Guide
B1D4 is the split. Everything else is a special case.
Framed external-wall windows usually live in AS 2047. Frameless doors, skylights, balustrade glass and on-site windows live in AS 1288. This guide works the list.
At a glance
The useful facts before the deep dive
This is the long version of the windows hub. Keep B1D4 open.
The AS 2047 pile
In an external wall: ordinary windows (except those sent to 1288); framed sliding and swinging doors including framed french and bi-folds; adjustable louvres; shopfronts; one-piece window walls. These are tested assemblies. Housing Provisions 8.3 says Part 8.3 selects glass; water and mullions belong to the assembly.
The AS 1288 pile
Everything not in that list, and specifically: internal glazing; revolving doors; fixed louvres; skylights and non-vertical windows; frameless sliding and swinging doors; on-site and one-off untested windows; second-hand, reused, recycled and heritage windows; balustrade glazing and sloping overhead glazing.
AS 1288:2021 is selection and installation under wind, human impact and special applications. It excludes lift cars and furniture glass.
Human impact on top
Part 8.4 still applies to people walking into glass. 8.4.2 doors, 8.4.3 side panels, 8.4.5 low perimeter glass, 8.4.7 visibility. A WERS sticker is not a visibility band.
Wind
Housing Provisions 8.3 points at wind classification and AS 4055 for some housing paths. NCC referenced documents list AS/NZS 1170.2:2021. We will not assign your suburb a class.
Write 2047 or 1288 on the request for quote. If the brochure only says “complies”, it is a brochure.
Common mix-ups on the AS 2047 and AS 1288 split
- Calling every glass thing a window.
- Using a recycled sash as a free pass.
- Ignoring 8.4 because 2047 was stamped.
None of those mix-ups are solved by a nicer render. They are solved by naming a clause.
Questions to put on the drawing
- External or internal.
- Framed or frameless.
- 2047 or 1288.
- Which 8.4 subclause if people can hit it.
If the practitioner cannot answer those in writing, you do not yet have a specification for the AS 2047 and AS 1288 split. You have a conversation.
Sources this page is allowed to lean on
Public pages only: Housing Provisions 8.4, Housing Provisions 11.3 when a fall is involved, Volume One B1D4 when the assembly type is in dispute, AS 1288:2021 as described by Standards Australia, and the NCC referenced documents for the AS/NZS 1170 series. We do not invent a thickness for a “normal” house.
The hub is the map. This guide is the worked list.
This URL is on purpose. The archive already taught people to look here. The sentences are new. The footer disclaimer still applies: general information, not professional advice, and other people’s marks stay other people’s marks.
Reading order for When windows use AS 2047 or AS 1288 (1)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (2)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (3)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (4)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (5)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (6)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (7)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Reading order for When windows use AS 2047 or AS 1288 (8)
Read the matching hub first if you arrived here cold. Then read this page for the noun in the URL. Then open safety standards and keep it beside the drawing. Then write the clause on the request for quote. Then let a licensed practitioner correct you. That loop is the method of this rebuild, and it is the only way When windows use AS 2047 or AS 1288 stays honest.
If you are writing a trades or home guest post, cite the ABCB or Standards Australia URL, not a memory of this paragraph. If you are a homeowner, do not treat this extra section as a certificate. It exists so the heritage path is a real guide rather than a stub. The facts still live in 8.4, 11.3 and B1D4.
Questions homeowners ask
What visitors always ask
Each answer starts with the point, then the useful detail.
When does AS 2047 apply instead of AS 1288?
NCC Volume One B1D4 sends framed external-wall windows (with listed exclusions), framed sliding and swinging doors, adjustable louvres, shopfronts and one-piece window walls to AS 2047. The listed remainder, including internal glazing and frameless doors, go to AS 1288.
Do I still worry about human impact on an AS 2047 window?
Yes. Housing Provisions Part 8.4 still covers doors, side panels, low glass, bathrooms and visibility. The assembly standard and the human-impact part are different layers.
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