Minimum Pitch For Tiled Roof Building Regulations

Mass nominal mass per tile.

Minimum pitch for tiled roof building regulations.

For projects outside the scope of these guidelines your. Metal roof shingles require a minimum roof pitch of 3 12 or greater. The following tableprovides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Shallow pitches are generally cheaper to construct with savings in both timber and tiling.

Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. These linings are applied starting at and parallel to the eaves in 36 inch wide strips with a 19 inch overlap for successive sheets. The minimum roof slope allowed by code for any type of roofis in 12 applicable only to coal tar pitch roof systems. Set out nominal batten spacing.

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. 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. Entailed in this document only relate to monier tiled roofs of buildings that are intended for domestic commercial or light industrial purposes for wind classifications n1 n4 and c1 c3 inclusive with a roof pitch of 12 degrees or greater depending on profile. Minimum roof pitch15 with sarking and 20 without sarking.

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. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment. The irc recommends a minimum pitch of 2 5 12 for these materials. 337mm min 362mm max it is good tiling practice to check the gauge of all kiln fired clay roof tiles at the site.

Due to the fact that there are many roofing styles and different kinds of roofing materials there is no universal minimum roof pitch. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.