"Dave" wrote in message
...


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.

That would be plain old silicon sealant (without the fungicide).
Not a very good adhesive at all but good enough for the job as would any old
silicon sealant lying around.
Mines held on by double sided tape and has been there for ~10 years.