Construction Requirements BAL-19 Building Codes & Rules

- Comply with Bushfire Construction Requirements with Tools™: BAL-19 requirements, fire danger insights, & detailed guidance for walls, roof, guttering & more!

Permanently Closed Window

Self-closing

Fire Door

Garage Door

NSW RFS 2019 PBP, 7.6

Fencing

< 6m from Building to be non-combustible^{NSW RFS 2019 PBP, 7.6}

-/60/60 FRL

AS 3959:2018, 3.2.1 (a) (i)

-/60/30 FRL^{AS 3959:2018, 3.2.1 (a) (i)}

Bushfire Shutter (optional)

AS 3959:2018, 3.2.3 (a)

> 6m^{AS 3959:2018, 3.2.3 (a)}

AS 3959:2018, 3.2.1 (a)

-/60/60 FRL^{AS 3959:2018, 3.2.1 (a)}

Wall

AS 3959:2018, 3.2.1 (a) (ii)

-/60/- FRL^{AS 3959:2018, 3.2.1 (a) (ii)}

AS 3959:2018, 3.2.1

Wall & Openings Fire Separated from Garage^{AS 3959:2018, 3.2.1}

Only if the attached Garage is not constructed to BAL requirements

Eaves & Fascias

Change the description

Fire Door

Skylights

Sealed & of Grade A Safety Glass^[1]

Skylight RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.5 (e)

AS 3959:2018, 6.6.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Skylight^{AS 3959:2018, 6.6.5 (e)}
Sealed / fully flashed with non-combustible material
Grade A safety glass to AS 1288
Polymer skylight allowed with Grade A safety glass diffuser below glazing
Insulated glazing unit requires ≥ 4mm thick Grade A toughened safety glass to outer panel
Tubular Skylights^{AS 3959:2018, 6.6.5}
Flashing may consist of fire-retardant materials
≤ 5 Flammability Index of under-flashing

AS 3959:2018, 6.6.5

Sealed & of Grade A Safety Glass^{AS 3959:2018, 6.6.5}

Windows & Glazed Doors

Openable Screens^[1]
≥ 5mm Toughened Glazing^[2]

Ember Holding Surface

NCC 2022 V3

Remember
Embers can blow & accumulate against a vertical building element causing it to ignite
Any surface including ground, deck, or roof can hold embers if < 18° slope & if > 110mm width

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

Bushfire Resisting Timber BAL-19

NCC 2022 V3

All Building Classes

NCC 2022 G5, H7D4, & S1

[2019 G5, 3.10.5, Sch 5]

May 2023

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to NCC Specification 1, NCC Part G5, & AS 3959
Bushfire-resisting Timber to AS 3959
Timber species per AS 3959
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance

Window RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.5.3 (c) (i)

AS 3959:2018, 6.5.3 (c) (v)

AS 3959:2018, 6.5.3 (c) (iii)

AS 3959:2018, 6.5.3 (a)

AS 3959:2018, 6.5.3 (b)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Glazing^{AS 3959:2018, 6.5.3 (c) (i)}
≥ 5mm toughened glass for glazing < 400mm above a deck, ground, or other ember-holding surfaces
If double-glazed, apply to outer pane
Glass blocks
AS 1288 compliant annealed glass allowed for other windows
Frames^{AS 3959:2018, 6.5.3 (c) (v)}
Frames to be metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Screens^{AS 3959:2018, 6.5.3 (c) (iii)}
Screen to openable panels
If annealed, externally screen both fixed & openable portions
Metal, bushfire-resisting timber, or allowed timber species
No requirements on window if
Protected by a bushfire shutter, or^{AS 3959:2018, 6.5.3 (a)}
Protected by screens^{AS 3959:2018, 6.5.3 (b)}

AS 3959:2018, 6.5.3 (c) (v)

AS 3959:2018, 6.5.3 (c) (iii)

Openable Screens^{AS 3959:2018, 6.5.3 (c) (v)}
≥ 5mm Toughened Glazing^{AS 3959:2018, 6.5.3 (c) (iii)}

Fire-stopping Penetrations

Roofing

Assembly^[1]
Non-combustible materials
Fully sarked, junctions sealed
Vents fitted with ember guards

Eaves & Fascia RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.6

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Components^{AS 3959:2018, 6.6.6}
Gables constructed as per wall requirements
Fit openings for ventilation of eaves, with ember guards & protect with screens
Seals to be of corrosion-resistant aluminium, bronze, or steel
Seal joints with timber storm moulds or plastic joining strips

Tiled Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof to be entirely sarked^{AS 3959:2018, 6.6.2}
Sarking^{AS 3959:2018, 6.6.2}
Installed over Roof Frame, including hips & ridges
Turned up into gutters & valleys
Battens can be installed on top of the sarking

Roofing RULES

NCC 2022 V1

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.1

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roofing^{AS 3959:2018, 6.6.1}
Non-combustible cover
Seal Roof/Roof & Roof/Wall junctions, or
Backed with a breathable sarking or mesh
Fit roof ventilation openings with non-combustible ember guards, or screens
Evaporative coolers AS/NZS 60335.2.98 compliant
If with an internal damper preventing ember entry, does not require external screening

Guttering RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.7

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Non-combustible^{AS 3959:2018, 6.6.7}
Gutter & Valley Leaf Guards
Box Gutter
Flashing at Roof junction

Penetration RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Penetration^{AS 3959:2018, 6.6.5}
Sealed with non-combustible material
Openings screened
≥ 4mm toughened Grade A safety glass for overhead glazing
Fit evaporative coolers with non-combustible butterfly closers, or
Non-combustible covers with screens ≤ 2mm aperture size or opening

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

Skylight RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.5 (e)

AS 3959:2018, 6.6.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Skylight^{AS 3959:2018, 6.6.5 (e)}
Sealed / fully flashed with non-combustible material
Grade A safety glass to AS 1288
Polymer skylight allowed with Grade A safety glass diffuser below glazing
Insulated glazing unit requires ≥ 4mm thick Grade A toughened safety glass to outer panel
Tubular Skylights^{AS 3959:2018, 6.6.5}
Flashing may consist of fire-retardant materials
≤ 5 Flammability Index of under-flashing

Metal Sheet Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Sheet Roofs^{AS 3959:2018, 6.6.3}
Fully sarked over battens
Insulation blankets with foil backing can be placed above the battens
Seal gaps along fascia, ridges, hips, & wall lines by any of the following
Mesh or perforated screen
Mineral wool
Non-combustible material

AS 3959:2018, 6.6.1

Assembly^{AS 3959:2018, 6.6.1}
Non-combustible materials
Fully sarked, junctions sealed
Vents fitted with ember guards

Decks & Landing

Fully enclosing a sub-floor will provide protection^[1]
Non-combustible material^[2]

Deck & Landing RULES

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.7.1

AS 3959:2018, 6.7.2.4

AS 3959:2018, 6.7.2.1

NSW RFS 2019 PBP, 7.5.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Decking may be spaced^{AS 3959:2018, 6.7.1} & has no requirements unless < 300mm horizontally & < 400mm vertically from a glazed Window or Door^{AS 3959:2018, 6.7.2.4}, then must be
Non-combustible material
Bushfire-resisting Timber
Allowed Timber Species
If Enclosing Walls are constructed & ≤ 400mm from ground^{AS 3959:2018, 6.7.2.1}
Non-combustible material, or
Bushfire-resisting Timber, or
Allowed Timber Species

NSW Enhanced RULES^{NSW RFS 2019 PBP, 7.5.2}

Decks, Landings & Stairs must be constructed to BAL-29 requirements
All elements must be
Non-combustible material, or
Bushfire-resisting Timber

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

AS 3959:2018, 6.7.2.4

AS 3959:2018, 6.3.2.1

Fully enclosing a sub-floor will provide protection^{AS 3959:2018, 6.7.2.4}
Non-combustible material^{AS 3959:2018, 6.3.2.1}

Penetrations

Protection^[1]
Sealed with non-combustible materials
Screen all openings

Penetration RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Penetration^{AS 3959:2018, 6.6.5}
Sealed with non-combustible material
Openings screened
≥ 4mm toughened Grade A safety glass for overhead glazing
Fit evaporative coolers with non-combustible butterfly closers, or
Non-combustible covers with screens ≤ 2mm aperture size or opening

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

AS 3959:2018, 6.6.5

Protection^{AS 3959:2018, 6.6.5}
Sealed with non-combustible materials
Screen all openings

Doors, Frames, Sidelights

Doors with seals all round^[1]
Non-combustible Panels^[2]
Framing materials^[3]
Metal
Bushfire-resistant timber
Allowed timber species
Metal-reinforced uPVC
≥ 5mm Toughened Glass^[4]

Door RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.5.4 (c) (v)

AS 3959:2018, 6.5.4 (c) (vii)

AS 3959:2018, 6.5.4 (c) (i)

AS 3959:2018, 6.5.4 (c) (ii)

AS 3959:2018, 6.5.4 (c) (iv)

AS 3959:2018, 6.5.4 (a)

AS 3959:2018, 6.5.4 (b)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Door Assembly
Install seals & weather strips^{AS 3959:2018, 6.5.4 (c) (v)}
Tight-fitting to door frame and abutting door^{AS 3959:2018, 6.5.4 (c) (vii)}
Door Leaf^{AS 3959:2018, 6.5.4 (c) (i)}
≥ 35mm thk reconstituted, laminated, or solid timber for first 400mm above threshold, or
Hollow core, or reconstituted timber, with non-combustible kickplate for first 400mm above threshold
Glazed door panels with full framing made of metal, bushfire-resisting timber, uPVC, or allowed timber species
Frames^{AS 3959:2018, 6.5.4 (c) (ii)}
Metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Glazing^{AS 3959:2018, 6.5.4 (c) (iv)}
≥ 5mm toughened glass
No requirements on door if
Protected by a bushfire shutter, or^{AS 3959:2018, 6.5.4 (a)}
Protected by screens^{AS 3959:2018, 6.5.4 (b)}

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

AS 3959:2018, 6.5.4 (c) (v)

AS 3959:2018, 6.5.4 (c) (i) (A)

AS 3959:2018, 6.5.4 (c) (iv)

AS 3959:2018, 6.5.4 (c) (ii)

Doors with seals all round^{AS 3959:2018, 6.5.4 (c) (v)}
Non-combustible Panels^{AS 3959:2018, 6.5.4 (c) (i) (A)}
Framing materials^{AS 3959:2018, 6.5.4 (c) (iv)}
Metal
Bushfire-resistant timber
Allowed timber species
Metal-reinforced uPVC
≥ 5mm Toughened Glass^{AS 3959:2018, 6.5.4 (c) (ii)}

Garage & Carport Under

All elements to BAL-19 Rules^[1], or
Fire separated

Carport or Garage Under or Partially Under a Building

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.2 (a)

AS 3959:2018, 3.2.2 (b)

AS 3959:2018, 3.2.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC Specification 1, NCC Part G5, & AS 3959^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Walls, Ceilings, Floors, Structure & Openings to BAL-19 rules^{AS 3959:2018, 3.2.2 (a)}, or
Separate from the main building with^{AS 3959:2018, 3.2.2 (b)}
60/60/60 Structure tested from Outside
-/60/60 Walls & ceiling / floor above, or
≥ 90mm thk Masonry or Earth Walls^{AS 3959:2018, 3.2.2}
-/60/30 Self-closing fire door
-/60/- Permanently closed fire window

AS 3959:2018, 3.2.2

All elements to BAL-19 Rules^{AS 3959:2018, 3.2.2}, or
Fire separated

Floor & Balcony

Fully enclosing the sub-floor will provide protection^[1]
Non-combustible materials if unenclosed^[2]

Unenclosed Sub-floor RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.2

AS 3959:2018, 6.3.2.2 (a) (i)

AS 3959:2018, 6.3.2.2 (a) (ii)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bearers, Joists, & Flooring < 400mm from ground to be of^{AS 3959:2018, 6.2}
Non-combustible material, or
Bushfire-resisting timber
Flooring^{AS 3959:2018, 6.3.2.2 (a) (i)}
Non-combustible
Bushfire resisting Timber
Timber, particleboard, or plywood, with underside covered by sarking or mineral wool, or
AS 1530.8.1 compliant system
Sub-floor space^{AS 3959:2018, 6.3.2.2 (a) (ii)}
Avoid storing combustible materials underneath
Keep free of leaf litter

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

Sub-floor Support RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Unenclosed Subfloor^{AS 3959:2018, 6.2}
Non-combustible material
Bushfire-resisting timber or approved timber species
Avoid storing combustible materials in the Subfloor space
No requirements when Subfloor space is enclosed with^{AS 3959:2018, 6.2}
BAL-19 compliant Wall, or
Protected by screens

Fully-enclosed Sub-floor RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.3.2.1

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
No requirements when subfloor is enclosed with^{AS 3959:2018, 6.3.2.1}
BAL-19 compliant wall, or
Protected by screens
≤ 2mm aperture size or opening
Aluminium, bronze, or corrosion-resistant steel

Ember Holding Surface

NCC 2022 V3

Remember
Embers can blow & accumulate against a vertical building element causing it to ignite
Any surface including ground, deck, or roof can hold embers if < 18° slope & if > 110mm width

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

Wall Construction RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.4.1

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External Wall ≤ 400mm from Ground or Decks^{AS 3959:2018, 6.4.1}
Wall must be fully sarked
≥ 90mm thk Non-combustible materials
Masonry Wall
Precast Concrete Wall
Earth Wall (Mud Brick)
≥ 90mm thk Timber logs (≥ 680kg/m³ density)
Cladding secured to the exterior of a timber or steel-framed wall.
Non-combustible material
≥ 6mm Fibre-cement
Bushfire-resisting Timber
Approved Timber Species
Steel sheeting
Any combination of the options above

AS 3959:2018, 6.3.2.2

AS 3959:2018, 6.3.2.1

Fully enclosing the sub-floor will provide protection^{AS 3959:2018, 6.3.2.2}
Non-combustible materials if unenclosed^{AS 3959:2018, 6.3.2.1}

Wall Lining Installation (FRL)

Eaves & Fascia

Roof Components^[1]
Gables shall follow same rules as per Fire Wall
Eaves penetrations screened
Joints sealed

Eaves & Fascia RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.6

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Components^{AS 3959:2018, 6.6.6}
Gables constructed as per wall requirements
Fit openings for ventilation of eaves, with ember guards & protect with screens
Seals to be of corrosion-resistant aluminium, bronze, or steel
Seal joints with timber storm moulds or plastic joining strips

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

AS 3959:2018, 6.6.6

Roof Components^{AS 3959:2018, 6.6.6}
Gables shall follow same rules as per Fire Wall
Eaves penetrations screened
Joints sealed

Sarking

≤ 5 Flammability Index^[1]
Roofs need a full layer of Sarking^[2]

Sarking RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.10

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Sarking^{AS 3959:2018, 3.10}
≤ 5 Flammability Index
Non-combustible material
Continuous to the outside to walls & roof
Type of Sarking varies on structural location, consulting a professional is recommended

AS 3959:2018, 3.10

AS 3959:2018, 6.6

≤ 5 Flammability Index^{AS 3959:2018, 3.10}
Roofs need a full layer of Sarking^{AS 3959:2018, 6.6}

Walls

Non-combustible material^[1]
Bushfire-resisting Timber^[2]
Joints sealed or covered^[3]

Jointing RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.4.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External joints are closed off, shielded, layered, reinforced with backing, or edge-joined^{AS 3959:2018, 6.4.2}

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

Ember Holding Surface

NCC 2022 V3

Remember
Embers can blow & accumulate against a vertical building element causing it to ignite
Any surface including ground, deck, or roof can hold embers if < 18° slope & if > 110mm width

Vent & Weephole RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen^{AS 3959:2018, 6.4.3}
Of aluminium, bronze, or corrosion-resistant steel

Wall Construction RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.4.1

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External Wall ≤ 400mm from Ground or Decks^{AS 3959:2018, 6.4.1}
Wall must be fully sarked
≥ 90mm thk Non-combustible materials
Masonry Wall
Precast Concrete Wall
Earth Wall (Mud Brick)
≥ 90mm thk Timber logs (≥ 680kg/m³ density)
Cladding secured to the exterior of a timber or steel-framed wall.
Non-combustible material
≥ 6mm Fibre-cement
Bushfire-resisting Timber
Approved Timber Species
Steel sheeting
Any combination of the options above

AS 3959:2018, 6.4.1 (a)

AS 3959:2018, 6.4.1 (c) (iii)

AS 3959:2018, 6.4.2

Non-combustible material^{AS 3959:2018, 6.4.1 (a)}
Bushfire-resisting Timber^{AS 3959:2018, 6.4.1 (c) (iii)}
Joints sealed or covered^{AS 3959:2018, 6.4.2}

Detached Structure

> 6m separation^[1], or
Same Fire-resisting construction^[2], or
Main Building protected by^[3]
≥ –/60/60 FRL Non-loadbearing wall
≥ 60/60/60 FRL Loadbearing wall
–/60/30 FRL Self-closing fire door
–/60/– FRL permanently closed Window

Detached Structure RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.3

AS 3959:2018, 3.2.3 (a)

AS 3959:2018, 3.2.3 (b)

AS 3959:2018, 3.2.3 (c)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
The main building can be protected by having the detached structure with equivalent fire-resisting construction as the main building, or^{AS 3959:2018, 3.2.3}
Separation from Main Building^{AS 3959:2018, 3.2.3 (a)}
≥ 6m horizontal distance, or
Fire Wall protecting main building^{AS 3959:2018, 3.2.3 (b)}
≥ 60/60/60 Loadbearing wall
≥ -/60/60 Non-loadbearing wall
-/60/30 self-closing Fire Door
-/60/- permanently closed window & other openings
Masonry Wall^{AS 3959:2018, 3.2.3 (c)}
≥ 90mm thk leaf
Masonry, masonry-veneer, or earth
Openings protected as above
Fire Doors & Windows to comply to AS 1905.1 & AS 1530.4

AS 3959:2018, 3.2.3 (a)

AS 3959:2018, 3.2.3

AS 3959:2018, 3.2.3 (b)

> 6m separation^{AS 3959:2018, 3.2.3 (a)}, or
Same Fire-resisting construction^{AS 3959:2018, 3.2.3}, or
Main Building protected by^{AS 3959:2018, 3.2.3 (b)}
≥ –/60/60 FRL Non-loadbearing wall
≥ 60/60/60 FRL Loadbearing wall
–/60/30 FRL Self-closing fire door
–/60/– FRL permanently closed Window

Vent & Weepholes

Use rust-proof screens for Vents^[1]
Non-combustible access door^[2]

Door RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.5.4 (c) (v)

AS 3959:2018, 6.5.4 (c) (vii)

AS 3959:2018, 6.5.4 (c) (i)

AS 3959:2018, 6.5.4 (c) (ii)

AS 3959:2018, 6.5.4 (c) (iv)

AS 3959:2018, 6.5.4 (a)

AS 3959:2018, 6.5.4 (b)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Door Assembly
Install seals & weather strips^{AS 3959:2018, 6.5.4 (c) (v)}
Tight-fitting to door frame and abutting door^{AS 3959:2018, 6.5.4 (c) (vii)}
Door Leaf^{AS 3959:2018, 6.5.4 (c) (i)}
≥ 35mm thk reconstituted, laminated, or solid timber for first 400mm above threshold, or
Hollow core, or reconstituted timber, with non-combustible kickplate for first 400mm above threshold
Glazed door panels with full framing made of metal, bushfire-resisting timber, uPVC, or allowed timber species
Frames^{AS 3959:2018, 6.5.4 (c) (ii)}
Metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Glazing^{AS 3959:2018, 6.5.4 (c) (iv)}
≥ 5mm toughened glass
No requirements on door if
Protected by a bushfire shutter, or^{AS 3959:2018, 6.5.4 (a)}
Protected by screens^{AS 3959:2018, 6.5.4 (b)}

Vent & Weephole RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen^{AS 3959:2018, 6.4.3}
Of aluminium, bronze, or corrosion-resistant steel

AS 3959:2018, 6.4.3

AS 3959:2018, 6.5.4 (c) (i) (A)

Use rust-proof screens for Vents^{AS 3959:2018, 6.4.3}
Non-combustible access door^{AS 3959:2018, 6.5.4 (c) (i) (A)}

Attached Structure

Same fire-resisting construction as Main Building^[1] or
Main Building is protected by^[2]
≥ –/60/60 FRL Non-loadbearing wall
≥ 60/60/60 FRL Loadbearing wall
–/60/30 FRL self-closing fire door
–/60/– FRL permanently closed Window

Attached Structure RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.1

AS 3959:2018, 3.2.2

AS 3959:2018, 3.2.1 (b)

AS 3959:2018, 3.2.1 (a)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
The main building can be protected by having the attached structure with equivalent fire resisting construction as the main building, or^{AS 3959:2018, 3.2.1}
Fire Wall required if structure is a garage^{AS 3959:2018, 3.2.2}
Openings protected by^{AS 3959:2018, 3.2.1 (b)}
≥ 60/60/60 FRL Loadbearing wall
≥ –/60/60 FRL Non-loadbearing wall
–/60/30 FRL Self-closing Fire Door
–/60/– FRL permanently closed window
Masonry Wall^{AS 3959:2018, 3.2.1 (a)}
≥ 90mm thk leaf
Masonry, masonry-veneer, or earth
Openings protected as above
Fire Doors & Windows to comply to AS 1905.1 & AS 1530.4

AS 3959:2018, 3.2.1

AS 3959:2018, 3.2.1 (a)

Same fire-resisting construction as Main Building^{AS 3959:2018, 3.2.1} or
Main Building is protected by^{AS 3959:2018, 3.2.1 (a)}
≥ –/60/60 FRL Non-loadbearing wall
≥ 60/60/60 FRL Loadbearing wall
–/60/30 FRL self-closing fire door
–/60/– FRL permanently closed Window

Verandah or Awning Roof

Relation to main roof^[1]
If part of main roof space, requirements as per main roof
If separated, non-combustible cover

Tiled Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.2

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof to be entirely sarked^{AS 3959:2018, 6.6.2}
Sarking^{AS 3959:2018, 6.6.2}
Installed over Roof Frame, including hips & ridges
Turned up into gutters & valleys
Battens can be installed on top of the sarking

Ancillary Roofing RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.4

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Carport, Overhead Awning, & Verandah Roofs^{AS 3959:2018, 6.6.4}
If part of main roof, shall follow main roof requirements
If separated from main roof, a non-combustible cover shall be used & shall follow wall requirements

Post RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.7.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Verandah Posts may be of^{AS 3959:2018, 6.7.5}
Timber installed on galvanised mounting shoes or stirrups
With a clearance ≥ 75mm above the surrounding ground level, or
If < 400mm above deck or ground level, must be of either
Non-combustible material, or
Bushfire-resisting timber, or
Allowed timber species

Metal Sheet Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Sheet Roofs^{AS 3959:2018, 6.6.3}
Fully sarked over battens
Insulation blankets with foil backing can be placed above the battens
Seal gaps along fascia, ridges, hips, & wall lines by any of the following
Mesh or perforated screen
Mineral wool
Non-combustible material

AS 3959:2018, 6.6.4

Relation to main roof^{AS 3959:2018, 6.6.4}
If part of main roof space, requirements as per main roof
If separated, non-combustible cover

Bushfire Shutter

Made of materials resistant to combustion^[1]
Optional & removes window & door requirements^[2][3]
≤ 2mm aperture gaps, slots, or screen^[4]

Bushfire Shutter RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.5.3

AS 3959:2018, 3.7

AS 3959:2018, 6.5.1

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Optional^{AS 3959:2018, 6.5.3}
If not installed, window & door assemblies shall comply with corresponding BAL requirements
Bushfire Shutter^{AS 3959:2018, 3.7AS 3959:2018, 6.5.1}
≥ 1 to be openable from inside to allow escape
Must cover the entire window or door assembly
Able to be closed manually in case of power failure
≤ 2mm gap to wall, frame, & sill
≤ 20% perforated area, uniformly distributed, with ≤ 2mm apertures

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

AS 3959:2018, 6.5.1 (a)

AS 3959:2018, 3.7

AS 3959:2018, 6.5.3

AS 3959:2018, 6.5.4

Made of materials resistant to combustion^{AS 3959:2018, 6.5.1 (a)}
Optional & removes window & door requirements^{AS 3959:2018, 3.7AS 3959:2018, 6.5.3}
≤ 2mm aperture gaps, slots, or screen^{AS 3959:2018, 6.5.4}

Services

Metal for Plumbing above ground^[1]
Power lines to be buried^[2]

Utility Service RULES

NCC 2022 V1

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

NSW RFS 2019 PBP, 5.3.3

AS 3959:2018, 6.8

AS/NZS 1596:2014, 4.4.12

NSW RFS 2019 PBP, 5.3.3

AS 3959:2018, 6.8

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Water Supply
Metal above-ground Water Pipes, Taps, Storage Tank^{NSW RFS 2019 PBP, 5.3.3}
Fire Hydrants prohibited on road carriageway^{AS 3959:2018, 6.8}
Gas Services
Steel or Copper above-ground Gas Pipes^{AS/NZS 1596:2014, 4.4.12}
≥ 0.9mm wall thickness (Gas regulations may require thicker)
≥ 400mm extension inside the building
≥ 100mm underground extension
Refer to local Gas regulations for additional information
Bottled Gas Installation^{NSW RFS 2019 PBP, 5.3.3NSW RFS 2019 PBP, 5.3.3}
Shield or locate away from building
Away from flammable materials
Connections are made of metal
Polymer-sheathed flexible gas supply lines are prohibited
Electricity Services^{AS 3959:2018, 6.8}
Power lines to be buried where applicable
Overhead lines
30m Pole spacing
Refer to ISSC3 for Managing Vegetation Near Power Lines

AS 3959:2018, 6.8

NSW RFS 2019 PBP, 5.3.3

Metal for Plumbing above ground^{AS 3959:2018, 6.8}
Power lines to be buried^{NSW RFS 2019 PBP, 5.3.3}

Garage Doors

Non-combustible materials^[1]
≤ 5 Flammability Index to seals^[2]
Use screens to cover the ventilation slots^[3]

Bushfire-resisting Timber BAL-19

NCC 2022 V4

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire-resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-19 compliance^{AS 3959:2018, 1.5.5}

Garage Doors RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.5.6

AS 3959:2018, 6.5.6 (b)

AS 3959:2018, 6.5.6 (c)

AS 3959:2018, 6.5.6 (d)

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Materials for first 400mm above ground may be any of the following^{AS 3959:2018, 6.5.6}
Non-combustible
Bushfire-resting timber
≥ 6mm fibre-cement sheet
Allowed timber species
Protection
Fitted with guide tracks, weather strips, seals, & brushes^{AS 3959:2018, 6.5.6 (b)}
≤ 5 Flammability Index^{AS 3959:2018, 6.5.6 (c)}
Ventilation^{AS 3959:2018, 6.5.6 (d)}
Protected by screens

Screen RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

AS 3959:2018, 6.4.3

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture size or opening^{AS 3959:2018, 3.6.1}
Aluminium, bronze, or corrosion-resistant steel^{AS 3959:2018, 6.4.3}

AS 3959:2018, 6.5.6 (a) (i)

AS 3959:2018, 6.5.6 (c)

AS 3959:2018, 6.5.6 (d)

Non-combustible materials^{AS 3959:2018, 6.5.6 (a) (i)}
≤ 5 Flammability Index to seals^{AS 3959:2018, 6.5.6 (c)}
Use screens to cover the ventilation slots^{AS 3959:2018, 6.5.6 (d)}

Guttering & Downpipes

Box Gutter non-combustible & fully flashed^[1]
Turn sarking into Gutter^[2]

Guttering RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 6.6.7

Building elements within Bushfire-prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Non-combustible^{AS 3959:2018, 6.6.7}
Gutter & Valley Leaf Guards
Box Gutter
Flashing at Roof junction

AS 3959:2018, 6.6.7

AS 3959:2018, 6.6

Box Gutter non-combustible & fully flashed^{AS 3959:2018, 6.6.7}
Turn sarking into Gutter^{AS 3959:2018, 6.6}