precision and reduces the risk of costly errors during ordering or installation, especially when dealing with custom sizes or complex installations.

What common mistakes should I avoid when measuring windows?

Avoid measuring only one area of the window frame, as frames can be uneven. Do not measure from outside the frame for replacement windows. Always use the smallest width and height measurements. Also, avoid measuring damaged or warped frames without professional assessment.

How does weather affect window and door installation?

Extreme weather can impact installation quality. Cold weather may cause materials to contract, while heat can cause expansion, affecting fits and seals. Rain or moisture can interfere with sealants and adhesives. For best results, schedule installation during mild, dry conditions.

What is the typical lead time for window replacement in Thornhill?

Lead time varies based on material availability and customization but typically ranges from two to six weeks. Custom window orders may take longer. It is advisable to check with your supplier or installer for specific timelines to plan accordingly.

What types of windows are recommended for energy efficiency in Thornhill?

Double- or triple-pane windows with low-emissivity (Low-E) coatings and gas fills such as argon or krypton offer excellent insulation. Vinyl, fiberglass, and wood frames with proper sealing contribute to energy savings. Choose windows rated for your climate zone and professional energy star certifications.

How can I ensure proper sealing when installing new windows or doors?

Use high-quality weatherstripping and sealants specified for windows and doors. Ensure that frames are plumb and level before applying sealants. Insulate gaps with foam or caulk as appropriate. Professional installation helps verify complete and even sealing to prevent drafts and moisture intrusion.

Welcome to Thornhill

Thornhill is a community known for its quiet streets and friendly neighborhoods. People who live here enjoy a calm lifestyle while still being close to many important places. The area has a mix of houses and shops, making it easy for residents to find what they need without going far. Walking around Thornhill feels like visiting a place where neighbors know each other and children play outside safely.

Living in a Comfortable Environment

One of the reasons Thornhill stands out is its focus on comfort and home quality. Many homes aim to keep their windows and doors strong and efficient. For example, Everest Windows and Doors offers products that help with keeping homes warm in the winter and cool in the summer. This makes living in Thornhill more pleasant no matter the season. Good quality windows and doors also help reduce noise from nearby roads, adding to the peaceful atmosphere.

Community Spaces and Parks

Outdoor areas in Thornhill invite families and visitors to enjoy fresh air and open spaces. Parks here often have playgrounds and fields where kids can play sports or just run around. These green spaces also provide spots for people to relax or take their dogs for walks. Spending time outside in Thornhill shows just how much the community values nature and healthy living. The parks are well-maintained and safe for all ages.

Schools and Education

Families with children find Thornhill to be a good choice because of the schools available. The community supports learning with several schools close by, offering education in a friendly and welcoming environment. Students have access to programs that encourage growth in many areas, including reading, science, and arts. This helps children develop their skills in a supportive setting. The schools often work together with local groups to create fun and educational events for the whole family.

Easy Access and Services

Getting around Thornhill is simple thanks to well-kept roads and public transportation options. Residents can travel to nearby areas for shopping, work, or entertainment without hassle. While the community enjoys a peaceful vibe, it is easy to reach larger city centers. This balance makes Thornhill a place where people feel they have the best of both worlds. When it comes to home improvements, many homeowners choose Everest Windows and Doors for their reliable and stylish products, which add to the beauty and function of houses here.