AS 1288:2021: glass in buildings, selection and installation
AS 1288:2021 governs glass selection and installation in Australian buildings. Covers human impact zones, wind loading, safety glazing grades, and NCC 2022.
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AS 1288:2021 is the current Australian Standard for glass selection and installation across all building classes. Every residential build touches it: wind-load sizing, human impact safety glazing, balustrades, skylights, and shower screens all sit under this standard. The NCC 2022 calls it up under Housing Provisions Parts 8.3 and 8.4 as the deemed-to-satisfy path. The 2021 edition (mandatory from 1 May 2023 in most states) tightened balustrade and overhead glazing rules: monolithic toughened glass is banned in barriers above 5 m, and all structural balustrades over 1 m must be engineered. The standard is paywalled; the NCC Housing Provisions Parts 8.3 and 8.4 are free and cover the DTS provisions in full. Glazing is licensed work in NSW and QLD. The biggest claim risk: wrong glass type or thickness in a human impact zone, which drives warranty claims and SafeWork notices.
In plain English
AS 1288:2021 sets the minimum requirements for choosing the right glass and installing it correctly across all Australian buildings. It applies to:
- Wind loading: sizing glass panes to resist wind pressure for the site’s wind classification
- Human impact safety: identifying locations where safety glass is mandatory (doors, low-level windows, bathrooms, stairways, balustrades)
- Special applications: overhead (sloped) glazing, structural glass barriers, glass assemblies, and shopfronts
The 2021 edition replaced the 2006 edition (incorporating Amendments 1, 2, and 3). Standards Australia published AS 1288:2021 in June 2021 (verified 2026-05-08, Standards Australia), and it became mandatory with the NCC 2022 adoption, from 1 May 2023 in NSW, VIC, QLD, and TAS; 1 May 2024 in WA.
The NCC 2022 Housing Provisions call up AS 1288:2021 in two places (verified 2026-05-08, NCC Housing Provisions Part 8.3):
- Part 8.3: Glass selection (wind loading, thickness, framing)
- Part 8.4: Glazing human impact (where safety glass is mandatory)
Clause 8.3.1 states glass must be “of a type within the scope of AS 1288.” Compliance with AS 1288 satisfies the DTS performance path.
What it requires
Wind loading and glass sizing
Glass thickness must be sized against the site’s wind classification. Part 8.3.3 of the NCC Housing Provisions provides three wind-load tables (verified 2026-05-08, NCC Housing Provisions Part 8.3):
| Table | Applies to |
|---|---|
| Table 8.3.3a | Wind class N1 or lower |
| Table 8.3.3b | Wind class N2 or lower |
| Table 8.3.3c | Wind class N3 or lower |
Glass thickness for a given pane is read from the table based on the panel’s longest edge dimension and wind class. Wind classification is determined per AS 4055 for the site. Monolithic annealed glass at 3 mm is capped at a maximum area of 0.85 m2 (Housing Provisions 8.3.2). For high-wind areas (N4 and above, or cyclonic C categories), pane sizing falls outside the Housing Provisions tables and must be designed per AS 1288 directly, with engineering input.
Glass used in barriers (balustrades, pool fences used as barriers) must also withstand loading per AS 1170.1 (Housing Provisions 8.3.1).
Human impact safety glazing: Grade A
AS 1288 and the NCC Housing Provisions Part 8.4 define where Grade A safety glazing is mandatory (verified 2026-05-08, NCC Housing Provisions Part 8.4). Grade A safety glass is toughened glass or laminated safety glass compliant with AS/NZS 2208. When Grade A glass breaks, it breaks into small, blunt fragments rather than large, sharp shards.
Human impact provisions apply to “areas of a building frequented by occupants during everyday activities in which a person could fall into or against the glazed panel.”
Key locations requiring Grade A safety glazing:
| Location | Requirement (Housing Provisions Part 8.4) |
|---|---|
| Doors (8.4.2) | Grade A required throughout the panel |
| Door side panels (8.4.3) | Grade A where nearest vertical sight line is within 300 mm of the doorway edge |
| Full-height panels (8.4.4) | Grade A where the panel could be mistaken for an unobstructed opening |
| Perimeter room glazing (8.4.5) | Grade A where the lowest sight line is less than 500 mm from the finished floor level |
| Bathrooms, ensuites, spa rooms (8.4.6) | Grade A (framed panels) where lowest sight line is below 2,000 mm; minimum 6 mm toughened for unframed edges |
Annealed glass exceptions exist in some locations: for example, annealed glass is permitted in perimeter room glazing above the 500 mm threshold if the pane area is 1.2 m2 or less and minimum 5 mm thick.
NCC 2022 expanded kitchen glazing requirements: clause 8.4.6(1) requires Grade A safety glazing in kitchens, bathrooms, ensuites, and spa rooms where the lowest sight line is less than 2,000 mm, including splash-backs and shower doors. This was not explicit in earlier editions.
Visibility marking
Where safety glazing is required, large panels must have opaque band marking (minimum 20 mm height) positioned 700 mm to 1,200 mm above floor level so the panel is distinguishable as a glazed surface, not an opening (Housing Provisions 8.4.7). Each safety glass pane must carry a permanent etch or non-reusable label stating: standard, manufacturer, grade, thickness, and type (Housing Provisions 8.4.8).
Balustrades and structural glass barriers (key 2021 changes)
The 2021 edition significantly tightened structural glass barrier requirements (verified 2026-05-08, VBA: AS 1288 glass in buildings changes):
- Monolithic toughened glass is banned in barriers protecting a fall height above 5 m. Laminated glass is required.
- All structural glass balustrades protecting a height exceeding 1 m (spigot-fixed, point-fixed, or core-drilled systems) must be designed per AS 1288 Section 3 General Design Criteria. Prescriptive DTS solutions are not available for these systems.
- Post-breakage deflection: structural glass barriers must limit deflection to 250 mm under the specified post-breakage load. This is to prevent complete collapse of a broken panel and allow evacuation time.
For the builder, this means any frameless or semi-frameless structural glass balustrade over 1 m high on a residential project now requires a glazier who can demonstrate compliance with AS 1288:2021 Section 3, or an engineer’s design. The NCC 2022 stairs and balustrades requirements apply alongside AS 1288.
Overhead (sloped) glazing
Sloped glazing above occupied areas: the 2021 edition requires laminated glass for all overhead glazing with limited exceptions. The rationale is that broken toughened glass fragments fall vertically and can cause injury; laminated glass holds fragments in place on the interlayer. Expanded three-sided support configurations for overhead glazing are now included in AS 1288:2021 Section 6.
For builder purposes: any skylight, atrium, or sloped glazed element above an occupied area must use laminated safety glass. Confirm with the glazier that the specified product meets AS 1288:2021 Section 6 before ordering.
Installation requirements
AS 1288 covers installation requirements including:
- Edge cover and clearances: minimum edge cover in frames to ensure glass is retained under load and thermal movement
- Setting blocks: correct positioning and material to carry glass weight and allow thermal movement
- Sealant and glazing compounds: compatibility with glass type and frame material
- Thermal stress: avoiding conditions that cause spontaneous fracture in toughened glass (particularly relevant for heat-soaked toughened glass in partially shaded locations)
AS 1288 recommends heat soaking for monolithic toughened glass in applications where spontaneous fracture fragments cannot be retained (e.g., overhead glazing, structural barriers), though heat soaking is not mandated by the standard itself.
What it doesn’t cover
AS 1288 does not cover:
- Window frame design and installation: frames are governed by AS 2047, which covers window and door design, testing, and labelling
- Aluminium framing systems beyond the glazing interface
- Vehicle glazing and marine glazing
- Mirrors and decorative glass that are not in human impact zones
- Fire-rated glazing: fire-rated glass assemblies are covered by AS 1530 and the NCC fire separation provisions (NCC fire separation), not by AS 1288
- Pool fencing as a standalone barrier where the pool fencing standard (AS 1926.1) applies
- Commercial curtain wall systems (Class 5 to 9 buildings): these fall under NCC Volume One and separate glazing standards
Practical implications
Who does the glazing work
Glazing installation is licensed work in NSW and QLD. In VIC, glazing work requires registration as a Domestic Builder (Limited to Glazing Work).
| State | Licence or registration | Regulator |
|---|---|---|
| NSW | Contractor licence (glazing), threshold: work over $5,000 labour and materials (incl. GST) | Building Commission NSW (verified 2026-05-08, NSW Government glazing work) |
| VIC | Domestic Builder (Limited to Glazing Work) registration | Victorian Building Authority (verified 2026-05-08, VBA building practitioner registration) |
| QLD | Glass, glazing and aluminium contractor licence | QBCC (verified 2026-05-08, QBCC glass and glazing aluminium) |
| WA, SA, TAS, NT, ACT | Licensing requirements vary; confirm with state building regulator before engaging | State building regulator |
Unlicensed glazing work in NSW attracts fines up to $22,000 (individual) or $110,000 (company) under the Home Building Act 1989 (verified 2026-05-08, NSW glazing work).
On-site sequencing
Glazing generally follows structural completion and weatherproofing but sits before internal lining and painting in window and door openings. Shower screens and balustrade glazing are typically among the last trades on site, after tiling and after balustrade posts are set and plumbed.
Sequencing issues to avoid:
- Ordering glass before the opening is frame-measured: glazing tolerances are tight and reordering is expensive
- Applying paint or adhesive to a glass surface before confirming compatibility (some coatings cause thermal stress in toughened glass panels)
- Installing fixed structural glass balustrades before confirming the AS 1288:2021 design compliance documentation is on hand
Common defects at inspection
| Defect | Cause |
|---|---|
| Wrong glass type in human impact zone | Annealed glass installed in a location requiring Grade A safety glazing |
| Missing safety glass marking | Safety glass label removed or panel installed without required etch mark |
| Monolithic toughened glass in balustrade above 5 m | Pre-2021 habit; now a breach of AS 1288:2021 |
| Insufficient edge cover | Glass not retained in frame; risk of pane ejection under wind load |
| No visibility marking on full-height panel | Large annealed or safety glass panel indistinguishable from open doorway |
| Wrong thickness for wind class | Pane sized from the wrong wind-load table or undersized for span |
| Overhead glazing without laminated glass | Toughened glass installed overhead in occupied area; breach of 2021 requirements |
Glass workmanship tolerances
The HIA Guide to Materials and Workmanship sets workmanship tolerances for glass installation (flatness, bow, edge damage, sealant width). Verified numerical values from the Guide are pending HIA member access: [HIA-034].
Source link
Standards Australia: AS 1288:2021 product page (verified 2026-05-08). The standard is paywalled. The NCC Housing Provisions Parts 8.3 and 8.4 cover the DTS provisions and are free at ncc.abcb.gov.au.
References
- Standards Australia, AS 1288:2021 Glass in buildings, Selection and installation (product page). https://store.standards.org.au/product/as-1288-2021 (verified 2026-05-08).
- Standards Australia, Spotlight on: Glass in buildings, Selection and installation, AS 1288:2021. https://www.standards.org.au/blog/as-1288-2021 (verified 2026-05-08).
- Australian Building Codes Board, Part 8.3 Glass, NCC 2022 Housing Provisions. https://ncc.abcb.gov.au/editions/ncc-2022/adopted/housing-provisions/8-glazing/part-83-glass (verified 2026-05-08).
- Australian Building Codes Board, Part 8.4 Glazing human impact, NCC 2022 Housing Provisions. https://ncc.abcb.gov.au/editions/ncc-2022/adopted/housing-provisions/8-glazing/part-84-glazing-human-impact (verified 2026-05-08).
- Victorian Building Authority, AS 1288, Glass in buildings changes. https://www.vba.vic.gov.au/news/news/2024/as-1288-glass-in-buildings-changes (verified 2026-05-08).
- NSW Government, Glazing work (licences and registrations). https://www.nsw.gov.au/business-and-economy/licences-and-credentials/building-and-trade-licences-and-registrations/glazing-work (verified 2026-05-08).
- Queensland Building and Construction Commission, Glass, glazing and aluminium licence. https://www.qbcc.qld.gov.au/licences/apply-licence/available-licences/other-trade/glass-glazing-aluminium (verified 2026-05-08).
- Victorian Building Authority, Building practitioner registration. https://www.vba.vic.gov.au/registration-and-licensing/building-practitioner-registration (verified 2026-05-08).
Related
- NCC 2022 Volume Two, the residential building code that calls up AS 1288 under Housing Provisions Part 8
- NCC stairs and balustrades, the NCC-side view of balustrade requirements that intersect with AS 1288:2021 structural glass barrier rules
- AS 1170 structural actions, wind and structural loading standard referenced in glass barrier design
- Wind classification, the site classification (N1 to N6, C1 to C4) that drives glass thickness selection under AS 1288
- Deemed-to-satisfy, the DTS compliance path that AS 1288 provides under the NCC
- Slip resistance, companion workmanship standard relevant to glazed floor or threshold applications
See also
- AS 4055 wind loads, the wind loading standard used to determine site wind class for glass sizing
- BAL (bushfire attack level), BAL ratings affect glazing specification requirements in bushfire-prone areas
- Tolerance, general workmanship tolerance concepts referenced in glazing installation
Last updated: 2026-05-08. Verified: 2026-05-08. Quarterly review for currency: check current AS 1288 edition status at Standards Australia and confirm NCC Housing Provisions Part 8 adoption by state.