Measuring wrong once means wasting material, missing the installation deadline, and starting over. It's the one step that makes or breaks a project before anything is hung on the wall. The good news: measuring for wallpaper, blinds, and glass film is simple — they just follow different rules. Here's how to get each one right.

Measuring for Wallpaper

Wallpaper measurement is straightforward because you're covering a flat surface. What matters is the wall's true dimensions, not the obstacles on it.

What you need: A metal tape measure (not cloth — cloth stretches and lies). A notebook to write measurements down as you go.

The steps:

1. Measure the height from floor to ceiling (or to wherever you want the wallpaper to end). Use the tallest point on that wall. Measure in at least two places (left and right side) and take the larger number.
2. Measure the width from one end of the wall to the other. Again, measure in at least two places (top and bottom) and take the larger number.
3. Write down both: Width × Height (e.g., 12 ft × 9 ft).
4. If you're papering multiple walls, repeat for each, or combine the total widths if the room flows as one space.
5. Add 10% for waste. This covers pattern matching, trimming errors, and accidents. It's cheap insurance.

If the wall has a window or door: Don't subtract them from your measurements. Just give us the full wall width and height — the installer will cut around the window or door as part of the installation. Wallpaper waste is cheap; getting measurements wrong is expensive.

For custom murals (printed to exact size): Measure width and height at their widest and tallest points, then add 4 inches (10 cm) to both. The extra gives installers breathing room during application. If there's a window or door on the wall, note it — we can adjust the design so the pattern doesn't get cut off awkwardly.

Measure twice. Always. Measure the same wall two days later if you're not confident. A mistake here costs the most.

Measuring for Blinds

Blind measurement has two paths depending on whether you want the blind inside the window frame (clean, flush look) or on the wall outside the frame (blocks more light).

What you need: A metal tape measure. That's it.

For inside mount (blind sits flush inside the window frame):

1. Measure the width at the top, middle, and bottom of the window opening. You'll get three numbers. Use the smallest one.
2. Measure the height at the left, center, and right of the window opening. You'll get three numbers. Use the largest one.
3. Round both to the nearest 1/8 inch. Done.
4. Check one thing: is there at least 1.5 inches of depth inside the frame (from the glass to the inner edge)? If not, inside mount won't fit — go outside mount instead.

Why smallest width, largest height? Windows aren't perfect squares. The smallest width ensures the blind doesn't get stuck on the sides. The largest height ensures it covers the whole opening from top to bottom.

For outside mount (blind sits on the wall, covering the frame):

1. Decide how much you want covered. Usually, this is the window frame width plus 1.5 to 3 inches on each side.
2. Measure that width and height on your wall.
3. Round to the nearest 1/8 inch.
4. That's your measurement. Send it to us.

Why add extra on the sides? It blocks light from leaking in around the edges and looks more finished. The more you add, the more light you block.

One more thing: The factory automatically deducts about 30–35 mm from your measurement for brackets and controls. Don't deduct it yourself — just send us the space measurement and we'll handle the rest.

Measuring for Glass Film

Glass film is the simplest because you're measuring the glass pane itself, not the window frame or the wall. But there's a trick: measure glass only, add a small buffer, and account for imperfect panes.

What you need: A metal tape measure. A glass pane to cover. That's it.

The steps:

1. Identify the glass pane you're covering. Measure only the visible glass — ignore the frame, gaskets, and handles.
2. Measure the width at three points: top, middle, and bottom. Take the largest measurement. This accounts for panes that bow or aren't perfectly square.
3. Measure the height at three points: left, center, and right. Again, take the largest measurement.
4. Add 1 inch (25 mm) to both width and height. This buffer is crucial — it gives you room to trim the film against the frame after it's on the glass. Film that's too short leaves a visible gap. Film that's too long trims easily.
5. Round to the nearest 1/16 inch for precision.
6. Record as W × H.

For odd-shaped panes (arched, triangular, etc.): Measure the widest point and the tallest point, not the overall window. The film is cut to fit just the glass, so the design can work around the shape.

For multiple panes: Measure each pane separately. Even if they look identical, they often aren't. Don't assume — verify each one.

For clear borders or gaps: If you want a clear frame around patterned film (common for frosted or decorative designs), subtract twice the gap width from both dimensions. For example, a 1 cm clear border all around means subtracting 2 cm from width and 2 cm from height.

Common Mistakes (and How to Avoid Them)

• Measuring the frame instead of the space. Wallpaper measures the full wall. Blinds measure the opening (inside) or desired coverage (outside). Glass film measures the glass only.
• Forgetting to add buffer for wallpaper waste or glass film. Wallpaper needs 10% extra. Glass film needs 1 inch extra. They trim in installation, not before.
• Measuring only once. Windows and walls aren't perfect. Measure twice, three times if you're not confident. It takes five minutes and saves hours of frustration.
• Writing measurements down wrong. Label everything clearly — "Living room east wall," "Front bedroom window," not just a random list of numbers you can't match to rooms later.
• For blinds: confusing inside and outside mount rules. Inside: smallest width (so it fits), largest height (so it covers). Outside: measure what you want covered, add overlap on sides.

The Quick Checklist

When to Send Measurements and How

Once you've measured, send us the dimensions with a photo of the wall or window if you can. Label everything clearly — room name, which wall or window, the exact measurements. Include a photo of any obstacles (shelves, radiators, fixtures) so we know what we're working with. If you're unsure about anything, get in touch — we'll review before anything goes into production, and it only takes a minute.

One last thing: if you're ordering custom, we confirm measurements with you before printing. If you're ordering rolls or standard film sizes, double-check the product page calculator — it'll tell you exactly how many rolls or what size to order based on your wall dimensions.

Measure twice. Order once. No surprises.