Minimum Pitch For Tiled Roof Building Regulations

Due to the fact that there are many roofing styles and different kinds of roofing materials there is no universal minimum roof pitch.

Minimum pitch for tiled roof building regulations.

The irc recommends a minimum pitch of 2 5 12 for these materials. The minimum roof slope allowed by code for any type of roofis in 12 applicable only to coal tar pitch roof systems. 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. Mass nominal mass per tile.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. Factors affecting minimum roof pitch. Minimum roof pitch15 with sarking and 20 without sarking. 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.

Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. 337mm min 362mm max it is good tiling practice to check the gauge of all kiln fired clay roof tiles at the site. For projects outside the scope of these guidelines your.

Set out nominal batten spacing. Modern tiles permit shallow pitch but some of the older traditional coverings such as hand made clay tiles require quite steep slopes to ensure rain does not penetrate the roof covering. These linings are applied starting at and parallel to the eaves in 36 inch wide strips with a 19 inch overlap for successive sheets. 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.

3 1kg mass per sq m. Shallow pitches are generally cheaper to construct with savings in both timber and tiling.