fixings into UPVC

[either of us]

New to this sight - signed in today. Found a question similar to ours but no answer?
We want to screw some hooks into the UPVC. This is to hang our door blinds on in our two conservatory doorways to stop flies zooming in. How do you use hooks? Do they screw in the same as if it were wood? What holds them in? Do we drill holes and raw plug? Someone please answer!

[stoneyboy]

either of us,
Drill a pilot hole and screw the hooks in.
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