Measure Window Blinds Like a Pro: Expert Tips for a Flawless Fit
Ever wonder why some window blinds just don't look right? They might be too wide, too short, or hang awkwardly. This often comes down to one crucial step many people dread: measuring. Getting the right measurements is key, not just for how your blinds look, but for how well they work. Ill-fitting window coverings can be a real headache, letting in too much light, lacking privacy, or simply falling apart faster due to added stress.
Are you looking at your windows right now, thinking about new blinds? Maybe you're wondering if you can really measure those tricky spots yourself. Good news: you absolutely can! Most people find that with the right guidance, measuring for blinds is a straightforward process. This guide will walk you through everything you need to know. You will be able to avoid common mistakes, ensuring your new window treatments fit perfectly and enhance your home's style and function. For more information on different options, you can also explore our types of window blinds guide.
Gather Your Tools and Get Ready to Measure
Before you dive into measuring, it's smart to gather everything you need. Think of it like a chef preparing ingredients before cooking. Having your tools ready means you won't have to stop mid-task, making the whole process smoother and more accurate. This avoids frustration and helps you get the job done right the first time.
The Right Tools for the Job
You don't need a huge toolkit for this, just a few key items. These simple tools will ensure your measurements are precise, which is crucial for a perfect blind fit.
Steel Measuring Tape: This is your most important tool. A steel tape measure is much better than a fabric one. Why? Fabric tapes can stretch and warp, leading to inaccurate measurements. Steel tapes stay rigid, giving you consistent and reliable numbers every time. Look for one that's at least 25 feet long for versatility.
Pencil: For marking your measurements on paper.
Paper or Notepad: To record your dimensions clearly. Don't rely on memory; jot it down!
Step Stool or Ladder: If your windows are high or hard to reach, a sturdy step stool or ladder is a must. Safety first!
Calculator (Optional): Handy for quick additions if you're measuring multiple sections or doing conversions.
Preparing Your Window for Measurement
Think about it: you wouldn't paint a dirty wall, right? The same goes for measuring your windows. A bit of preparation goes a long way in getting accurate results and preventing future issues.
Clean the Sill and Frame: Dust and debris can get in the way, affecting your measurements. Give the window sill, frame, and any areas where the blinds will sit a quick wipe down. This ensures nothing interferes with your tape measure.
Remove Old Hardware: If you're replacing existing blinds, take down any old brackets, screws, or hardware. These can obstruct your measurements or interfere with the new blind installation.
A clean slate is always best. Sometimes, people skip this and then wonder why their new blinds don't quite fit or hang properly. For tips on avoiding common issues, check out our DIY blind installation tips.Check for Obstructions: Look around the window. Are there any handles, latches, security sensors, or molding that might get in the way of your new blinds? You need to account for these when measuring, especially for inside-mount blinds.
Inside Mount vs. Outside Mount: Choosing Your Style
When you pick new blinds, one of the first big choices you face is whether to go with an inside mount or an outside mount. This decision really impacts how your blinds look and how well they work. An inside mount means the blinds fit snugly within your window frame, giving a clean, built-in appearance. On the other hand, an outside mount places the blinds over the window opening and frame, often extending beyond it.
Which one is right for you? It often depends on a few things. Consider your window's depth. If your window frame isn't deep enough, an inside mount might not work. Also, think about any obstructions like window latches or handles that could get in the way. Finally, how much light control and privacy do you want? Outside mounts usually offer more light blockage because they cover a larger area. For more insight into different options, you can also explore our guide to modern window blinds.
How to Measure for Inside Mount Blinds
Measuring for inside mount blinds is all about precision. You want the blinds to fit just right, without rubbing or leaving big gaps. The goal is a seamless, custom look.
Here's how to get those accurate measurements:
Measure the Width: You'll need to measure the width of your window opening in three different spots:
At the top of the window frame.
In the middle.
At the bottom. This is important because window frames aren't always perfectly square. Wood can expand or contract over time, leading to slight variations. Always use the smallest of these three measurements. This ensures your blinds will fit into the tightest spot without any issues.
Measure the Height: Similar to the width, measure the height of your window opening in three places:
At the left side.
In the center.
At the right side. Again, take the smallest of these three measurements. This prevents your blinds from being too long and dragging on the sill.
What to do with the numbers: You've got your smallest width and smallest height. These are the exact measurements you'll provide to the blind manufacturer or retailer. Many companies will make small deductions from these numbers (usually about 1/4 to 1/2 inch) to ensure the blinds fit perfectly and operate smoothly without rubbing against the frame. Don't make deductions yourself unless specifically instructed by the blind manufacturer!
How to Measure for Outside Mount Blinds
Outside mount blinds provide fantastic light control and can even make your windows appear larger. They also work great if your window frame isn't deep enough for an inside mount or if you have obstructions like crank handles.
Follow these steps for an accurate outside mount:
Decide on Overlap: First, decide how much you want your blinds to overlap the window frame on each side. A common overlap is 1.5 to 3 inches beyond the window trim or frame. This extra coverage helps block more light and offers increased privacy. A larger overlap creates a more dramatic look and better room darkening, as discussed by experts on home design and window treatments.
Measure the Desired Width:
Measure the full width of your window, including any trim or molding.
Add your chosen overlap amount to each side. For example, if your window is 30 inches wide and you want a 2-inch overlap on each side, your total measured width will be 30 + 2 + 2 = 34 inches. This number is what you'll provide.
Measure the Desired Height:
Measure from where you want the top of your headrail to sit (often 2-3 inches above the window frame) down to where you want the bottom of the blinds to reach. This might be the window sill, or even the floor for floor-length options.
Make sure this measurement covers the entire area you want the blinds to span, including any trim or molding you wish to conceal. Remember, this total height measurement will be your order size.
Outside mount blinds are quite flexible, allowing you to choose how much of your window and surrounding wall they cover. This gives you more control over light leakage and the overall aesthetic.
Pro Tips for Accurate Measurements Every Time
Getting the measurements right for your new blinds can feel like a tall order, but with a few pro tips, you'll be a measuring master in no time. Precision is your best friend here. Even a small error can lead to blinds that don't quite fit, leaving annoying gaps or looking out of place. We want your new window treatments to look fantastic and perform perfectly.
Specific Considerations for Different Blind Types
While the basic steps for measuring windows are pretty consistent, some blind types have their own specific quirks you'll want to consider. Knowing these small differences can save you a lot of hassle and ensure your blinds operate flawlessly.
Roller Shades: These are pretty straightforward. Just make sure you account for the fabric width versus the hardware width. The fabric on roller shades is usually a bit narrower than the entire headrail assembly if you're doing an inside mount, so confirm with your manufacturer how they specify measurements (fabric width or total width).
Roman Shades: When measuring for Roman Shades, think about how they stack when fully raised. You'll want to ensure there's enough clear space above the window if you're using an outside mount so they don't block too much of your view.
Vertical Blinds: These are typically for larger windows or sliding glass doors. For vertical blinds, pay close attention to the bottom. If they're too long, they'll drag on the floor or sill. Measure to the exact point you want the vanes to end, usually about 1/2 to 1 inch above the floor.
Venetian Blinds: With Venetian blinds, the slats themselves are sturdy. When measuring, focus on getting the exact width and height. Remember, the slats will stack tightly when raised, so ensure there's enough depth for them to operate smoothly if you choose an inside mount.
Wood and Faux Wood Blinds: Both wood blinds and faux wood blinds have a bit more weight and thickness compared to fabric shades. If you're opting for an inside mount, confirm your window frame has enough depth so the blinds don't stick out too far.
Avoiding Common Measuring Mistakes
It's easy to make small errors, especially when you're focused on getting every number just right. But knowing what to look out for can help you side-step these mistakes and save you from ordering blinds that don't fit. You want to get it right the first time, don't you? This saves you time, money, and a whole lot of frustration.
Here are some common measuring pitfalls and how to avoid them:
Not Measuring in Three Spots: As we discussed, windows are rarely perfectly square. Always measure the width (top, middle, bottom) and height (left, center, right) in at least three different places. Always use the smallest of these measurements for inside mounts. This common recommendation from blind experts ensures your blinds will fit even the tightest spots.
Rounding Incorrectly or Too Much: Precision matters. Round your measurements to the nearest eighth of an inch. Don't eyeball it or round to the nearest whole inch. Every little bit counts.
Mixing Up Width and Height: This is a classic mistake. Always write down your width first, then your height. For example, "36 1/8 W x 48 1/2 H." Double-check your notes before you order.
Assuming All Windows are the Same: Even if windows look identical, measure every single one. Minor differences can exist, especially in older homes, leading to annoying fit issues. Don't assume sizes are consistent.
Forgetting to Double Check: After you've taken your measurements, go back and do it all again. It's like proofreading an important document. Measure twice, order once. This helps catch any overlooked errors.
Not Accounting for Obstructions: We touched on this earlier, but it bears repeating. Window handles, alarm sensors, or unique trim can interfere with how your blinds hang. Make sure your measurements consider these.
By keeping these tips and blind-specific quirks in mind, you’ll avoid the most common pitfalls and set yourself up for a smooth installation—no surprises, no second-guessing, just perfectly measured blinds that look sharp, function beautifully, and make your space feel complete.
When to Call in the Pros
So, you've learned to measure your windows like a pro, and you're feeling pretty confident. That's great! But sometimes, even with the best intentions and a trusty tape measure, it makes sense to bring in an expert. Think of it like this: you can certainly fix a leaky faucet yourself, but for a whole plumbing overhaul, you'd call a licensed plumber. When it comes to blinds, there are times when professional help isn't just convenient, it's truly beneficial.
Tricky Windows or Tricky Blinds
Some windows are simply not cut out for DIY measuring, or you might be considering a blind type that needs extra care.
For instance, consider windows that are:
Extra Large or Tall: Imagine trying to accurately measure a huge picture window or a two-story foyer window. It can be tricky, unsafe, and easy to make mistakes that cost you big bucks on custom blinds.
Unusual Shapes: Arched windows, trapezoids, or skylights aren't just rectangles. They need very specific measurements and a skilled hand to ensure the blinds fit perfectly and operate correctly. You can't just slap a standard blind on these.
Obstructed: Windows with deep sills, radiators, or built-in elements can make measuring a nightmare. Professionals know how to work around these challenges.
Then there are the blinds themselves. If you are thinking about something like a specialty blind, such as a large panel blind, these can be more complex to measure for and install. Or perhaps you're interested in motorized blinds. While they offer amazing convenience, getting the measurements just right for a seamless integration with your smart home system can be more involved. You can find out more about these convenient options in our smart window blinds guide. Sometimes, it's simply a matter of peace of mind. Calling in professionals can save you time and ensure proper functionality, especially for complex installations.
Time, Peace of Mind, and Avoiding Costly Mistakes
Let's be real, life is busy. Sometimes, your time is simply too valuable to spend hours meticulously measuring windows, especially if you have many of them. Calling in a pro ensures the job gets done quickly and correctly, freeing you up for other things.
More importantly, hiring a professional can save you money in the long run. An incorrect measurement or a DIY installation gone wrong can lead to blinds that don't fit, operate poorly, or even break. This means reordering, which costs more time and money. A professional installation often comes with a warranty, giving you extra peace of mind. Knowing that trained experts are handling your investment can be a huge relief.
Finding a Reliable Professional
So, you've decided to call in the cavalry. How do you find a reputable local service? If you’d rather leave the measuring to the experts, look for companies that specialize in window treatments—not just general contractors.
Check online reviews on platforms like Google or Yelp.
Ask friends and family for trusted recommendations.
Choose businesses with a strong local presence and reputation (e.g., in Spokane, Pro Shades & Blinds is a solid option).
When contacting them, ask about:Their experience with different blind types
Their measurement and installation process
Product and installation warranties
A reputable professional will gladly answer your questions and offer clear estimates. Whether you DIY or hire help, the goal is the same: blinds that fit beautifully and elevate your space.
Conclusion
Measuring your windows for blinds might seem daunting at first, but with the right approach and a little patience, it's a task you can definitely handle. Remember, accurate measurements are the foundation for blinds that look great, fit perfectly, and work without a hitch. Take your time, measure twice, and choose between an inside or outside mount based on your style and needs.
If you ever feel overwhelmed or have particularly complex windows, don't hesitate to reach out to the pros. Sometimes, a little expert help can save you a lot of time and potential headaches. Ready to find the perfect addition to your home? Check out our Projects & Gallery page and see how our designs come to life in real homes and discover inspiration for your own space or contact us for a free estimate. We are happy to help you with all your window treatment needs!
