Getting the measurements right for roller shades is essential to ensure they fit properly, look great, and function as intended. Incorrect measurements can lead to issues like light gaps, shades that don’t fit, or uneven coverage. Whether you’re installing inside or outside mount shades, precision is key. Here’s a quick breakdown:
- Tools Needed: Steel tape measure, notepad, pencil, and a level.
- Inside Mount: Measure the width (top, middle, bottom) and height (left, center, right). Use the smallest width and largest height, rounding to the nearest 1/8 inch. Check window depth to ensure it meets the minimum requirement (typically 1-1/2 inches).
- Outside Mount: Measure the width of the window plus additional overlap for full coverage. Measure the height from the top mounting point to the bottom, using the largest measurement.
- Common Mistakes to Avoid: Don’t reverse width and height, account for obstructions like handles, and measure each window individually.
Inside vs Outside Mount Roller Shades Measurement Guide
How to Measure your Window for Roller Shades
Before you begin, ensure you have the essential measuring tools ready for an accurate fit.
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Tools You Need for Measuring Roller Shades
Measuring your windows for roller shades doesn’t require a lot of gear. All you need are a steel tape measure, a notepad and pencil, and a level. These essentials ensure precise measurements and help you avoid costly mistakes.
Why Choose a Steel Tape Measure?
A steel tape measure is your best bet for window measurements. Unlike cloth or plastic alternatives, steel won’t stretch or sag, which is crucial for getting accurate dimensions. This precision is key to ensuring your roller shades fit perfectly when you install them yourself.
Additional Handy Tools
Having a notepad and pencil nearby is a smart move. You can jot down the width, height, and mount type of each window right away, keeping your measurements organized and avoiding any confusion when placing your order through AAA Blind & Shutter Factory.
A level is another must-have tool. Use it to check if your window frame or mounting surface is straight. If the frame isn’t level, your shade might roll up unevenly or hang crooked. For outside mounts, make sure there’s at least 2 inches of flat surface to secure the brackets [1].
With these simple tools, you’ll be all set to take accurate measurements for both inside and outside mounts.
How to Measure for Inside Mount Roller Shades
Inside mount roller shades offer a sleek and tidy appearance, but accurate measurements are essential for a proper fit. Since window frames can be slightly uneven, it’s important to measure at multiple points to account for any variations.
Measuring Width and Height
Start by measuring the width of the window frame at three points: the top, middle, and bottom. Write down the smallest measurement and round it down to the nearest 1/8 inch. This ensures the shade won’t rub against the frame. For the height, measure the left, center, and right sides of the window. Record the largest measurement and round it up to the nearest 1/8 inch to ensure full coverage.
| Measurement Type | Points to Measure | Use This Measurement | Rounding Rule |
|---|---|---|---|
| Width | Top, Middle, Bottom | Smallest | Round down to nearest 1/8" |
| Height | Left, Center, Right | Largest | Round up to nearest 1/8" |
| Depth | Opening to Glass (L, C, R) | Smallest | No rounding |
After measuring width and height, check the depth of the window frame to confirm it can accommodate the mounting brackets.
Checking Window Depth
Depth is a crucial factor for inside mounts. Measure from the window glass to the edge of the frame at three points: left, center, and right. Record the smallest depth. Most roller shades need a minimum depth of 1-1/2 inches to fit the brackets and operate smoothly. If the depth is less than 1-1/2 inches, consider using an outside mount instead. This precision is one of the main benefits of choosing custom vs. ready-made window treatments.
Recording Measurements Correctly
Write down your measurements in the format Width × Height (e.g., 35-3/8" × 48-1/2"). If you’re measuring multiple windows, label each one clearly, such as "Living Room Left" or "Office Window 2." When ordering from AAA Blind & Shutter Factory, provide these exact measurements. The manufacturer will adjust them (usually subtracting about 1/2 inch) to ensure the shade fits and operates perfectly [2].
How to Measure for Outside Mount Roller Shades
Outside mount roller shades are installed on the wall or molding, extending beyond the window frame to block out light completely. Accurate measurements are crucial to avoid light gaps around the edges.
Determining Width and Height
For the width, measure the distance from one edge of the window frame to the other. Then, add extra overlap on each side to ensure full coverage. Keep in mind that the shade’s fabric is typically 1‑1/8 to 1‑1/4 inches narrower than the total width you order[3]. Be sure to factor this into your measurements for optimal light control.
For the height, measure from the top mounting point down to the bottom of the window frame. Take measurements at three points – left, center, and right – and use the largest number to guarantee complete coverage. Once you’ve finalized these measurements, double-check your mounting area.
Checking for a Flat Mounting Surface
Before installation, make sure the mounting surface (whether wall or molding) is smooth, sturdy, and free of obstructions. Look for any bumps, uneven spots, or protruding trim that might interfere with proper bracket placement. Also, ensure there’s enough clearance for the shade to roll up without being obstructed by nearby fixtures or decorative elements.
Submit these exact measurements when ordering from AAA Blind & Shutter Factory to achieve a perfect fit compared to off-the-shelf options for your outside mount roller shades.
Measurement Rules and Common Mistakes to Avoid
Basic Measurement Rules
When measuring for window treatments – whether for an inside or outside mount – there are a few essential rules to keep in mind to ensure accuracy. Even if windows look identical, measure each one separately. Slight variations can make a big difference. Always record your measurements in the Width x Height (W x H) format to avoid mix-ups when placing an order with AAA Blind & Shutter Factory.
Measurements should be rounded to the nearest 1/8 inch: round down for width and up for height. To check if your window is square, measure diagonally from one corner to the opposite corner. If the two diagonal measurements differ by more than 1/2 inch, you may want to go with an outside mount instead.
For inside mounts, provide the exact dimensions of the window opening – don’t make any adjustments yourself. The factory will handle deductions to ensure proper hardware clearance. On the other hand, for outside mounts, the measurements you provide will be used as-is, so consider how much overlap you want for better light control.
Common Mistakes and How to Prevent Them
Now that you’ve got the rules down, it’s equally important to avoid common pitfalls that can throw off your measurements.
One of the most frequent mistakes is reversing the width and height. Double-check that you’ve listed the dimensions in the correct order. Using a steel tape measure, as mentioned in the Tools section, can also help ensure precision.
Another common oversight is failing to account for obstructions like window cranks, latches, or handles, which can interfere with how the shades operate. Be sure to measure from the windowpane to the outermost edge of the casing, keeping an eye out for any hardware that sticks out[1]. Finally, don’t assume all windows are the same size – take the time to measure each one individually. Even slight differences can affect the fit.
Conclusion
Getting accurate measurements for roller shades is straightforward. All you need is a steel tape measure and a bit of attention to detail. Record your dimensions as Width × Height (for example, 35‑3/8" × 48‑1/2") and measure each window separately. Don’t forget to note any obstructions like cranks or handles to ensure your shades work perfectly.
Whether you opt for an inside mount for a streamlined look or an outside mount to block more light, double-checking your measurements is key to achieving a flawless fit. Precise width, height, and depth measurements are the foundation of a smooth installation.
Feeling unsure about measuring? You’re not alone, but help is available. While 99% of customers successfully measure and install their own window treatments[1], AAA Blind & Shutter Factory provides free in-home consultations and professional installation services and costs.
Their team can tackle tricky windows, confirm your measurements, and handle the installation process. This ensures your custom roller shades fit like a glove and work seamlessly from day one – taking the stress out of DIY.
FAQs
What’s the difference between inside and outside mount roller shades, and how do I choose?
Choosing between inside mount and outside mount roller shades comes down to your window’s size, your design preferences, and how you plan to use the space.
Inside mount shades fit snugly within the window frame, offering a sleek and tidy appearance that emphasizes the window’s natural shape. They’re ideal for saving space and minimizing light gaps. The catch? You’ll need enough frame depth to accommodate the shade mechanism, so they may not work well for shallow windows or frames with obstructions like handles.
Outside mount shades, on the other hand, are installed above or around the window frame. This makes them a great choice for shallow windows or when you’re aiming to block out more light. They can also make a window appear larger and add a bold, decorative element to your room.
Ultimately, your decision should reflect both the structure of your windows and the aesthetic you want to achieve.
What can I do if my window depth is less than 1-1/2 inches for an inside mount roller shade?
If your window depth is less than the recommended 1-1/2 inches for an inside mount, don’t worry – you’ve still got options to make your roller shades work beautifully. One solution is a partial inside mount, where the shade fits inside the frame but extends slightly beyond it. Another option is an outside mount, which completely avoids depth concerns by attaching the shade to the wall or window trim instead.
Both approaches allow you to enjoy functional and attractive roller shades, even with limited window depth. Just take accurate measurements and choose the option that best suits your space!
Why should I measure each window separately for roller shades, even if they look the same?
When measuring for roller shades, take the time to measure each window individually. Even windows that seem identical can have slight differences in frame size, molding, or warping. These small variations can lead to gaps, misalignment, or trouble operating the shades if not accounted for.
Accurate measurements for every window ensure a perfect fit, improving both the appearance and functionality of your roller shades. This attention to detail helps avoid common installation problems and delivers a clean, professional finish.
