Tempered vs Laminated Glass for Balcony Railings Explained

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Tempered glass is heat-treated to be several times stronger than regular glass and breaks into small blunt pieces when it fails. Laminated glass bonds two or more layers with a plastic interlayer, so if it cracks the pieces stay held in place, which is why it is often preferred for balcony railings where falling is a concern.

What tempered glass is and how it behaves

Tempered glass is ordinary float glass that has been heated and then rapidly cooled. This process builds internal stress that makes the pane much stronger than standard glass of the same thickness. Its main safety feature is how it fails: when it breaks, it shatters into many small, relatively blunt pieces rather than long sharp shards.

Strong for its thickness and resistant to impact
Cannot be cut or drilled after tempering, so all sizing is done beforehand
Breaks completely when damaged, so the opening is left clear

What laminated glass is and how it behaves

Laminated glass is made by bonding two or more glass layers together with a tough plastic interlayer under heat and pressure. When the glass is struck hard enough to crack, the fragments tend to stick to the interlayer instead of falling away. The panel stays in its frame and keeps acting as a barrier, which many homeowners value on a balcony or stairway.

Pieces remain bonded to the interlayer after breakage
Can be combined with tempered layers for extra strength
Usually heavier and a little more costly than a single tempered pane

Choosing the right glass for your railing

The right choice depends on where the railing is, how high it sits above the ground, and how often people lean on it or stand near it. Balconies on upper floors and stairway railings often benefit from laminated glass, while tempered glass can be a good fit for lower or more sheltered positions. Ask yourself who uses the space, including children and pets, and whether you want the glass to stay in place even if it is damaged.

Glass choice should also take into account the railing system, the fixings and the expected wind load. The final decision is best made together with a qualified engineer who checks the design against the requirements of the Israeli railing standard SI 1142.

Measuring the railing on site

Accurate measurement is the foundation of a good glass railing, since tempered glass cannot be trimmed after it is made. We visit the site, measure the length and height of each section, check the floor or slab edge, and note any corners, level changes or obstacles. We also record how the glass will be fixed, whether to a steel post, a floor channel or a side profile, because this affects the final dimensions.

Length and height of each panel, measured at several points
Floor, slab or stair edge levels and any slope
Fixing method and access for installation

Drawing, approval and factory production

After measuring, we prepare a drawing and a written specification that show the glass type and thickness, the frame or fixing details, and the finishes. You review and approve the drawing before anything is cut. In our factory on Rival Street in Tel Aviv, we work on iron, aluminum and stainless steel supports, and glass is ordered and prepared to the approved sizes. Tempered glass is produced to exact dimensions, so any change after approval must be discussed before production starts.

Finishing and installation

Metal parts of the railing are finished, typically by hot-dip galvanizing and powder coating, to protect them from weather and salt air. On installation day, the posts or channels are fixed first, then the glass panels are set in place, checked for level and alignment, and secured with the chosen fixings. Gaps, sealing and edge protection are checked before the railing is handed over, and we walk through its use and care with you.

Frequently asked questions

Is laminated glass always safer than tempered glass for a balcony?

Laminated glass is generally preferred where falling is a concern because its fragments stay bonded, so the barrier remains in place. Tempered glass is also a safe choice when correctly specified, and the right answer depends on the location and the design.

Can I combine tempered and laminated glass in one railing?

Yes, a laminated panel can be made using tempered layers, which combines high strength with a retained-fragment interlayer. Your engineer can advise on the best build-up for your specific railing.

Can the glass be cut to size after it is installed?

No, tempered glass cannot be cut or drilled after tempering, so all dimensions must be measured accurately before production. This is why on-site measurement and approval of the drawing come before anything is ordered.

Do I need to check the railing against a standard?

Yes, glass railings should be checked against the Israeli railing standard SI 1142, and exact values such as thickness and load requirements are confirmed with the engineer for your project.

Common mistakes to avoid

Ordering glass from measurements taken without visiting the site, and choosing the glass type only by appearance without considering height and use. Both can lead to panels that do not fit or do not suit the location.

Our recommendation

Decide on the glass type after you know the height, the fixing method and who will use the balcony, and have the design checked before production. A short site visit and an approved drawing prevent most problems.

Summary

Tempered glass is strong and breaks into small pieces, while laminated glass keeps its fragments bonded, which often makes it the better choice for balcony safety. Accurate measurement and an approved drawing are essential before production.

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