Plain Roof Tiles Minimum Pitch

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.

Plain roof tiles minimum pitch.

Clay pantiles 30 degrees. 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. 268 x 165 mm minimum pitch. 73 8kg m 0 72 kn m at 100mm gauge roof.

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. 65 mm 35 mm. 165 mm covering capacity net 60 tiles m. 100mm roof 115mm vertical cover width.

Florida building code fbc specifies that clay and concrete tile be installed to the standards in the florida roofing and sheet metal association s frsa concrete and clay roof tile installation manual. In most instances 35 will be the minimum pitch for plain concrete tiles which is another reason why the material is the preferred choice for those who use them regularly. To calculate roof pitch take the lowest point of the roof and measure the amount of rise for every 12 inches of horizontal movement toward the highest point. 267mm x 165mm.

Guidelines for roof sections falling below a 35 pitch. For example a roof that rises 3 inches for every 12 inches has a pitch of 3 12. 60 tiles m at 100mm gauge roof 53 tiles m at 115mm gauge vertical weight of tiling. As a general rule tiles and slates will perform down to the pitches outlined below.

90 subject to fixing specification. Plain tile technical data size. 13 mm hanging length. Interlocking concrete and clay tiles 22 5 degrees.

Below 90 at 90 maximum headlap. Plain tiles 35 degrees. Previously it was accepted that 35 was the lowest recommended pitch for both concrete and clay variants of the tile. 88 mm minimum gauge.

On some developments design limitations can arise on comparatively small areas of the roof which restrict the available roof pitch to below 35 which is the minimum pitch recommended for all plain tiles in bs en 5534. Below 90 at 90 tile thickness. It is this long experience in use that tells us what the minimum roof pitch should be and how to achieve the many intricate and interesting roof designs that suit plain tiles. 65mm roof 37 5mm vertical maximum gauge.

Clay single camber plain tiles can pitch down to 30 manufacturer dependant although the vast majority available have a limit of 35. Sunday july 1 2018. 88 mm maximum gauge. With the introduction of machine made clay tiles this has now dropped slightly to 30 similar to the marley hawkins single camber tile.

Linear cover of 1 tile. Natural slate 25 degrees. 100 mm 115 mm.