Custom Size Window Production for Unusual Openings

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Custom size window production starts with an exact on-site measurement of the opening, followed by a written drawing that the client approves before anything is cut. The frame and sash are then built to that drawing in our Tel Aviv factory and finished before installation. This process suits irregular, arched, sloped or oversized openings where standard sizes do not fit.

Why Unusual Openings Need Custom Work

Many older buildings and renovated apartments have openings that do not match standard window sizes. Walls may not be perfectly square, lintels may sit at different heights, and some openings are narrower or taller than anything sold off the shelf.

Forcing a standard unit into such an opening usually leads to gaps, uneven sealing and a poor look. Building the window to the actual opening solves these problems from the start.

Irregular or out-of-square walls
Non-standard heights or widths
Arched, sloped or angled openings

On-Site Measurement Step by Step

Measurement is the most important stage. We measure width and height at several points, check diagonals, and note the wall thickness, the floor level and any obstacles such as shutter boxes or railings.

Photos taken during the inquiry help us prepare, but they never replace a physical measurement. Working from the real opening keeps errors out of the production stage.

Drawing and Specification Approval

After measurement we prepare a drawing with the frame profile, opening direction, glazing and fittings, along with a written specification. The client reviews it and confirms every detail before production begins.

Approval matters because changes after cutting are costly and slow. Take time to check sizes, handle positions and the side the window opens toward.

Factory Production of Belgian Steel-Look Profiles

Once approved, the frame and sash are cut and assembled in our factory at Rival Street 37 in Tel Aviv. The Belgian steel-look profiles give the slim sightlines of steel windows with the practical properties needed for everyday use.

Each unit is built to its own drawing, so a non-standard size is made with the same care as a common one. Components are checked against the specification before they leave the workshop.

Finishing and Protection

Finishing protects the metal and sets the final look. Depending on the product and design, parts may receive hot-dip galvanizing or powder coating, which improve durability against weather and wear.

We confirm the finish colour with the client before production so the result matches the rest of the building or the interior.

Installation and Final Fit

Installation is planned around the opening measured earlier. The unit is fixed level and plumb, sealed to the surrounding structure and checked for smooth operation of the sash and hardware.

Because the window was built for that exact opening, the fit is tight and the finishing work around it stays clean.

Frequently asked questions

Do I need to be present for the measurement?

It is helpful but not always required. Having someone who knows the opening and any obstacles available makes the visit faster and more accurate.

Can custom windows be made for any opening shape?

Many shapes can be built, including irregular and non-rectangular openings. Whether a specific design is practical is confirmed during the drawing stage.

Will I see a drawing before production starts?

Yes. You receive a drawing and written specification and approve them before any material is cut.

Is custom work only for new buildings?

No. Custom windows are often chosen for renovations and older buildings, where the openings rarely match standard sizes.

Common mistakes to avoid

A common mistake is ordering from a rough estimate instead of an exact measurement, which causes fit problems later. Another is approving a drawing without checking handle positions and the opening direction.

Our recommendation

Measure the opening yourself at three points for width and height before you call, and note any obstacles. Then review the drawing carefully before approving it, since corrections are far easier before production than after installation.

Summary

Custom size window production follows a clear path: exact measurement, approved drawing, factory build, finishing and installation. This process gives unusual openings a window that fits properly and looks right.

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