Minimum Pitch For Man Made Slate Roof

Size of the lap.

Minimum pitch for man made slate roof.

Improvements in the products aesthetics maintain its regular use. 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. The general recommendation for the minimum pitch for natural slate is 25.

Higher exposure or different sized slates necessitated a greater roof pitch of 22 5 or more. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. Size of the slate. There are some manufacturers that can go slightly lower such as the siga 56m natural slate which can go down to 20 in some instances if used with slate hook systems.

The profile is the shape taken by the sheets when you bend them to form panels. Originally produced in asbestos cement and now for many years in fibre cement these cost effective slates are regularly used in re roofing for all types of buildings. You consider some alternative solutions. 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.

A couple of likely slate suppliers are consulted and they confirm that they are happy to supply 600x300mm slates for a minimum roof pitch of 20 degrees assuming a minimum lap of 125mm. Guidance on these components can be found in british standard bs 5534 2014 the code of practice for slating and tiling. Generally a slate roof is not installed on a pitch less than 4 12. Although bs 5534 recommends a minimum pitch of 20 ssq has developed a successful slate roofing system that allows the roof s pitch to be.

But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. It is agreed that the roof pitch should be a minimum of 20 degrees preferably a bit more. Type of slate being used. The minimum slope of a roof depends on the roof s profile.

While it s a more costly option due to the processes and materials that go into its manufacturing this versatile slate can be used on pitched roofs at 15. 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 redland cambrian grey slate is a good example of man made slate as it is composed of 60 of natural slate the slate also comes with interlocking ability. Express the slope of a metal roof by a ratio which indicates the pitch of the roof.