Minimum Pitch For Tiled Roof Building Regulations

Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Minimum pitch for tiled roof building regulations.

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. 3 1kg mass per sq m. Factors affecting minimum roof pitch.

Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment. The minimum roof slope allowed by code for any type of roofis in 12 applicable only to coal tar pitch roof systems. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. 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. Minimum roof pitch15 with sarking and 20 without sarking. Metal roof shingles require a minimum roof pitch of 3 12 or greater. 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.

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. For projects outside the scope of these guidelines your. Mass nominal mass per tile. Due to the fact that there are many roofing styles and different kinds of roofing materials there is no universal minimum roof pitch.

The irc recommends a minimum pitch of 2 5 12 for these materials. Shallow pitches are generally cheaper to construct with savings in both timber and tiling.