Mounting A Magnetic Contact Switch On A Curved UPVC Frame Ask questions and find answers to many subjects relating to electrics and electrical work

[heathman]

Hello,

I need to mount a flat, magnetic alarm contact to a curved UPVC window frame. I wondered if anybody has a solution for mounting it please?

I thought maybe cutting away a section of the curved part of the frame with the hope there's a flat surface underneath to mount the switch but have no idea what's inside a typical window frame. Another idea was to use some Milliput to form a base for it but could look shabby.

Any other ideas please?

Thank you very much.

[Mr White]

If you mount it on the curve how long before it gets knocked off? (Rhetorical question)
Mount it on the flat surface and use a bigger magnet or double the magnets.
Do test it with your meter before you fix it with screws

[heathman]

Many thanks for the reply.

I think the flat surface will be beyond the 20mm range specified but no harm in trying I suppose.

[Mr White]

I would suggest you read my post again.

Above is a "uPVC" door with magnet and contact, they are both overesized to overcome the gap. (Magnets doubled up also work, if you do it right.)