Clay Tile Roof Pitch

What are the minimum pitches for clay or concrete tiles.

Clay tile roof pitch.

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. This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. Instead flashing for clay tile must be formed from heavy gauge copper or stainless steel. Clay roofing tile installation articles.

And our brand new mendip 12 5 can be used at an even lower pitch of 12 5 restrictions on rafter length may apply further information all our low pitch options come complete with matching fittings and accessories for ease of installation and additional protection. Or see clay tile roof slope deck underlay faqs questions answers posted originally on this page. Clay tile roofing home. Where the minimum pitch for clay pantiles used to be 30 tiles like the redland cathedral pantile can be pitched as low as 22 5.

Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. Our melodie interlocking clay pantile can be used in roof pitches as low as a 12 5 our wessex and mendip concrete roof tiles can be used down to a minimum 15 pitch. Aluminum or galvanized sheet metal sufficient for the life of an average asphalt roof would be the weakest link in a clay tile roof. They can also be used on low pitched roofs such as the sandtoft 20 20 tile which is a highly popular clay option that can be installed on pitches of 15.

The irc recommends a minimum pitch of 2 5 12 for these materials. Self adhering underlayment that sticks to the roof deck and prevents leakage can be a highly desirable option for tile roofs. A clay tile roof is considered to be a water shedding system so windblown rain is expected to get in under the tiles and must be accounted for during the installation. Anything lower than this angle is rare and although there are specific products that can go lower 15 is the most common minimum angle for clay tiles.

Continue reading at clay tile roof specifications or select a topic from the closely related articles below or see the complete article index. Likewise the nails used to attach clay tiles to the decking should be corrosion resistant copper or stainless steel. Or see these. Clay and concrete tile minimum roof slope roof pitch r905 3 2.

For many years 20 was recommended as the minimum pitch for clay tiles but this has decreased in the modern era down to 15.