Small hole in fibre cement slate - what's it for?

[Casterbridge]

... you know the one at the bottom of the slate?

The middle two are for banging the nails into the battens, but what's that small hole in the middle at the bottomn of the slate for???

 

[datarebal]

its for the cdr (copper disc rivet) very important.

 

[Casterbridge]

Thanks - did a search following your response and found this useful.

http://www.roofconsult.co.uk/articles/tiling/tips61.htm

Cheers for your quick reply mate.

 

[datarebal]

yep thats the little buggers