Juliet Balcony Railing Size for French Door Openings

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A juliet balcony railing is a shallow guard fixed across the opening of a full-height door, so its size is set by the door's width and height rather than by a standard balcony depth. Measure the clear opening carefully, confirm the fixing surface and the safety height required, then agree on the exact dimensions with the engineer before production.

What a Juliet Balcony Railing Is

A juliet balcony is a small, decorative railing set across the face of a full-height door, such as a French door or a sliding glass door. It does not create a walkable terrace. Its job is to give a safe barrier in front of the opening while letting light and air in and keeping the view unobstructed.

Because the railing sits directly against the door, its width follows the opening and its height follows the threshold-to-head measurement, not a standard balcony module. That is why every juliet railing is best made to measure.

Measuring the Door Opening Correctly

Start with the clear width of the opening, measured at the top, middle and bottom, since frames are not always perfectly square. Then measure the height from the finished floor or threshold to the underside of the head frame. Record both measurements and note any difference between the sides.

Measure the clear opening, not the outer frame.
Note whether the door swings in or out, as this affects the fixing points.
Photograph the surroundings and the fixing surface.

Checking the Fixing Surface

The railing must be anchored into a solid part of the wall or frame. Check whether the fixing points are concrete, brick, or a thermal insulation layer that needs reinforcement. Mark the planned positions of the brackets, and make sure they do not clash with shutters, lighting, or door hardware.

In older buildings the surface may be uneven. Note this during the site visit so the bracket design can compensate for it.

Height, Spacing and Safety Requirements

Safety is the main design check. The Israeli railing standard SI 1142 governs guard heights and the spacing of infill elements so that a person or a child cannot pass through. We do not quote exact values here, because they depend on the specific installation and the local conditions.

Your engineer or architect will confirm the required height and the maximum gap between bars. We design the infill to match that confirmed specification, so the finished railing meets the approved drawing.

Materials and Finishes Suited to the Opening

Steel is the most common choice for a juliet railing because it is strong for its thin profile. Stainless steel suits areas near the sea or high humidity, while aluminum is lighter for larger openings. Each option can be finished with hot-dip galvanizing or powder coating, depending on the exposure and the colour you want.

Choose a finish that matches your window frames and facade, and ask us which option will weather best at your address.

Our Process from Enquiry to Installation

We begin with your photos and rough measurements. Then one of our team visits the site to take exact dimensions and check the fixing surface. We send a drawing and a written specification for your approval before anything is produced.

Once you approve, the railing is made at our workshop on Rival Street 37 in Tel Aviv, finished, and then installed on site. Every stage is confirmed with you, so the result matches what you agreed.

Frequently asked questions

Is a juliet balcony railing the same size as a standard balcony railing?

No. A juliet railing is sized to the door opening it protects, so its width and height follow that opening. Standard balcony railings are designed for a walkable terrace and do not fit a French door.

Do I need an engineer to approve the railing?

In most cases yes, because the guard height and infill spacing must meet the required safety standard. We will confirm the exact specification with your engineer before production.

Can a juliet railing be fitted to an existing door?

Usually yes, provided the frame or wall is solid enough to take the brackets. A site visit lets us check the fixing surface and recommend any reinforcement needed.

How do I start the process?

Send us photos of the door and your rough measurements. We will reply with the next steps, including a site visit for exact measurements.

Common mistakes to avoid

The most common mistake is measuring the outer frame instead of the clear opening, which leads to a railing that does not fit. Another is ignoring the fixing surface, so the brackets end up in a weak or insulated area.

Our recommendation

Measure the opening at three points for width and height, and photograph the fixing area before you contact a supplier. Confirm the required guard height and infill spacing with your engineer early, so the drawing is approved before production starts.

Summary

A juliet balcony railing is sized to the full-height door it protects, so accurate measurement of the clear opening and the fixing surface is essential. Confirm the safety specification with your engineer, then have the railing made to measure.

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