Custom Shape Steel-Look Windows: Arches, Circles and Angles

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A custom shape steel-look window is a non-rectangular opening, such as an arch, circle or angled frame, built from Belgian steel-look profiles and made to measure. It gives the slim, industrial look of traditional steel windows while fitting the exact geometry your building or design needs.

What counts as a custom shape window

A custom shape window is any opening that departs from the standard rectangle. The most common requests we receive are round or half-round openings, arched tops, trapezoids, triangular gables, and windows that follow a sloped roof line or a curved wall.

Steel-look profiles suit these shapes well because the frame is slim and can be bent or assembled into angles without losing its clean appearance. The result looks deliberate rather than improvised, which is exactly what architects and owners tend to be looking for.

Design considerations before you draw

Non-rectangular openings change how the frame carries load and how sashes open, so the design should be settled early. Think about which parts of the window need to open, how the glazing will be divided, and where the frame meets the surrounding wall.

Decide whether the shape is fixed glass or includes operable sashes.
Check the wall structure and lintel above the opening.
Consider sightlines and how the mullions will divide the glass.

How we measure and draw a special opening

Accurate measurement matters more for curved and angled openings than for rectangles, because small errors compound along a curve. We visit the site, take measurements at several points, and check that the wall is plumb and square where the frame will sit.

After measuring, we prepare a drawing and a written specification showing the profile layout, glazing, and opening method. You review and approve it before anything goes into production, so there are no surprises on installation day.

Manufacturing curved and angled frames

Our factory on Rival Street in Tel Aviv cuts, bends and welds the profiles to the approved drawing. Curved sections are formed carefully and checked against a template so the arch or circle closes cleanly when assembled.

Each unit is tested for fit before leaving the workshop. Corners and joints are finished so the steel-look surface reads continuously across the whole shape.

Finishing and glazing for steel-look profiles

The finish protects the profile and sets its final look. Powder coating gives a durable colour and a matte or textured surface, while hot-dip galvanizing is used where the window faces harsh exposure and needs maximum corrosion protection.

Glazing options include clear, tinted and safety glass, chosen for privacy, light and the thermal demands of the room. Your choice of finish and glass should match the building's overall palette.

Installation and what to expect

Installation of a custom shape window needs care, because the frame must sit true and be fixed securely into the surrounding structure. Our team plans the fixing points during the measurement stage so the installation runs smoothly.

Once the window is in place, we check the operation of any sashes, the sealing against the wall, and the finish. Exact fixing details and structural requirements are confirmed with your engineer for each project.

Frequently asked questions

Can you make a round or half-round steel-look window?

Yes, circular and half-round openings are among our common custom requests. The shape is drawn and checked on site before production begins.

Are arched steel-look windows only for fixed glass?

No, arched frames can include operable sashes, but the opening method needs to be planned early. We will advise which parts can open based on the shape and the wall.

How do you make sure a curved frame fits the opening?

We measure at several points on site and use templates during bending and assembly. Each unit is test-fitted in the workshop before delivery.

Do I need an engineer to approve a custom shape window?

For most projects, the structural fixing and lintel support should be confirmed with your engineer. We can coordinate this as part of the approval step.

Common mistakes to avoid

The most frequent error is measuring an irregular opening only once or assuming the wall is square and plumb. Skipping the drawing approval step also leads to costly changes after production has started.

Our recommendation

Involve the fabricator during early design, not after the architectural drawings are final. Share the wall structure and sightline goals early so the frame, glazing divisions and opening method are resolved together.

Summary

Custom shape steel-look windows let arches, circles and angles follow your design, built to measure from approved drawings. Early measurement and drawing approval keep the result accurate and the process smooth.

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