"The Natural Philosopher" wrote in message ...

Thanks mate. I am surprised that pantiles are in the 22.5 degree bracket
tho.

The info comes from the Redland Red Book. Remember this is Redland's
interlocking single lap version, not traditional clay pantiles. I don't know
for certain what pitch these can go down to but definitely shallower than plain
tiles.
http://www.spab.org.uk/publications_Q&A_pantiles.html