Reisser screws

[DavidFrancis]

Perhaps naively, I used some Reisser screws to attach cladding to a shed and for some fence panels. I used them as they were advertised as having "approximately 20 times improved rust resistance than standard BZP screws".

With a few months many of the screws started to rust. And a few of the smaller screws (3 x 30mm) were so badly rusted I could hardly get them out.

Has anyone esle had similar problems?

 

[Deluks]

The problem is, standard bzp screws aren't that rust resistant in the first place. Should've used galvanised nails really, for cladding.
If you have trouble getting out a 30mm screw then you are probably using the wrong driver bit. Or your drills battery needs replacing.