Slate Tile Roof Pitch

Generally speaking 20 degrees is the lowest advisable pitch for a slate roof depending on the size of the slates and how much that the roof is exposed to moderate weather conditions.

Slate tile roof pitch.

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

Higher exposure or different sized slates necessitated a greater roof pitch of 22 5 or more. Roof pitch is a term used in the roofing industry to describe the angle slope of a roofing structure. When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side overlaps. For tile shingle slate and metal roofing.

The rise and the length. Slate tile requires a pitch of 4 12 or greater. 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.