Window Measuring Mistakes That Delay Steel-Look Orders

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Most delays in steel-look window orders come from inaccurate or incomplete measurements taken before the order is placed. Measuring the actual opening on site, checking it against the drawing, and confirming frame and finish details early keeps production and installation on schedule.

Why measurement accuracy matters for steel-look windows

Belgian steel-look profile windows and doors are made to measure, so every frame is cut and assembled for one specific opening. Unlike standard off-the-shelf units, there is no room to adjust in the factory once production has started. A small error in the opening can mean a frame that does not fit, a return visit to the site, and a delay for the whole project.

Treat the measurement as the foundation of the order. Good measurements save time at every later stage, from drawing approval to final installation.

The most common measuring mistakes

Several errors come up again and again on site:

Measuring only the visible wall opening instead of the rough opening where the frame will sit.
Taking one measurement and assuming the opening is square, when walls are often out of plumb.
Recording width and height without noting the reference point, such as which side is measured from.
Ignoring wall finishes like plaster, tile or cladding that change the final opening size.
Forgetting to note the swing direction and handle side for doors.

How to measure correctly on site

Measure at three points for width and three for height, top, middle and bottom, and the same at the sill. Use the smallest figure for the width and height you give us, and note any difference you find. Measure after the wall finishes are completed or record the thickness of the finish you will apply.

Photograph each opening with a tape measure in view. Photos help our team confirm details before we start drawing and prevent misunderstandings later.

Planning and approval: confirm before production

Once measurements are taken, we prepare a drawing and a written specification. Check every detail: dimensions, opening direction, glazing, profile colour and the finish you have chosen. Errors caught at this stage cost nothing; errors caught after production can mean remaking parts.

Approve the drawing in writing before we begin. A clear sign-off protects both the contractor and the factory and keeps the schedule predictable.

Production and finishing considerations

Our factory produces the frames to the approved drawing and then applies the finish, such as hot-dip galvanizing or powder coating, where the project requires it. Finishing adds a process step, so the order should be confirmed with enough time before the installation date. Share your project timeline early so we can plan the production slot around your site schedule.

If site conditions change after approval, let us know as soon as possible so the drawing can be revised before cutting begins.

Installation: the final checkpoint

On installation day, check that the opening matches the approved drawing before the frame is set. Confirm that the sill, reveals and wall finishes are where they were when measured. If something differs, stop and contact us before forcing the frame into place, because forcing a frame can damage the profile and the surrounding wall.

Plan the installation with the rest of the trades so the opening is ready and protected when the window arrives.

Frequently asked questions

Should I measure before or after the plaster is finished?

Measure after the wall finish is in place, or record the thickness of the finish you will apply. The frame must fit the finished opening, not the raw block.

What if the opening is not square?

Measure the diagonals and record any difference between the top and bottom or the two sides. Share these figures with us so the drawing can account for the variation.

Can I change the dimensions after the order is approved?

Changes are possible if they are reported before production begins. Once cutting has started, revisions can cause delays, so confirm all dimensions carefully at the approval stage.

Do I need to send photos with my inquiry?

Yes, photos of each opening with a tape measure visible help our team understand the site and reduce questions. They make the planning stage faster.

Common mistakes to avoid

The most costly error is measuring the visible opening once and assuming it is square and finished. Skipping the drawing approval step adds delays that could have been avoided.

Our recommendation

Measure every opening at three points, record the finish thickness, take photos, and approve the drawing in writing before production starts. This simple routine prevents most of the delays seen on steel-look window projects.

Summary

Accurate on-site measurement, a clear drawing, and written approval before production are the keys to on-time steel-look window installation.

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