Colourbond guttering on treated pine beam.

I am installing a colourbond gutter at the end of a verandah roof. What type of screws should I use for the gutter clips. I want a flat head screw, but not sure what type of screw to use. Maybe it doesn;t matter so much with gutter clips?

Gal screw - good for treated pine but not with colourbond
Zinc screw - good with colourbond not good with treated pine
Stainless steal - good with treated pine, not good with colourbond
dark green treated pine screw - good with treated pine, bot sure about colourbond and hard to find in a flat head.



Confused :doh:


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