Replacing plain concrete roof tiles...

[fixer]

Can anyone tell me how to fasten replacement roof tiles?

I have found "jenney clips" on the internet. but no luck in finding out where I can get them over the counter, or if there are any for concrete tiles. i'm also not keen on using tingles.
can anyone tell me if there's an alternative method of fixing them without having to remove the row of tiles above?

the tiles are plain concrete, 45cm square and about 1cm thick.

 

[masona]

Do these tiles not have lugs on the back that hook over the roof batten?

 

[bikerm4]

Sounds like hardrow tiles again. Knock a couple of nails through the partially formed holes, prop up the adjacent tiles and hang the nails over the lath.

 

[fixer]

no masona, nothing like that. just flat square shaped tiles.

thanks bikerm4, i'll have a look