Minimum Roof Pitch For Plain Concrete Tiles

Below 90 at 90 tile thickness.

Minimum roof pitch for plain concrete tiles.

The international residential code irc specifies a minimum 4 12 pitch 4 inches of vertical rise for every 12 inches of horizontal run for a clay or concrete tile roof except that a pitch as low as 2 1 2 12 is allowed when two layers of underlayment are applied. Interlocking concrete and clay tiles. 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. They have also been certified as excellent for bes 6001 which means that projects using these products can now achieve extra credits under breeam and hqm as well as an a rating in bre green guide.

As a general rule 15 is the minimum pitch for concrete tiles which has decreased from the original recommended level of 20. The irc recommends a minimum pitch of 2 5 12 for these materials. They can also be used on low pitched roofs such as the sandtoft 20 20 tile which is a highly popular clay option that can be installed on pitches of 15. Concrete is long lasting with a minimum lifespan of 50 years depending on climate.

Below 90 at 90 maximum headlap. Ratios from that minimum up to 4 12 which are considered low pitch require double underlayment. 90 subject to fixing specification. Our concrete interlocking roof tiles and concrete plain tiles are easy to lay thus ensuring you can keep your installation costs down.

Plain tile technical data size. It has long been enshrined in our british standards for roofing that the minimum roof pitch for plain tiles is 35 degrees or 40 degrees for handmade clay tiles that do not fall into the geometric tolerances set manufacturing standards. 268 x 165 mm minimum pitch. Additionally there are some concrete tiles available that can be laid as low as 10 although these are not too commonly used.

165 mm covering capacity net 60 tiles m. The limit for plain concrete tiles remains at the same level as you can see with the sandtoft plain concrete tile which is set at a minimum of 35. 88 mm maximum gauge. The benefits of interlocking tiles allow for faster installation and lower purchasing and labour costs.

88 mm minimum gauge. 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. Linear cover of 1 tile. 13 mm hanging length.