Which Nails

[Codlips]

I'm looking for a bit of advice on which nails would be most suitable to attach some 14.5mm redwood cladding boards (pic) to the 3x2 in a summerhouse. Also which screws would be best to use for attaching 6mm external ply wood to the ceilings.
Many thanks

 

[blup]

Lost head nails probably best, to avoid showing on the surface. Leave space for expansion of the tongue and groove.

Blup

 

[big-all]

that looks like finished size at 8x88mm coverage clading
perfect for 25mm 18 gauge pins at 45degrees in top off the tounge
somthing like this
https://www.toolstation.com/bauker-18-gauge-straight-nailer-stapler/p61084?searchstr=18 gauge

 

[Codlips]

Hi big all, the finish size is 14.5 x 119mm shaved down from 19x125mm, and I don't own a nail gun unfortunately. I could possibly hire or borrow one as I have around 200m to fit so world make life easier, would you recommend using the same gauge but 32mm nails for eg?
Cheers.

 

[big-all]

ahh ok those pins no good for ex 5" cladding