Plain Roof Tiles Minimum Pitch

As a general rule tiles and slates will perform down to the pitches outlined below.

Plain roof tiles minimum pitch.

165 mm covering capacity net 60 tiles m. Natural slate 25 degrees. With the introduction of machine made clay tiles this has now dropped slightly to 30 similar to the marley hawkins single camber tile. 60 tiles m at 100mm gauge roof 53 tiles m at 115mm gauge vertical weight of tiling.

65 mm 35 mm. 267mm x 165mm. Guidelines for roof sections falling below a 35 pitch. Sunday july 1 2018.

Below 90 at 90 maximum headlap. 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. Interlocking clay plain tiles 15 degrees. 13 mm hanging length.

Interlocking concrete and clay tiles 22 5 degrees. Clay single camber plain tiles can pitch down to 30 manufacturer dependant although the vast majority available have a limit of 35. 268 x 165 mm minimum pitch. Clay pantiles 30 degrees.

65mm roof 37 5mm vertical maximum 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. Previously it was accepted that 35 was the lowest recommended pitch for both concrete and clay variants of the tile. 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.

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. 73 8kg m 0 72 kn m at 100mm gauge roof. 100 mm 115 mm. 88 mm maximum gauge.

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. For example a roof that rises 3 inches for every 12 inches has a pitch of 3 12. 100mm roof 115mm vertical cover width. 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.

Plain tiles 35 degrees. Linear cover of 1 tile. 88 mm minimum gauge. Plain tile technical data size.

90 subject to fixing specification. Below 90 at 90 tile thickness. 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.