Minimum Slope For Clay Tile Roof

This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units.

Minimum slope for clay tile roof.

Other clay tile roofs such as ours here on the other side of your wall in mexico depend on the clay tiles themselves to collect and shed water off of the roof. Clay and concrete tile minimum roof slope roof pitch r905 3 2. 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.

Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. Clay tiles are colorfast which means their tints improve rather than fade over time. All tiles have a minimum roof pitch which is always stated in the manufacturers technical information. The international residential code irc specifies a minimum 4 12 pitch 4 inches of vertical rise for every 12 inches of horizontal run for a clay or concrete tile roof except that a pitch as low as 2 1 2 12 is allowed when two layers of underlayment are applied.

Concrete is long lasting with a minimum lifespan of 50 years depending on climate. 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.