ARWadworth wrote:

My parents have had a front door changed along with some other work.
This now means the surface mount alarm door contact will not clear the
gap above the door. I removed the magnet from the plastic case and stuck
it to the top of the door with Sticks Like S*** to make it fit. It did
not stick.

Can someone suggest a better adhesive for sticking metal to UPVC please?
I do not want to be left with globs of old glue on the door from failed
attempts! The Sticks Like S*** came off the door easily.

Adam

PS It is the magnet out of one of these
http://www.tlc-direct.co.uk/Products/TS012.html and the reed switch
was sunk back, skimmed over and is not visible.

Being a UPVC door, I would pay a visit to your local tropical fish store
and ask them about fish tank adhesive. Industrial adhesive that will do
this job is a bit hard to find. So you don't want something that will
un-bond during the night.
Degrease both surfaces and abrade, before bonding the 2 parts together.
Or should that be, abrade, de grease and bond.
Proper vinegar smell silicone with stick to most things.

Dave