Shower Corner Angle Building Codes & Rules

- Learn how to correctly place and fix shower corner angles to prevent leaks, ensuring a waterproof and durable shower with compatible sealants and bond breakers.

Membrane

Above Rose

Above FFL

Timber, or

Steel Stud

Wall Tiles

Neutral Cure Sealant

Flashing

Metal
PVC

AS 3740:2021, 4.11.2 (a)

≥ 30^{AS 3740:2021, 4.11.2 (a)}

Nogging

Wall Linings

Wall lining & fixings to suit Tile Weight
Flush drive fixings
Sealant wipe over heads

Wall Lining SELECTION

NCC 2022 V4

Wall lining & fixings to suit Tile Weight
Flush drive fixings
Sealant wipe over heads

Industry Recommendation, -

5 - 8^{Industry Recommendation, -}

Corner Angle

Installed over shower or bath/shower
≤ 600mm^[1] CTS fixing

Corner Angle RULES

NCC 2022 V1

All Building Classes

NCC 2022 F2D2, S26C3, & Part 10.2.2 [2019 F1.7, 3.8.1.1]

May 2023

AS 3740:2021, 4.11.2

AS 3740:2021, 4.11.2 (a)

Industry Recommendation, -

NCC 2022 Vol 1, S26C3 (1)

NCC 2022 HP, 10.2.2

Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2.2^{AS 3740:2021, 4.11.2AS 3740:2021, 4.11.2}
From floor junction to
≥ 1.8m^{AS 3740:2021, 4.11.2 (a)} above FFL, or
≥ 50mm^{Industry Recommendation, -} above Shower Rose
≤ 600mm^{NCC 2022 Vol 1, S26C3 (1)} CTS fixing
≥ 30mm^{NCC 2022 HP, 10.2.2} overlap to Wall Lining
Wall lining Fixings must not penetrate the Corner Angle

Industry Recommendation, -

Installed over shower or bath/shower
≤ 600mm^{Industry Recommendation, -} CTS fixing

Industry Recommendation, -

5 - 8^{Industry Recommendation, -}

AS 3740:2021, 4.11.2 (a)

≥ 30^{AS 3740:2021, 4.11.2 (a)}

Shower Penetrations

Shower Wall Construction

≥ 1.8m^[1] above FFL Waterproofed

Shower Wall RULES

NCC 2022 V2

All Building Classes

NCC 2022 F2D2, S26C3, & Part 10.2.2 [2019 F1.7, 3.8.1.1]

May 2023

NCC 2022 Vol 1, S26C3 (1) (b)

AS 3740:2021, 4.10

NCC 2022 Vol 1, S26C3 (1)

NCC 2022 HP, 10.2.2

Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2.2^{NCC 2022 Vol 1, S26C3 (1) (b)AS 3740:2021, 4.10}
Class 2, 3 or 4 parts - any Wet Area
Class 5 to 9 - Bathroom, Sink, Laundry or Sanitary Compartment
≥ 1.8m^{NCC 2022 Vol 1, S26C3 (1)} above FFL within a shower to be Waterproofed
Walls & junctions
Penetrations
Waterproofing continuous over the Junction
≥ 12mm^{NCC 2022 HP, 10.2.2} radius Fillet

NCC 2022 Vol 1, S26C3 (1) (b)

≥ 1.8m^{NCC 2022 Vol 1, S26C3 (1) (b)} above FFL Waterproofed

AS 3740:2021, 4.11.2

≥ 50^{AS 3740:2021, 4.11.2}

AS 3740:2021, 4.11.2

≥ 1.8m^{AS 3740:2021, 4.11.2}

Mould Resistant Sealant

Adhesive

Wall Lining

Fillet