Guardian Impax Security Boards
Impax Security Boards "Pressure Laminated":
Fixing Instructions:

Double Sided Impax Board:

Where the wall to be sheeted is an external wall of the building, the sheets must be manufactured from a fibre cement sheet bonded to each side to a sheet of Zincanneal of the specified thickness. The sheet will be pressure laminated in a factory environment strictly as per manufacturer's quality controlled process. The purpose of double-sided sheets in this application is to provide a stable panel, which will not distort under varying ambient surface temperatures on either side of the panel.

Single Sided Impax Board:

For internal wall and ceiling linings, Impax Board manufactured from a single sheet of fibre cement bonded to a sheet of Zincanneal of specified thickness, may be fixed direct to timber or metal framing. In the case of an existing wall or ceiling, sheeted with either fibre cement or plasterboard, single sided Impax Board may be fixed directly over the existing sheeting as detailed below, and providing the existing framing structure will support the additional weight of the new layer.

Framing:

Recommended framing components are timber and or 1.2mm thick galvanised metal, however, variation to this requirement may be granted following Engineer approved framing design based on application and system weights per square metre. Wall frame spacing shall be at 600mm maximum centres, ceiling frame spacing at 400mm maximum centres, with additional framing required behind all sheet joints.

Fixings:

For timber:- 10 x 30mm CSK head Type 17 screws.
For Steel:- 10 x 30mm CSK head TEK or Drill Point screws.

Fixing Spacing:

All sheets are to be fixed at 200mm centres around sheet perimeter, with minimum 15mm edge clearance, and at 400mm centres through the field of the sheet. All sheets are to be pre-drilled with a pilot hole 1.0mm oversize of the nominated screw.

Treatment of Screw Heads:

All screws are to be countersunk and filled with Ciba Geigy 125 Araldite or similar and sanded flush.

Cutting:

It is recommended that as much cutting as possible be carried out with a diamond blade wet cut saw bench in a factory environment. When sheets are site cut, the edge of the cut Zincanneal be painted with a metal primer.

Pre-drilled and cut to size sheets can be supplied ex our factory by arrangement.

Site Storage:

All material delivered to site is to be stored out of the weather in a dry and level location until installation is completed.

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