Balcony - Water Resistant Building Codes & Rules
- Balcony - Water Resistant Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
Timber Framing Balconies & Decks
Finished Floor
Joist
AS 3958.1:2007, 4.4.5 (c)
Drip Edge profile with drainage
Fascia / Beam
5 to 8
Flashing
Flashing
AS 3958.1:2007, 4.4.5 (a)
Flashing
HB 39:2015, 8.3
Fall
Adhesive
Membrane
PVC Angle
150
≥ 50
Flashing
Floor Tiles
Joist Hanger
Optional fascia trim
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
1 : 80
Drip Edge
Intermediate Joists
To Sheet Manufacturer's Recommendations
Back Blocking to support
Balustrade Posts or sheet ends
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
Fall
1 : 80
Slip Rating
Slip Rating
NCC 2022 V1
All Building Classes
NCC 2022, D3D15
May 2023
Timber Floor Framing
Compressed
Fibrecement
Decking Sheet
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
1 : 80
Fall
Control Joint aligns with all Sheet Joints
Cladding
Flashing
Sealant Adhesive
Joist Spacing to suit sheet width
Sheet Width + Joint
Flashing
- Optional
- Only for mechanically fixed Balcony
- Protects Timber Structure
M
M
M
Framing
- Spaced to suit Decking Sheet
- ≥ H3 treated[1]
Framing RULES
NCC 2022 V4
All Building Classes
NCC 2022 B1D4 & H1D6 [2019 B1.3, 3.4.0, 3.4.2-3.4.4]
May 2023
AS 3660.1:2014, D
AS 1684.2:2021, 4.2.2
AS 1684.2:2021, 4.1.4
NCC 2022 Vol 2, H1D6
NCC 2022 Vol 1, B1D4 (f)
- Framing system to be structurally sound to the NCCAS 3660.1:2014, DAS 1684.2:2021, 4.2.2
- Joists must be spaced to align with sheet control jointsAS 1684.2:2021, 4.1.4
- Intermediate joists evenly spaced to suit sheet thickness
- ≥ H3 Treated timber framingNCC 2022 Vol 2, H1D6
- Flashing folded to top to protect from rotNCC 2022 Vol 1, B1D4 (f)
AS 3660.1:2014, D
- Spaced to suit Decking Sheet
- ≥ H3 treatedAS 3660.1:2014, D
Termite Management
Termite Management RULES
NCC 2022 V1
All Building Classes
NCC 2022, H1D3 & 3.4.2 [2019 3.1.4.3]
May 2023
AS 3660.1:2014, 3.3.4 (a)
AS 3660.1:2014, D2 (b)
AS 3660.1:2014, D2 (c)
AS 3660.1:2014, 3.3.2
- Termite Management compliance to the NCC
- ≥ 75mmAS 3660.1:2014, 3.3.4 (a) inspection gap below stirrup
- ≥ H3 TreatedAS 3660.1:2014, D2 (b) timber post
- ≥ H4 & H5 TreatedAS 3660.1:2014, D2 (c) timber pier in contact with ground
- Antcapping must be installed
- ≥ 400mm ground clearance to underside of joist or suspended servicesAS 3660.1:2014, 3.3.2
AS 3660.1:2014, D2 (b)
AS 3660.1:2014, D2 (c)
AS 3660.1:2014, 3.3.4 (a)
- ≥ 75mm inspection gapAS 3660.1:2014, D2 (b)
- H3 Treated above groundAS 3660.1:2014, D2 (c)
- H4 Treated in contact with groundAS 3660.1:2014, 3.3.4 (a)
Termite Management
Concrete Screeds
Floor to Wall Sealant
Joint to Suit Tiling System
