Part 8.4 Glazing human impact
New for 2022
- Doors — in accordance with 8.4.2.
- Door side panels — in accordance with 8.4.3.
- Full height glass panels — in accordance with 8.4.4.
- Glazed panels, other than doors or side panels, on the perimeter of rooms — in accordance with 8.4.5.
- Bathrooms, ensuite and spa room glazing — in accordance with 8.4.6.
- Visibility of glazing — in accordance with 8.4.7.
- Identification of safety glass — in accordance with 8.4.8.
Doors, side panels and other framed glazed panels
- unframed doors, other than those incorporated in shower screens or bath enclosures, must be glazed with toughened safety glass with a minimum nominal thickness of 10 mm or laminated toughened safety glass with a minimum total thickness of 10 mm; and
- individual pieces of monolithic annealed glass incorporated in leadlights may be used, to a maximum area of 0.05 m2 with a minimum nominal thickness of 3 mm; and
- for annealed and annealed decorated glass panels in doors—
- for 3 mm and 4 mm annealed glass, the maximum area must not be more than 0.1 m2 with a maximum panel width of 125 mm; and
- for 5 mm and 6 mm annealed glass, the maximum area must not be more than 0.26 m2 with a maximum panel width of 300 mm; and
- for annealed glass in fully framed panels with a thickness of 10 mm or more, with or without bevelled edges, the maximum area must not be more than 0.5 m2; and
- doors in bathrooms, ensuites and spa rooms must be glazed in accordance with 8.4.6.
|Type of glass||Minimum nominal thickness (mm)||Maximum area of pane (m2)|
|Patterned or clear monolithic annealed glass||5||0.3|
|Patterned or clear monolithic annealed glass||6||0.9|
|Grade A toughened and toughened laminated safety glass||3||1|
|Grade A toughened and toughened laminated safety glass||4||2|
|Grade A toughened and toughened laminated safety glass||5||3|
|Grade A toughened and toughened laminated safety glass||6||4|
|Grade A laminated safety glass||5.38||2.2|
|Grade A laminated safety glass||6.38||3|
|Grade A laminated safety glass||8.38||5|
Larger areas of monolithic annealed glass in leadlights are not permitted regardless of glass thickness.
Door side panels
- where the lowest visible sight line is more than 1.2 m above the highest abutting finished floor level, monolithic annealed glass with a minimum thickness of 5 mm and an area of not more than 0.3 m2 may be used; or
- where the lowest visible sight line is more than1.2 m above the highest abutting finished floor level, monolithic annealed glass with a minimum thickness of 10 mm with an area of not more than 0.5 m2, may be used; or
- where the side panel consists of glass louvres with exposed edges or where the louvres are installed less than 500 mm above the highest abutting finished floor level—
- for blade widths not more than 230 mm with blade lengths not more than 1 m, Grade A toughened safety glazing not less than 5 mm thick must be used; and
- for blade widths more than 230 mm, Grade A toughened safety glazing not less than 10 mm thick must be used.
Full height framed glazed panels
- The clear opening width is not more than 500 mm.
- The lowest sight line of the opening is not less than 500 mm above the highest abutting finished floor level.
- The glass is made apparent by means of transoms, colonial bars, other components of the glazing system, permanent motifs or other decorative treatment on or etched into the glass, of sufficient magnitude to be readily apparent, or the glass is opaquely coloured or patterned to indicate its presence.
- A chair rail or handrail not less than 40 mm thick, or the like, is provided at a height of not less than 700 mm above the adjoining ground level.
- The difference in floor level on either side of the panel is greater than 1000 mm.
Glazed panels, other than doors or side panels, on the perimeter of rooms
All framed glazing where the lowest sight line of the glazing panel is less than 500 mm from the highest abutting finished floor level (see Figure 8.4.5) must be—
- Grade A safety glazing material in accordance with Table 8.4.2; or
- monolithic annealed glass not less than 5 mm nominal thickness provided that the area of the glazing panel is not more than 1.2 m2.
Kitchen, bathroom, ensuite, spa room and splash-back glazing
- mirrors, provided a fixed vanity or bench with a height of not less than 760 mm, depth of not less than 300 mm and extending the full width of the mirror is, located in front of the mirror; or
- splash-backs, provided it is fully backed by and continuously adhered to a solid wall material or a fixed cabinet or bench that is—
- a height not less than 760 mm; and
- a depth not less than 300 mm; and
- extending the full width of the splash-back; and
- located in front of the splash back.
|Type of glass||Standard nominal thickness (mm)||Maximum area of pane (m2)||Area (Figure 8.4.6)|
|Safety organic coated glass||3||1||A, B, C, D|
|Safety organic coated glass||4||1.5||A, B, C, D|
|Safety organic coated glass||5||2||A, B, C, D|
|Safety organic coated glass||≥ 6||3||A, B, C, D|
Care should be taken when using showers fitted with safety organic-coated glass and laminated safety glass products that are liable to damage from thermal shock. Thermal shock occurs from hot water from the shower hitting the shower screen during cold weather.
The requirements for glass splashbacks used near gas appliances are covered in AS/NZS 5601.
Visibility of glazing
- the upper edge is not less than 700 mm above the floor; and
- the lower edge is not more than 1.2 m above the floor.
- The height of the glazing is not more than 1 m in any part.
- The width of the glazing panel is not more than 500 mm in any part.
- There is no glazing within 500 mm of the floor.
- The glazing is provided with not less than one fixed glazing bar which must—
- be firmly attached to the stiles to locate and protect each face of the glass; and
- be located with its upper edge not less than 500 mm and its bottom edge not more than 1 m above the floor; and
- have a face width not less than 40 mm.
- Making the glass visible by marking is not a substitute for the use of safety glazing in accordance with this Part.
- A broken line or patterns may be an acceptable form of marking provided it meets the criteria set out in 8.4.7(2).
Identification of safety glass
New for 2022
- Safety glass must be marked in the form of either permanent etching or a label that cannot be reused once removed.
- The permanent etching or label must state the following information:
- The Standard to which the safety glass has been tested.
- Registered name of the manufacturer or supplier.
- Grade of the safety glass.
- Nominal thickness of the safety glass.
- The type of safety glass.
The labelling of safety glass is not intended to remain after completion of construction. Labelling complying with 8.4.8 should remain in place on safety glass to allow relevant practitioners to confirm and certify that the correct type of safety glass has been installed in a specific area of the building.
If a label is able to be removed from the glass, it must be comprised of a material that self-destructs upon removal so as to prevent it being reused on other glass panels.
The type of safety glass can be identified in a way that describes the type used such as “L” for laminated glass or “T” for toughened glass, etc.