Grandeur® Non-Cyclonic

For further information, please refer to sections “Rainfall Intensity” and “Water Carrying Capacity and Rainwater Run-Off”.

Figure GR (325 & 525) RC NC 001

The design pressures, allowable spans and design data for Grandeur® have been determined from tests carried out in accordance with on the following Australian Standards:

• AS 1170.2:2011 Structural design actions Part 2: Wind actions
• AS 1562.1-2018 Design and installation of sheet roof and wall cladding Part 1: Metal
• AS 4040.0-1992 Methods of testing sheet roof and wall cladding Part 0: Introduction, list of methods and general requirements
• AS 4040.1-1992 Methods of testing sheet roof and wall cladding Method 1: Resistance concentrated loads
• AS4040.2-1992 Methods of testing sheet roof and wall cladding Method 2: Resistance to wind pressures for non-cyclone regions
• AS4040.3-1992 Methods of testing sheet roof and wall cladding Method 3: Resistance to wind pressures for cyclone regions
• AS4055:2012 Wind Loads for Housing

SA HB 39: 2015 Handbook - Installation code for metal roof and wall cladding National Construction Code of Australia.

Fielders® Grandeur® profile is a concealed fixed cladding system that is sound for both direct installation onto steel battens, or conventional plywood backing. For ply substrate installations, a minimum of 15mm thick plywood must be used and fixed with 10g-16x40mm wing-teks with countersunk rib heads at 150 centres. Screws located at the end of the plywood panel need to be a minimum of 50mm from the edge. Alternatively, Grandeur® can be installed directly onto 40mm x 0.55 BMT G550 steel battens with a maximum span of 1200mm.

To allow for expansion and contraction, a combination of fixed and sliding clips should be used to install the profile, as detailed in this section start n Figure GR CL NC 001 & 002.

For typical clip, wall and roof sheet layouts on plywood see Figure GR ID NC 001.

The maximum recommended sheet length for Grandeur® utilising sliding clips is 24m. When Grandeur® is supported on 40mm steel battens, fixed clips are to be used throughout with a maximum sheet length of 12m. It should be noted that fixed clips will restrict thermal movement of the profile and that this may contribute to oil-canning on wider profiles and darker colours.  Shorter lengths may need to be considered if this is a concern.

Figure GR ID NC 001

Please note: “a” may be calculated as:

Overall building length (OBL) x 0.2. - If OBL x 0.2 < 1200mm then 1200mm shall apply
Average building height (ABH) x 0.2. - If ABH x 0.2 < 1200mm then 1200mm shall apply

The cladding is to be installed with the seam running perpendicular with the battens or purlins. The seam is then formed using a specifically designed seaming tool that bends the lip of the female rib 90 degrees, locking it onto the male rib. This process can also be repeated with aluminium material to form a double seam.

Typical Roofing Installation

Step 1

Starting from the lowest part of the roof, lay across the roof plywood an anti-abrasive membrane. Proceed to lay further runs up the roof pitch until the whole of the plywood is covered. Make sure that all the laps are from the top run over the lower run so any moisture will run into the gutters.

Step 2

Install a starter edge trim before attempting to fix the first panel. See Figure GR ID NC 002.

Step 3

Place the first panels female rib over the lip of the edge trim and when engaged, lay the panel flat on the covered plywood.

Step 4

Fit the clips to the male rib as per the details mentioned above, making sure they are square with no sharp edges protruding and screws fully tightened.

Step 5

Remove any protective strippable film before fixing the next panel.

Step 6

Place the next panel’s female rib over the male rib and repeat step 4.

Step 7

Continue to repeat Step 4,5 & 6 until the roof is fully covered.

Step 8

Seam the ribs with one pass for the single seam and two passes for the double seam (aluminium only).

Step 9

Flash the roof with products of the same material as the

roof panels as per architect’s details.

Care needs to be taken when installing insulation with Grandeur® roof sheeting. When insulation thicknesses up to 50mm are installed the screws may need to be increased depending on the thickness and density of the insulation. When the screw is properly tightened into metal there should be a minimum of three (3) threads protruding past the support being fixed in to. For timber, the screw must have a minimum embedment of 25mm into timber.

When insulation is required in conjunction with Finesse® profiles, Fielders® recommend the use of a thermal spacer to help maintain Rw values as well as minimising any bulging in the profile caused by the insulation.

Insulation blankets and batts can cause wide flat pan cladding to bow out between the supports, between fasteners along the support, or bow the pans. For insulation blankets and batts as well as more dense glass wool and rock wool, and thicker insulation, spacers are recommended.

A wider range of Construction details covering fixing to ply substrate is available for download at https://specifying.fielders.com.au/downloads.