Maximum Pitch For Slate Roof

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Maximum pitch for slate roof.

Tiles or slates can be used at pitches up to 90 degrees vertical provided a clip is available to securely clip the tail of the tile available for most tiles. Higher exposure or different sized slates necessitated a greater roof pitch of 22 5 or more. 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. What is the maximum roof pitch for a roof tile.

Our suggestion is not to contemplate using slates on roofs with a pitch less than 20 degrees and then only for big format slates eg 500x300mm. It is agreed that the roof pitch should be a minimum of 20 degrees preferably a bit more. The slope of a roof is often referred to as the roof s pitch. As per the nrca roofing and waterproofing manual fifth edition they recommend that roof deck slopes intended for the application of steep slope materials at 4 12 18 degrees or greater page 405.

Roof tiles and slates are very versatile products and can be used on a variety of roof pitches. 11 august 2015 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.