Where Is Safety Glass Required at Home? Doors, Low Panes and More

In a home, the glass most likely to be walked into or fallen against should be safety glass: glass in doors, glass beside doors, and glass low down near the floor. Building regulations call these critical locations. When a pane in one of those spots is replaced, the new glass should be toughened or laminated even if the old one was not.

What counts as a critical location

The idea behind the rules is simple: people collide with glass at door height and at low level, so those zones need glass that breaks safely or not at all. In practice that covers glazing within doors, glazing in the side panels next to doors, and glazing in walls and windows where the bottom of the glass sits close to the floor.

The precise heights and widths are set out in the regulations, and a glazier will measure against them when quoting. As a homeowner, the useful habit is to think of any glass you could walk into or brush against with your body as a likely safety glass position.

• Glass in front doors, back doors, French doors and internal doors
• Side panels immediately beside a door
• Low level panes, such as floor to ceiling windows and bay window bottoms
• Patio doors, sliding doors and bifolds
• Shower screens and bath screens

Why older homes often do not comply

Many London houses were glazed long before these rules existed. Victorian front doors with plain glass panels, 1930s internal doors with small plain panes and low sash windows are all common. That glass is not automatically illegal to keep, but when it breaks and is replaced, the replacement should meet today's standard.

This is one of the most common surprises when people ask for a like-for-like pane. The old glass might be 4mm plain float; the right replacement could be toughened, or laminated, which may change the look slightly and the lead time for ordering.

Toughened or laminated: which goes where

Either type can satisfy the safety requirement in most domestic positions. Toughened glass is strong and breaks into small pieces. Laminated glass cracks but stays held together by its interlayer, which also helps with security and noise. Choosing between them is covered in our toughened vs laminated glass guide, and our what is toughened glass guide explains how toughened panes are made and marked.

Bathrooms, stairs and other places to think about

Beyond the formal critical locations, it makes sense to think about where a slip or fall is likely. A window beside a bath, a pane at the turn of a staircase or a glazed panel in a child's bedroom are all places where people often choose safety glass anyway. We can advise on these when we are quoting for other work nearby.

Obscure glass for bathrooms is available in toughened and laminated versions too, so privacy does not have to mean losing safety. Our obscure and privacy glass guide covers the pattern choices.

Double glazing and safety glass

In a double glazed unit, each pane is chosen separately. A unit in a door or low position will normally have safety glass on both panes. When a misted or cracked unit in a critical location is replaced, the new unit is ordered with the correct glass, not simply copied from whatever was there before.

Landlords and rented homes

If you let property, getting glass right in doors and low panes is part of keeping a home safe for tenants. Our landlord window repair responsibilities guide sets out the wider picture, and we work with landlords and letting agents on replacement glass across London.

Getting a pane replaced correctly

When you ask for a quote, tell us where the pane sits and send a photo of the whole door or window, not just the break. That is enough for Mark to work out whether the opening is a critical location and which glass to order. Cracked glass replacement covers single panes and sealed units, and if the gap needs making safe first, emergency boarding up can cover it. Use the quote page or call 07535 916982.

Call Mark on 07535 916982 or request a callback.