Technical Information

Roofing & Wall Cladding

G.P. Panel

G.P. Panel is the modern, stylish, high strength, light weight sheet cladding material. Made from high tensile steel, the profile has been engineered to give the highest strength and rigidity using the least material. It is manufactured locally by continuous roll forming of prefinished steel coil giving a low cost, high quality product.

INSTALLATION

PRINCIPLE
The sheets of G.P. Panel overlap each other and are fixed progressively along the building in the opposite direction to the prevailing weather. This gives complete weather protection and a fast and efficient method of installation. Each sheet consists of an "over" rib and an "under" rib and when put together form an effective seal which prevents water entry.

PREPARATION
The faces of the supporting members must be true and all in the one plane for a quality job.

LAYING (Ribs Vertical)
Start at the end of the wall which is away from the prevailing weather. The over-edge should be as shown:

LAYING (Ribs Horizontal)
The edge laps must face downwards with the over edge (double side rib) on top as shown. If end laps are necessary on long runs, allow 75mm per lap. End laps should be sealed with suitable sealant.

FIXING

RECOMMENDED FASTENERS
Steel Framing:
Thickness up to 5mm - No 10 x 16 Hex Head Self Drilling Tek with Neo. Washer.
Thickness 5 to 6.4mm - No 14 x 40 Hex Head Self Drilling Tek with Neo. Washer.

Timber Framing:
Hardwood - No 8x20 Hex Head Type 17 Self Drilling Wood Screw with Neo. Washer.

Softwood - No 8x30 Hex Head Type 17 Self Drilling Wood Screw with Neo. Washer.

SIDE LAP FASTENERS
Use No 8 x 12 Hex Head Type S Self Drillng Screw with Neo. Washer OR Sealed Blind Rivet.

These are added at the midspans of the sheets for support spacing over 800mm for walls to give weatherproofing.

METHOD OF FASTENING
G.P. Panel is fixed using a fastener in each valley of each twin rib giving four fasteners per sheet.

PRECAUTIONS
When unloading bundles of sheeting with a crane always use a spreader bar and fabric slings to prevent damage. When manually handling sheets use clean dry gloves and do not drag sheets over each other. Storage of sheets should be above ground and under cover. Do not locate fasteners less than 25mm from the end of sheets. Do not use punches to form holes for fasteners. Holes are to be drilled or self drilling fasteners are to be used.

COVERAGE
G.P. Panel has an effective coverage of 800mm when edge laps of one rib are used.

LENGTHS
G.P. Panel can be cut in the factory to any length specified by the customer.

SUPPORT RECOMMENDATIONS FOR NON-CYCLONIC AREAS

MAXIMUM SUPPORT SPACINGS
The recommended maximum support spacing is 1200mm for buildings located under the following conditions as specified by AS.1170 Part 2 SAA Wind Code:

- Max. Building Height - 3m
- Wind Velocity - 50 m/s
- Internal Pressure Coefficient - +0.2
Terrain Category - 3

FIXING POSITIONS

SPANS

(Note: For cyclonic refer to local manufacturer or click here for more details.)

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