Cavity Slider Waterstop Building Codes & Rules
- Cavity Slider Waterstop Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
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M
Floor Tile
Sealer Membrane (Stone Finish only)
AS 3740:2021, 2.3.1
AS 3740:2021, 2.3.5
≥ 1 : 100AS 3740:2021, 2.3.1 / 1 : 80AS 3740:2021, 2.3.5
Waterstop Angle
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Foam Expansion Joint
Wet Area Level
Anti-fungal Sealant
Fall
Substrate
Membrane
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Cavity Sliding Door
AS 3958.1:2007, 3.3.3.1 (e)
Fall
AS 3740:2021, 4.9.2 (b)
NCC 2022 Vol 1, F2D4 (2)
NCC 2022 HP, 10.2.12 (a)
1 : 80 to 1 : 50NCC 2022 Vol 1, F2D4 (2)NCC 2022 HP, 10.2.12 (a)
AS 3740:2021, 4.9.1 (c) (ii)
Jambs & Architraves
- Never embed in Tiles
- Prime cut ends
- Seal under ends to Tiles
Finished Floor Level
Split Jamb
Top of Membrane
Screed
Wall Finish (Tiles)
Floor Finish
Sealant over anchor screws
Localised levelling compound to align floor finish levels
Split Jamb
Sealant / Adhesive
Wall Lining
AS 1428.1:2009, 7.2 (a)
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Sealant
Sealant bead
Adhesive
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Top of Tile
Waterstop Angle
- Preferred alignment to center of Door Leaf
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 adhesionAS 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 WasteAS 3740:2021, 2.3
- ≥ 1 : 80 fall required to entire room where Shower unscreenedAS 3740:2021, 4.4.1
- Form falls in Structural Floor or ScreedAS 3740:2021, 2.3.1
- Smooth, clean, dry & dust free surfaceAS 3740:2021, 2.3.5
Swing Door
Stone 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 typicallyNCC 2022 Vol 1, F2D4 (2)
- ≥ 1 : 80 if whole room is an Unenclosed ShowerAS 3740:2021, 2.3.1
- Falls to Floor Finish
- ≥ 1 : 80 to 1 : 50AS 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 JointsAS 3958.1:2007, 5.4.6 (a)
- 3 to 6mm floor grout joints
- 1 to 2mm wall grout joints
- Lippage for Joints & FlatnessNCC 2022 HP, 10.2.12
- ≤ 1mm lippage for joints ≤ 3mm
- ≤ 2mm lippage for joints ≥ 3mm
- ± 4mm in 2m flatness tolerance
HB 198:2014, 5.1
AS 3958.1:2007, 5.4.5.2
- Tile selection
- P3 or R10 Slip RatingHB 198:2014, 5.1
- Movement JointsAS 3958.1:2007, 5.4.5.2
- ≤ 4.5m CTS
- Align with Structural movement or Control Joints
- Above load bearing Beams or Walls
Waterstop
- ≥ 40mm set down[1]
- ≥ 25mm Screed depth to be maintained when calculating Falls throughout the wet area[2]
- Sealant beads & fillets to protect Membrane[3]
Waterstop RULES
NCC 2022 V2
All Building Classes
NCC 2022 F2D2, S26C3, & Part 10.2.11 to 13 [2019 F1.7]
May 2023
AS 3740:2021, 3.3.1 (a)
AS 3740:2021, 3.3.3 (a) (iv)
AS 3740:2021, 4.9
AS 3740:2021, 3.3.3 (b) (ii)
AS 3740:2021, 3.3.1 (c)
- Building elements in Wet Areas to be Waterproof or Water Resistant to NCC Specification 26, Part 10.2, & AS 3740
- Materials
- Stainless Steel, AluminiumAS 3740:2021, 3.3.1 (a)
- Vinyl Sheet Flooring, welded & sealedAS 3740:2021, 3.3.3 (a) (iv)AS 3740:2021, 4.9AS 3740:2021, 3.3.3 (b) (ii)
- Door openings & protection at Floor level require waterproofing for a watertight sealAS 3740:2021, 3.3.1 (c)
- Use adhesive or mechanically fix to Substrate
- Sealant continuous across Door Opening
- Sealant beads & bond breaking fillets to protect Membrane
Step up PROS & CONS
NCC 2022 V1
Water Stop INSTALLATION
NCC 2022 V1
Waterstop Angle
NCC 2022 V1
NCC 2022 HP, 10.2.2 (1) (c)
AS 3958.1:2007, 3.3.3.1 (e)
AS 3740:2021, 4.9.1 (d) (ii)
- ≥ 40mm set downNCC 2022 HP, 10.2.2 (1) (c)
- ≥ 25mm Screed depth to be maintained when calculating Falls throughout the wet areaAS 3958.1:2007, 3.3.3.1 (e)
- Sealant beads & fillets to protect MembraneAS 3740:2021, 4.9.1 (d) (ii)
Membrane
Wall Linings
- 6mm Fibre-cement for typical Tile or paint finish
- 8mm gap to Structural Floor
Wall Lining INSTALLATION
NCC 2022 V1
Wall Lining SELECTION
NCC 2022 V3
- Refer to Manufacturer's Recommendations for Fixing type & spacing
- 6mm Fibre-cement
- Preferred for typical installations
- ≤ 13mm thick vitrified or ceramic tiles
- 9 to 12mm Fibre-cement
- Where thicker stone tiles are to be used
- WR Plasterboard
- NOT in shower areas
- ≤ 6mm Tiles or Paint finish
- 6mm Fibre-cement for typical Tile or paint finish
- 8mm gap to Structural Floor
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 & protectionAS 3740:2021, 4.5.4 (a)
- Fully cured to manufacturers' recommendations
- Protect from physical & chemical damage until covered by finishes
- Flood testingAS 3740:2021, 4.5.4 (b)
- If any leaks occur, these shall be repaired following the system design & retested
- Electronic leak detectionAS 3740:2021, 4.5.4 (c)
- If any discontinuities occur, these shall be repaired & retested only on the repaired areas
- Seam probe testingAS 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 testingAS 3740:2021, 4.5.2
- Visual inspection conducted prior to application of overlay finishesAS 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 FlangeAS 3740:2021, 4.3.1 (a)
- Compatible to suit Substrate & bedding / finishesAS 3740:2021, 3.2
- Test & protect from damageAS 3740:2021, 4.17 (b)
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