Measuring Windows Yourself in New Palestine: What to Get Right and What to Skip

New Palestine Window Treatments · 2026-09-29

Every custom order starts with a number, and that number comes from somewhere. Sometimes it's a professional with a steel tape and a level, and sometimes it's a New Palestine homeowner standing on a step stool with a cloth tape from a sewing kit. Both can work. Only one of them has much room for error.

Deciding Inside or Outside Mount Before You Measure

Before deciding whether to measure it yourself, decide the mount, because that choice affects how much margin for error you actually have. Inside mount depends on exact frame depth and a clean, obstruction-free opening. Outside mount is more forgiving, since it's built around coverage rather than fitting precisely inside a fixed space.

If a window clearly has generous depth, no crank or lock in the way, and a level sill, inside mount is likely on the table and the measurement is fairly straightforward. If any of those things are questionable, outside mount is either the answer already or worth strongly considering, and it happens to be the easier of the two to measure accurately as a first-timer.

This is worth sorting out on a New Palestine home before deciding how much of the measuring to tackle solo, since a straightforward outside mount job is a very different undertaking than a tight inside mount fit with obstructions to navigate around.

The Tools That Actually Matter

A metal tape measure is the one non-negotiable tool here. Cloth tapes, the kind that come in a sewing kit, stretch slightly with age and use, and that stretch is enough to throw off a custom order. A basic steel tape from any hardware store solves this and costs almost nothing.

Beyond the tape, keep it simple. You want a pencil and paper, not your phone's notes app where a number can get mistyped, and ideally a helper for taller windows where holding the tape steady solo is nearly impossible. A small stepladder helps too, since guessing a number from an angle below the window introduces error you don't need.

• Steel tape measure, not cloth
• Pencil and paper for recording each number as you go
• A stepladder for anything above easy reach
• A second person to hold the tape on tall or wide windows

Skip the laser measure unless you've confirmed it reads out in exact fractions. Plenty of consumer models round to the nearest quarter or half inch, which sounds close enough until you realize that rounding is exactly the kind of error that causes a custom shade to bind against the frame.

Recording the Numbers Without Wrecking the Order

Accuracy on the tape means nothing if the number gets written down wrong afterward. Round to the nearest eighth of an inch, never the nearest inch. That level of rounding might feel like splitting hairs, but it's exactly the margin that decides whether a custom shade clears the frame cleanly or binds against it.

Write width before height, every time, and label each one clearly rather than trusting memory to sort it out later when you're filling out an order for eight windows in one sitting. Transposing the two numbers is a common mistake precisely because it's so easy to do when you're moving fast.

A simple system helps: note the room, the smallest of the three width readings, the smallest of the three height readings, and the mount decision, all together before moving to the next window. A quick phone photo of the window with a sticky note showing the numbers is a low effort way to keep a full house of measurements from blurring together.

The Three-Point Measure, and Why One Number Isn't Enough

On a big measuring day it's tempting to speed up as you go, and the three-point measure is usually the first thing to get cut when that happens. Resist it. Width at top, middle, and bottom. Height at left, middle, and right. Six numbers, every window, even the ones that look identical to the one you just finished.

That last part matters more than people expect. Two windows on the same wall that look like exact matches can measure differently once you actually check all three points, especially in an older New Palestine house where the frames were built or have settled slightly differently over time, even a few feet apart.

Use the smallest width and smallest height of the three readings for each window. It's the only way to guarantee the finished product clears the tightest point of that specific opening rather than the one you happened to check first.

What Happens When the Measurement Is Wrong

This part deserves a straight answer instead of a soft one. Custom window coverings are built exactly to the number given, and once they're cut, they generally aren't returnable the way a shelf product is. Get the number wrong and the usual outcome is paying again for a remake, not a refund, because nothing about the product itself was defective.

That's not a reason to avoid measuring your own New Palestine windows. It's a reason to take the process seriously if you do. Straightforward rectangular windows with good access and no obstructions are genuinely low risk. Anything with a visible slope, an uncertain depth, or a long list of windows to get through in one session carries more room for a mistake to slip through unnoticed.

Be honest with yourself at the end of the process. If every number came out clean and consistent across all three measuring points, that's a good sign. If one window left you second-guessing, don't talk yourself out of that feeling. A second check before ordering costs nothing. A remake after a bad order costs real money.

Good measuring is a skill anyone can pick up, but a professional measure still catches things a first attempt usually misses, like an out-of-square frame or a mounting depth issue. It's worth having that second check before a custom order goes in.

Frequently Asked Questions

Should I measure to the nearest inch or the nearest fraction?

Nearest eighth of an inch, every time. Rounding to the nearest inch feels close enough but it isn't, since a quarter inch of slop is often the difference between a shade that fits and one that doesn't clear the frame or leaves a visible gap.

What kind of tape measure should I use?

A steel tape, not a cloth one. Cloth tapes stretch slightly with use and age, which throws off a measurement just enough to matter on a custom order. A basic steel tape from any hardware store is accurate and cheap.

Do I measure the glass or the whole frame?

Neither, exactly. For inside mount you measure the inside of the frame opening itself, not the glass and not the outer trim. For outside mount you're measuring how far past the frame you want the covering to extend, which is a different number entirely.