| This article describes the procedure for fitting aluminium window foil to glazed windows.
Introduction
Aluminium window foil is an economical method of protecting glazed windows. It will protect both the breakage and/or removal of the glass, and also provides a visible deterrent.
The foil can be found under the Breakglass category.
The self-adhesive aluminium foil is supplied in 50m x 9mm wide rolls and is connected to the alarm circuit using foil blocks.
Coverage
The pattern of the foil on the window must form one continuous loop. If the foil crosses itself then the part outside the crossed point is not part of the circuit, patterns can range from a simple loop around the perimeter of the window to more complex patterns as shown below.
Installation
Once the pattern has been decided, the foil can be applied.
- Thoroughly clean the glass.
- Position the foil terminal block on the edge of the glass or the frame - the blocks we supply are doubles but can be split into singles as required.
- Starting at one of the terminal connections, stick the aluminium foil to the glass - leave enough to fit under the terminal block - lay the foil onto the glass in a straight line until the first corner of your desired pattern is reached.
- At the corner, fold the aluminium foil across itself to form the right-angle corner - do NOT break the foil.
- Continue to the next corner and repeat until the pattern is complete and you have returned to the foil block.
- Carefully firm the applied foil to the glass.
- Fit the ends of the foil under the terminals on the terminal block.
- Test the circuit - there should be no (extremely small) resistance in the circuit.
Post-Installation
The completed circuit can be connected into either an alarm zone circuit or the global tamper circuit.
The aluminium foil is rather delicate and can easily be scratched off the window. In order to protect the foil it SHOULD be protected with a coat of good quality clear varnish; thus.
- Using masking tape, mask an area about 10mm each side of the foil.
- Using a good quality clear varnish, paint over the foil and surrounding glass within the masked area.
- Allow the varnish to dry and remove the masking tape.
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