How best to mount an alarm contact to a uPVC door

[Garry Pettet]

I am trying to install a home burglar alarm and I need to fit some door/window contacts to the front/back doors and a couple of windows. All are uPVC. Is there anything special I need to door to screw the contacts to the frames? Do I need Rawlplugs or self-tapping screws for instance? The instruction manual is very brief and I'm not sure if the included screws are suitable.

Here's a picture of the included screws:



Thanks,

 

[maltaron]

Drill a pilot hole and drive the screws in. They will hold in upvc with no problem.

 

[joe-90]

2.5mm hole is good. Drill one hole first, then fit contact so you get the right spacing for the next one.

 

[Garry Pettet]

Thanks guys. Worked a treat.