Stone Threshold Building Codes & Rules

- Stone Threshold Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.

Internal Waterproofing Overview

AS 3740:2021, 4.10

Sealant Bead^{AS 3740:2021, 4.10}

Industry Recommendation

Waterstop Angle^{Industry Recommendation}

Preferred alignment to center of Door Leaf

Tools™ Best Practice

Jambs & Architraves^{Tools™ Best Practice}

Never embed in Tiles
Prime cut ends
Seal under ends to Tiles

AS 3740:2021, 4.2

NCC 2022 HP, 10.2.21

Sealer Membrane^{AS 3740:2021, 4.2NCC 2022 HP, 10.2.21}

Stone Threshold

Bedding

Sealant

Stone Threshold - RCC Requirement

Sized to suit Threshold
Set into Door Rebate & extend across Door Opening as per site specific requirements

Sealant

Floor finish

Fall to Drain

Top of Membrane

Topping if Required

Substrate

Fall

NCC 2022 Vol 1, F2D4 (2)

NCC 2022 HP, 10.2.12 (a)

1 : 80 to 1 : 50^{NCC 2022 Vol 1, F2D4 (2)NCC 2022 HP, 10.2.12 (a)}

AS 3740:2021, 4.9.2 (b)

≥ 2^{AS 3740:2021, 4.9.2 (b)}

AS 1428.1:2009, 7.2 (a)

≤ 3^{AS 1428.1:2009, 7.2 (a)}

AS 3740:2021, 2.3.1

AS 3740:2021, 2.3.5

≥ 1 : 100^{AS 3740:2021, 2.3.1} / 1 : 80^{AS 3740:2021, 2.3.5}

Stone Threshold - Taylor Requirement

Sized to suit Threshold
Set into Door Rebate & extend across Door Opening as per site specific requirements

Stone Threshold

Sized to suit Threshold
Set into Door Rebate & extend across Door Opening as per site specific requirements

3 - 6

AS 3740:2021, 4.9.1 (c) (ii)

≥ 25^{AS 3740:2021, 4.9.1 (c) (ii)}

Sealant

3 - 6

Split Jamb

Foam Expansion Joint

Split Jamb

Sealant over anchor screws

AS 3740:2021, 4.2

NCC 2022 HP, 10.2.21

Membrane^{AS 3740:2021, 4.2NCC 2022 HP, 10.2.21}

AS 3740:2021, 4.10

Fillet^{AS 3740:2021, 4.10}

AS 3740:2021, 4.10

Sealant /

Adhesive^{AS 3740:2021, 4.10}

Finished Floor Level

Membrane Above Screed

Wall Lining

Anti-fungal Sealant

Wet area level

Screed

Top of Tile

Floor Tile

Adhesive

Wall Finish (Tiles)

Cavity Sliding Door

Show Waterstop Angle

Swing Door

Show Membrane

Typical Threshold

Floor Finish

Tile selection
P3 or R10 Slip Rating^[1]
Movement Joints^[2]
≤ 4.5m CTS
Align with Structural movement or Control Joints
Above load bearing Beams or Walls

Tile TOLERANCE

NCC 2022 V2

All Building Classes

NCC 2022 F2D2, S26C3 [2019 F1.7]

NCC 2022 HP10.2.12

May 2023

NCC 2022 Vol 1, F2D4 (2)

AS 3740:2021, 2.3.1

AS 3740:2021, 2.3.5

NSW 2017 Guide to Standards & Tolerances, 12.6

AS 3958.1:2007, 5.4.6 (c)

AS 3958.1:2007, 5.4.6 (a)

NCC 2022 HP, 10.2.12

Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2, & AS 3740
Falls to Substrate
≥ 1 : 100 typically^{NCC 2022 Vol 1, F2D4 (2)}
≥ 1 : 80 if whole room is an Unenclosed Shower^{AS 3740:2021, 2.3.1}
Falls to Floor Finish
≥ 1 : 80 to 1 : 50^{AS 3740:2021, 2.3.5NSW 2017 Guide to Standards & Tolerances, 12.6}
Ponding
< 1.5mm deep surface tension after 15 minutes
Installation tolerance
Standards & Tolerance Guides (Various States)^{AS 3958.1:2007, 5.4.6 (c)}
Grout Joints^{AS 3958.1:2007, 5.4.6 (a)}
3 to 6mm floor grout joints
1 to 2mm wall grout joints
Lippage for Joints & Flatness^{NCC 2022 HP, 10.2.12}
≤ 1mm lippage for joints ≤ 3mm
≤ 2mm lippage for joints ≥ 3mm
± 4mm in 2m flatness tolerance

Slip RATING

NCC 2022 V2

All Building Classes

NCC 2022 D1P2

May 2023

NCC 2022 Vol 1, D1P2

NCC 2022 Vol 1, D3D15

HB 198:2014, 4.3.2 (Table 3A)

HB 198:2014, 5.2 (Table 3B)

Slip resistance performance requirements according to NCC^{NCC 2022 Vol 1, D1P2NCC 2022 Vol 1, D3D15HB 198:2014, 4.3.2 (Table 3A)HB 198:2014, 5.2 (Table 3B)}

HB 198:2014, 5.1

AS 3958.1:2007, 5.4.5.2

Tile selection
P3 or R10 Slip Rating^{HB 198:2014, 5.1}
Movement Joints^{AS 3958.1:2007, 5.4.5.2}
≤ 4.5m CTS
Align with Structural movement or Control Joints
Above load bearing Beams or Walls

Membrane

Turn the Membrane down into the Leak Control Flange^[1]
Compatible to suit Substrate & bedding / finishes^[2]
Test & protect from damage^[3]

Membrane AUDIT

NCC 2022 V2

All Building Classes

NCC 2022 F2D2, S26C3, 10.2.26 [2019 F1.7]

May 2023

AS 3740:2021, 4.5.4 (a)

AS 3740:2021, 4.5.4 (b)

AS 3740:2021, 4.5.4 (c)

AS 3740:2021, 4.5.2

Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2, & AS 3740
Curing & protection^{AS 3740:2021, 4.5.4 (a)}
Fully cured to manufacturers' recommendations
Protect from physical & chemical damage until covered by finishes
Flood testing^{AS 3740:2021, 4.5.4 (b)}
If any leaks occur, these shall be repaired following the system design & retested
Electronic leak detection^{AS 3740:2021, 4.5.4 (c)}
If any discontinuities occur, these shall be repaired & retested only on the repaired areas
Seam probe testing^{AS 3740:2021, 4.5.2}
If any seam failures occur, these shall be repaired & retested

Membrane Curing & Inspection RULES

NCC 2022 V2

All Building Classes

NCC 2022 F2D2, S26C3, 10.2.28 [2019 F1.7]

May 2023

AS 3740:2021, 4.5.2

AS 3740:2021, 4.5.3

Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2, & AS 3740
Fully cure prior to any testing^{AS 3740:2021, 4.5.2}
Visual inspection conducted prior to application of overlay finishes^{AS 3740:2021, 4.5.3}

AS 3740:2021, 4.3.1 (a)

AS 3740:2021, 3.2

AS 3740:2021, 4.17 (b)

Turn the Membrane down into the Leak Control Flange^{AS 3740:2021, 4.3.1 (a)}
Compatible to suit Substrate & bedding / finishes^{AS 3740:2021, 3.2}
Test & protect from damage^{AS 3740:2021, 4.17 (b)}

Membrane Substrate

≥ 1 : 100 fall required towards the Floor Waste^[1]
≥ 1 : 80 fall required to entire room where Shower unscreened^[2]
Form falls in Structural Floor or Screed^[3]
Smooth, clean, dry & dust free surface^[4]

Substrate PREPARATION

NCC 2022 V4

All Building Classes

NCC 2022 F2D2, S26C3, & HP10.2.9 [2019 F1.7]

May 2023

AS 3740:2021, 4.4.1

Building elements in Wet Areas to be Waterproof or Water Resistant to the NCC
All surfaces to be prepared for Waterproofing System adhesion^{AS 3740:2021, 4.4.1}
Smooth, dust-free, clean & dry surface
Fill voids
Grind smooth any protrusions
Free of formwork deformity
Prime substrate to prohibit pin-holing during the membrane curing process
Moisture test & apply primer as per Manufacturer's Recommendations

Substrate PREPARATION

NCC 2022 V1

AS 3740:2021, 2.3

AS 3740:2021, 4.4.1

AS 3740:2021, 2.3.1

AS 3740:2021, 2.3.5

≥ 1 : 100 fall required towards the Floor Waste^{AS 3740:2021, 2.3}
≥ 1 : 80 fall required to entire room where Shower unscreened^{AS 3740:2021, 4.4.1}
Form falls in Structural Floor or Screed^{AS 3740:2021, 2.3.1}
Smooth, clean, dry & dust free surface^{AS 3740:2021, 2.3.5}