Minimum Pitch For Slate Roof Tiles

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Minimum pitch for slate roof tiles.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Our melodie interlocking clay pantile can be used in roof pitches as low as a 12 5 our wessex and mendip concrete roof tiles can be used down to a minimum 15 pitch. Clay tiles are colorfast which means their tints improve rather than fade over time. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater.

Size of the lap. Roof pitch 40 roof area m 2 150 length of roof slope m 9 5 the headlap can be found from table 1 by reference to slate size roof pitch and exposure 65 mm. Higher exposure or different sized slates necessitated a greater roof pitch of 22 5 or more. What are the minimum pitches for clay or concrete tiles.

What is the minimum pitch for a slate roof. Guidance on these components can be found in british standard bs 5534 2014 the code of practice for slating and tiling. Pitch of the roof. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. All tiles and slates have a minimum roof pitch which is set out in order to protect the roof from water penetration. Size of the slate. And our brand new mendip 12 5 can be used at an even lower pitch of 12 5 restrictions on rafter length may apply.

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. When designing or altering the pitch of a slate roof common weather conditions should be one of the first considerations. The irc recommends a minimum pitch of 2 5 12 for these materials. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment.

The minimum pitch for each product can be found in the table below and in the product brochure or within the products pages some tiles and slates incorporate design features allowing them to be laid at a low minimum pitch. The total weight of slates on roof can be found from the formula. Metal roof shingles require a minimum roof pitch of 3 12 or greater. 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.

Sandtoft double pantile concrete tile. The recommendations shown above are based on a maximum height to eave of 12m and a maximum rafter length of 9m in moderate exposure and 6m in severe exposure. Type of slate being used. Minimum pitch for slate roof when considering the minimum pitch for a slated roof it is necessary to establish the exposure of the site the length of rafter and the height of the building.

It is generally accepted that the lower the pitch the larger the headlap should be.