Installing CGI Mini

It is best to use at least two people when installing. Ensure the supporting structure is as rigid and flat as possible. Sheets should be overlapped by a minimum of one and a half corrugations. For aesthetic purposes it is recommended that the support spacings comply with the table below. When installing CGI Mini, extra care must be paid to ensure a uniform and even finish is achieved.

When installing on a wall, the sheets may be placed with the corrugations running vertically, horizontally, or at an angle. Fasteners should be spaced in accordance with the maximum spans found in the maximum spans table and the fixing recommendations. The sheet should be fixed to all battens and studs that make contact with it, to prevent any noise created when the sheets flex from pressure changes in the building. CGI Mini is best installed using ripple self drilling screws. These screws have a small head, which have been specifically designed to suit this product, and types to suit both timber and steel are available.

To install CGI Mini work out how many sheets are required to cover the area, ensuring that the sheets are overlapped with equal spacings. Begin fixing the sheet at the centre of one edge and work out toward the other end of the sheet. Place each row of fasteners parallel with the first row. If the sheet is 3000mm long or over, be careful to ensure the sheet remains straight along its top and bottom edge. When installing the screws, do not flatten the corrugations through excessive force, as this will make the sheet wider, and therefore effect your measurements. End laps are not recommended for aesthetics, but they are possible if required. CGI Mini may be spring curved to a radius as low as 2000mm. However, it is recommended that the support spacings be reduced to the equivalent of single spans for radii of 6000mm or less.

CGI Mini Fastener Selection
Application	Support	Type of Fastener	Fastener Size
External	Steel	Ripple self drilling and tapping screw	10x20 screw
	Timber		10x30 screw
Internal or Side-lap	Steel	Ripple self drilling and tapping screw or sealed aluminium blind rivet	10x20 screw or 3.2 rivet
	Timber		10x30 screw or 3.2 rivet

The minimum allowable steel support thickness is 0.75mm BMT

CGI Mini Fixing and Laying Directions - Non-Cyclonic Areas
Fixing to Steel ripple self drilling and tapping screw
Fixing to Timber Type 17 ripple self drilling and tapping screw
Laying Procedure

Maintenance Requirements

The performance of CGI Mini over time is dependant on the correct application of the product as outlined in the CGI Mini brochure, on correct product selection, and on maintenance suitable for the environment in which the product is to perform. It is important that screws have the same life expectancy as the CGI Mini sheeting.

The use of CGI Mini should comply with the specifications set out in SAA HB39-1997 “Installations code for metal roofing and wall cladding” published by Standards Australia, and users should first acquaint themselves with this publication.