if you mean the tiles look slightly bent,some hand made are,they need to be fixed on to lathe wood, with nail fixing,this will stop nslipping out etc, hope this helps
http://www.fixroof.co.uk/responseform.asp
07904664691
DAVE, January 2008
My metal porch roof is leaking. It seems it may be due to loose bolts. How can I do my own repair? We are going to have to tear out the ceiling as it has been completely ruined by water damage.
S. Al-Haddad, August 2007
Sorry missed out incase you don't know noggins are pieces of wood same or slightly smaller than the rafter slip fairly tight between the rafter and side nail them.
Rob, July 2007
I take it you mean the rafter is sagging slightly and not twisting. If twisting fix some noggins between the offending rafter and the next to help it stop twisting further.
Can't do much about sagging.
I put tiles on bent [sagging] rafters as the tiles hook over the battens not the rafter. If its the batten thats bent cut it out and replace it.
Can't see so thats all I can offer.
