The following section sets out requirements for the handling,
transport, storage and safety precautions in the use of plastic
roof and wall cladding materials.
Plastic roof and wall cladding materials are installed in accordance
with AS 1562.3, 2006.
TRANSPORT, HANDLING AND STORAGE
Plastic roof and wall cladding materials shall be transported
and handled in a manner that prevents damage or disfigurement.
Sheets shall be protected from damage at all times and shall
be stacked on a firm base to avoid damage or distortion. They
shall be kept out of direct sunlight either by sitting the stack
in a shaded area or by covering the stack while providing adequate
ventilation to prevent heat build-up. The height of such stacks
shall not exceed 750 mm.
Special care shall be exercised when long length sheeting is being
handled, particularly in windy conditions. Should work be interrupted
for any reason, all loose sheeting or incomplete sections shall
be adequately secured against possible movement by wind.
Due to the combustibility of plastic materials, they shall be
stored and handled so that they do not contact sources of heat
likely to cause combustion.
Safety mesh used in conjunction with plastic roof cladding materials
shall comply with the requirements of AS/NZS 4389.
Care shall be taken in the selection of the type of plastic
cladding to be used in chemically aggressive environments. In
such cases, the suitability of the sheet shall be confirmed by
consultation with a qualified expert.
The complete plastic cladding system and the supporting structure
and its fastening shall be designed to withstand, with the appropriate
margins of safety, forces not less that the design forces derived
from AS/NZS 1170.2, for the particular circumstances in which
the cladding system will be used.
The complete plastic cladding system shall be deemed to be
designed for the appropriate margin of safety if, on being tested
in accordance with Section 5, it fulfils the requirements of
- The designer’s attention is drawn to the necessity to
provide, at roof edges, ridges and hips, for the combination
of high negative wind pressure on the upper surfaces of the
roof with high positive pressures on the underside. (For further
information on pressure factors see AS/NZS 1170.2.)
- For roof and wall applications in cyclonic areas (see AS/NZS
1170.2), the designer’s attention is drawn to the particular
testing requirements given in Section 5.