[DylanVK]

If you're masking off vinyl and it won't stick its likely b/c the existing dressing on the surface is still doing its job.

A trick you can use is to dress all the exterior trim FIRST with your preferred (water based) dressing and skip the tape. Given you have to be a bit more careful, but in the event you do get a little polish/wax residue onto a trim part it should wipe away relatively cleanly as the dressing will prevent it from sticking, like it does with the tape.

Worst case you have to remove the residues and then redress after the paint work is done.