Slate Tile Roof Pitch

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.

Slate tile roof pitch.

Higher exposure or different sized slates necessitated a greater roof pitch of 22 5 or more. Additionally if the climate can cause backups of water as ice under the eaves the tile requires at least two layers of underlayment cemented together. Roof pitch is a term used in the roofing industry to describe the angle slope of a roofing structure. Conventional low pitch slate roofs are recommended down to a minimum of 20 in areas of sheltered or moderate exposure providing a 500x300mm slate is used and a headlap of 115mm.

The pitch of a roof is determined by 2 numbers. 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. In areas with high winds the underlayment must be attached with corrosion resistant fasteners according to manufacturer s instructions. Most commonly a roof pitch will be from 0 flat to 12 45.

The rise and the length. Slate tile requires a pitch of 4 12 or greater. For tile shingle slate and metal roofing.