Can Security Bars Be Custom-Designed for Unusual Window Shapes?

Why standard bars often do not fit unusual windows

Most ready-made security bars are built for rectangular openings. When a window is arched, rounded or cut at an angle, off-the-shelf panels leave gaps, look unbalanced, or require awkward modifications that weaken the frame.

Irregular openings also hide problems that only show up on site: out-of-square walls, sloping sills and uneven reveals. A custom approach accounts for these conditions from the start, so the bars sit neatly and stay secure.

How custom design works for non-standard shapes

The process usually starts with photos of the opening, followed by an on-site measurement at the factory team's visit. The measurements capture the curve, the angles and the depth of the wall, not just the width and height.

From these measurements a drawing and written specification are prepared. You review and approve the design before anything is produced, so you know exactly how the bars will look.

Design options for arched and curved windows

Arched windows suit bars that follow the curve, with vertical members meeting a fan or radial pattern at the top. Circular windows can use a spoke or ring layout that keeps the view clear while maintaining strength.

• Curved top rails that match the arch
• Fan or radial infill for round openings
• Decorative scrolls or simple geometric patterns

Materials and finishing for custom bars

Custom security bars are typically made from iron or aluminum. Iron offers a traditional look and substantial strength, while aluminum is lighter and well suited to modern designs and easier handling on upper floors.

Finishing options include hot-dip galvanizing for corrosion protection and powder coating in a colour that matches your frames. The right finish depends on your exposure to weather and the style of your building.

Safety and fire egress considerations

Security bars must still allow safe escape in an emergency. For windows that serve as escape routes, the design should include a release or opening mechanism that the household can use without tools.

Bar spacing and load requirements should be checked against the applicable Israeli standards. Exact values are confirmed with the engineer during the design stage, so the final specification is correct for your location and use.

Installation and what to expect

Installation begins once the approved design is produced in the factory. Because each piece is made to measure, the fit is checked on arrival and adjustments are made before fixing into the wall.

Plan for the bars to be fixed to a solid structure, and ensure the frame and surrounding wall are sound. Ask your installer to confirm fixings suit your wall type, whether it is masonry, concrete or a frame.

Frequently asked questions

Can you make bars for a triangular or trapezoid window?

Yes. The bars are drawn to the exact angles and dimensions of the opening, so triangular and trapezoid shapes are handled the same way as arches.

Do I need to send exact measurements before a visit?

Photos and approximate sizes are a helpful start, but the final measurements are taken on site to capture the true shape and wall depth.

Will custom bars look different from standard ones?

They are designed to follow your window, so the result looks integrated rather than added on. Pattern, material and finish can all be chosen to match your building.

Are custom bars suitable for balconies as well?

Yes, the same approach applies to balcony bars and railings, with the design adapted to the opening and the protection needed.

Common mistakes to avoid

A common mistake is ordering from a rough sketch or width-only measurements, which leads to bars that do not sit correctly. Skipping the approval of the written drawing can also result in a design that differs from what you expected.

Our recommendation

Choose a design that follows the curve of the opening and confirm the drawing before production. Ask for a written specification that lists material, finish and fixing method so you know exactly what you are getting.

Summary

Security bars can be custom-designed for arched, round and irregular windows through on-site measurement and an approved drawing. This gives a secure fit and a look that suits your building.

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• What Should I Prepare Before a Security Bar Installer Visits?
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