Marley mendip tile 123.
Slating a low pitch roof.
As low as 2 10 1 75.
What roof pitch do i need for what slate size.
When slating with a shallow pitch a wide slate is highly recommended for maximum side lap or lateral lap side.
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 reduced to 17 5 generally and under some circumstances as low as 15 in areas considered to be unexposed.
The slates are still installed in a double lapped pattern so there is no discernible difference in appearance on the roof.
The best tiles and slates to cover low pitched roofs.
Type of slate being used.
For low pitch slate roofs you should specify siga 65slates from our commercial range sized at 500x300mm and supplied unholed for hook fixing.
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.
As low as 1 38 1 15.
Marley wessex tile 106.
Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.
As low as 1 20 1 00.
Wood shakes require a minimum roof pitch of 3 12 or greater.
Size of the slate.
Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.
Siga 65 slate roofs installed to the correct specification would attract the usual 30 year warranty.
Built up roofs require a minimum roof pitch of 1 4 12 or greater.
Size of the lap.
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Easy slate vastly improves the performance of the slates enabling roof pitches as low as 12 degrees.
Wood shingles require a minimum roof pitch of 3 12 or greater.