Sub-sill with Set Down Building Codes & Rules
- Sub-sill with Set Down Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
Floor System
Membrane
- ≥ 1 : 100 fall to drainage
- Structural Substrate or Screed to form the required Falls
Membrane AUDIT
NCC 2022 V1
All building classes
AS 4654.2 2012, 2.16
14 Sep 2012 to Current
Waterproof Membrane BEST PRACTICE
NCC 2022 V1
Membrane RULES
NCC 2022 V3
All Building Classes
NCC 2022 F2D2, S26C3, HP10.2.6 [2019 Table F1.7, 3.8.1.3]
May 2023
AS 4654.2:2012, 2.5.2
- Building elements in Wet Areas to be Waterproof or Water Resistant to the NCC
- ≥ 1 : 100 fall in Membrane to Drainage OutletAS 4654.2:2012, 2.5.2
- Structural Substrate or Screed to form the required Falls
- Design & installation in accordance with AS 4654.1
- Membrane movement Class I, II, or III
- To suit intended service conditions
- Substrate to be smooth, clean, dry & dust-free
- Fillets & Bond Breakers installed on all corners
- Lay & allow to cure as per Manufacturer's Recommendations
- ≥ 1 : 100 fall to drainage
- Structural Substrate or Screed to form the required Falls
Floor system
- ≥ 1 : 80 falls to drainage
- Concrete required over habitable spaces
Roof Terrace or Podium DESIGN
NCC 2022 V1
Balcony DESIGN
NCC 2022 V1
- ≥ 1 : 80 falls to drainage
- Concrete required over habitable spaces
Fixings
- ≤ 600mm CTS
- Seal to prevent water ingress
Fixing RULES
NCC 2022 V1
All Building Classes
AS 4654.2 2012, 2.8.3
May 2023
Fixing BEST PRACTICE
NCC 2022 V1
- ≤ 600mm CTS
- Seal to prevent water ingress
Membrane Height
- Height varies with wind class
Height RULES
NCC 2022 V1
All Building Classes
NCC 2022 F2D2, S26C6, & 10.2.6 [2019 F1.7, 3.8.1.3]
May 2023
AS 4654.2:2012, 2.8.1
- Building elements in Wet Areas to be Waterproof or Water Resistant to the NCC
- Measured from top of finished external level to height of MembraneAS 4654.2:2012, 2.8.1
- FFL in the case of a finish on a Screed Bed, or
- Base of Linear Drain at Zero Threshold Entry, or
- Substrate Membrane where Pavers on Pedestals
- Height sufficient to prevent wind-driven water entry
- Height varies with wind class
Floor finish
- Fall to drainage
- ≥ 1 : 100
- ≥ 1 : 80 recommended
- ≥ P3 or R10 slip rating
Surface FINISHES
NCC 2022 V2
All Building Classes
AS 4654.2 2012, 2.15
May 2023
- Fall to drainage
- ≥ 1 : 100
- ≥ 1 : 80 recommended
- ≥ P3 or R10 slip rating
Termite Management
- Termite control required for Ground Level floor junctions
- ≥ 75mm slab exposure above the external finished floor level to allow easy detection of termites
Termite MANAGEMENT
NCC 2022 V1
All Building Classes
NCC 2022, H1D3 & 3.4.2 [2019 3.1.4.3]
May 2023
Termite RISK
NCC 2022 V2
All Building Classes
NCC 2022, H1D3 & 3.4.1 [2019 3.1.4.2]
May 2023
- Termite control required for Ground Level floor junctions
- ≥ 75mm slab exposure above the external finished floor level to allow easy detection of termites
Waterstop
- Rebate in slab preferred
- Height as required to achieve Membrane Height
Waterstop
NCC 2022 V1
- Rebate in slab preferred
- Height as required to achieve Membrane Height
Substrate
- Smooth, clean, dry & dust free surface
- Class 2 concrete finish preferred
Liquid applied membrane PREPARATION
NCC 2022 V2
All Building Classes
AS 4654.2 2012, 2.5.3.1
May 2023
Partially bonded membrane PREPARATION
NCC 2022 V2
All Building Classes
AS 4654.2 2012, 2.5.3.2
May 2023
Substrate PREPARATION
NCC 2022 V1
Unbonded membrane PREPARATION
NCC 2022 V2
All Building Classes
AS 4654.2 2012, 2.5.3.3
May 2023
- Smooth, clean, dry & dust free surface
- Class 2 concrete finish preferred
End Cap
- Press in cap preferred
- Fully seal to sub-sill
- ≥ 3mm gap to reveal
End Cap WATERPROOFING
NCC 2022 V1
- Press in cap preferred
- Fully seal to sub-sill
- ≥ 3mm gap to reveal
Finished Level
Fall
≥ 1 : 80
Substrate
M
≥ 1 : 100
M
M
Finished Level (Internal)
Membrane
End Cap
Sealant
Sub-Sill
Fall
M
Threshold
Fillet
M
Screed
≥ 1 : 80
≥ 1 : 100
Weepholes
- Direct water out of sub-sill to building exterior
(External)
≥ 3
≥ 10
Floor Finish
Membrane Height
Zero Threshold
Sub-Sill on Hob
