"Steve Walker" wrote in message
...
Hi -

My old mum is delighted with her new upvc porch, but wants a security
chain on the outer door.

I can think of various methods involving self-tappers, toggle bolts etc,
but don't feel wholly confident that they'd hold properly. Is there a
'proper' way to fix security devices to plastic doors & frames?

Is it a high strength security door with a metal core?
If it is then self tappers work quite well.

If not then glue and a large plate is probably best.