Which nails for new slate roof?

[Sud1987]

Hi guys, ive been searching around for the right nails for new slate roof but cannot seem to find the right nail for a 600x300 slate roof.

What type of nail do I need, does it have to be copper or is corrosion resistant galvanised good enough?

Also how much should the slates overlap?

It will be for a small single storey rear extension roof. only 10sqmeters. In central Birmingham. the roof will be about 20 degree angle pitch.

 

[catlad]

The place were you are going to buy your slates should be able to sell you some 30mm copper nails 1kg should be enough.