Tile Roof Slope Minimum

It is uncommon to find a roof below 15 but for those very low pitch applications there are interlocking clay pantiles available suitable for use down to 12 5.

Tile roof slope minimum.

Sunday july 1 2018 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. However on extremely steep roofs above 19 12 or on vertical applications wind currents may cause tiles to rattle. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Roofers must turn to local or state building codes when installing tiled roofs if they want their.

Now lets get into the minimum roof slope requirements based on the. In general there is no maximum slope for tile roofs. What is the minimum pitch for a tiled roof. On slopes less than 3 1 2 12 roofing tile is considered decorative only.

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. Minimum roof slope roof pitch r905 2 2 asphalt shingles can only be installed on roof slopes of. What is the minimum slope for a clay or concrete tile roof. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.