In message , John Kelly
writes
Anyone any advice on just how low you can go with roof tiles?

Depends on the tiles. I know that many interlocking tiles can go as low
as 17.5 degrees. Stonewold is one that comes to mind.

Are you sure about the 30 degree bit most tiles can cover at least 22.5
degrees.

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Danny Burns
www.buildsure.co.uk