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13.4

NT Part 13.4

NT Part 13.4 Building sealing

NCC Blurbs

This Part applies to—

  1. a Class 1 building; and
  2. a Class 10a building with a conditioned space.

Applications

This Part does not apply to:

  1. A building where the only means of air-conditioning is by using an evaporative cooler.
  2. A permanent building ventilation opening that is necessary for the safe operation of a gas appliance.
  3. A Class 10a building used for the accommodation of vehicles.
NCC Title

Application of Part 13.4

NCC State
NT
NCC SPTC Current
Application of Part 13.4
NCC Blurbs

The chimney or flue of an open solid-fuel burning appliance must be provided with a damper or flap that can be closed to seal the chimney or flue.

NCC Title

Chimneys and flues

NCC State
NT
NCC SPTC Current
Chimneys and flues
NCC Blurbs

(1) A roof light must be sealed, or capable of being sealed, when serving a conditioned space.

(2) A roof light required by (1) must be constructed with—

  1. an imperforate ceiling diffuser or the like installed at the ceiling or internal lining level; or
  2. a weatherproof seal if it is a roof window; or
  3. a shutter system readily operated either manually, mechanically or electronically by the occupant.
NCC Title

Roof lights

NCC State
NT
NCC SPTC Current
Roof lights
NCC Blurbs

(1) A seal to restrict air infiltration must be fitted to each edge of an external door, openable window and other such opening when serving a conditioned space.

(2) The following need not comply with (1):

  1. An external louvre door, louvre window or other such opening.
  2. A window complying with the maximum air infiltration rates specified in AS 2047.

(3) A seal required by (1) may be a foam or rubber compressible strip, fibrous seal or the like.

NCC Title

External windows and doors

NCC State
NT
NCC SPTC Current
External windows and doors
NCC Blurbs

An exhaust fan must be fitted with a sealing device such as a self-closing damper, filter or the like when serving a conditioned space.

Explanatory information

An exhaust fan is considered to be adequately sealed if it is fitted with a filter such as the type commonly used in kitchen range hoods.

NCC Title

Exhaust fans

NCC State
NT
NCC SPTC Current
Exhaust fans
NCC Blurbs

(1) Ceilings, walls, floors and any opening such as a window frame, door frame, roof light frame or the like must be constructed to minimise air leakage in accordance with (2) when forming part of the external fabric a conditioned space.

(2) Construction required by (1) must be—

  1. enclosed by internal lining systems that are close fitting at ceiling, wall and floor junctions; or
  2. sealed at junctions and penetrations with—
    1. by close-fitting skirting, architraves, cornices; or
    2. expanding foam, rubber compressive strip, or caulking, or the like.
NCC Title

Construction of ceilings, walls and floors

NCC State
NT
NCC SPTC Current
Construction of ceilings, walls and floors
NCC Blurbs

An evaporative cooler must be fitted with a self-closing damper or the like when serving a heated space.

Explanatory information

The self-closing damper should create an effective seal against air infiltration.

NCC Title

Evaporative coolers

NCC State
NT
NCC SPTC Current
Evaporative coolers