NCC 2019 Volume Two
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Part 3.7.1 Fire properties for materials and construction

Part 3.7.1 Fire properties for materials and construction

Appropriate Performance Requirements

Appropriate Performance Requirements

Where an alternative fire property for materials and construction is proposed as a Performance Solution to that described in Part 3.7.1, that proposal must comply with—

  1. Performance RequirementP2.3.1; and
  2. the relevant Performance Requirements determined in accordance with A2.2(3) and A2.4(3) as applicable.

3.7.1.1 General concession — non-combustible materials

The following materials, though combustible or containing combustible fibres, may be used wherever a non-combustible material is required in the Housing Provisions:

(a)

Plasterboard.

(b)

Perforated gypsum lath with a normal paper finish.

(c)

Fibrous-plaster sheet.

(d)

Fibre-reinforced cement sheeting.

(e)

Pre-finished metal sheeting having a combustible surface finish not exceeding 1 mm thick and where the Spread-of-Flame Index of the product is not more than 0.

(f)

Sarking-type materials that do not exceed 1 mm in thickness and have a flammability index not greater than 5.

(g)

Bonded laminated materials where—

(i)

each lamina, including any core, is non-combustible; and

(ii)

each adhesive layer does not exceed 1 mm in thickness and the total thickness of the adhesive layers does not exceed 2 mm; and

(iii)

the Spread-of-Flame Index and the Smoke-Developed Index of the bonded laminated material as a whole do not exceed 0 and 3 respectively.

3.7.1.2 Fire hazard properties

The fire hazard properties of materials used in a Class 1 building, including floor or ceiling spaces common with a Class 10 building, must comply with the following:

(a)

Sarking-type materials used in the roof must have a flammability index not greater than 5.

(b)

Flexible ductwork used for the transfer of products initiating from a heat source that contains a flame must comply with the fire hazard properties set out in AS 4254.1.