Minimum Slope For Clay Tile Roof

Clay tiles are colorfast which means their tints improve rather than fade over time.

Minimum slope for clay tile roof.

This minimum pitch is important if tiles are laid below the recommended minimum pitch there is an increased chance of water getting through which can damage the underlay and battens over a prolonged period. In that case the underlayment is principally cushioning the underside of the tiles and giving a bit of extra leak insurance. This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. Clay and concrete tile minimum roof slope roof pitch r905 3 2.

Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. Concrete is long lasting with a minimum lifespan of 50 years depending on climate. The irc recommends a minimum pitch of 2 5 12 for these materials. Traditionally a minimum roof pitch of 20 was recommended in bs 5534 but modern tiles and slates have now been designed for applications as low as 15.

All tiles have a minimum roof pitch which is always stated in the manufacturers technical information. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment.