267mm x 165mm.
Plain roof tiles minimum pitch.
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.
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.
100 mm 115 mm.
88 mm maximum gauge.
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.
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.
Guidelines for roof sections falling below a 35 pitch.
100mm roof 115mm vertical cover width.
Below 90 at 90 maximum headlap.
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.
Clay pantiles 30 degrees.
60 tiles m at 100mm gauge roof 53 tiles m at 115mm gauge vertical weight of tiling.
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.
73 8kg m 0 72 kn m at 100mm gauge roof.
268 x 165 mm minimum pitch.
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.
With the introduction of machine made clay tiles this has now dropped slightly to 30 similar to the marley hawkins single camber tile.
For example a roof that rises 3 inches for every 12 inches has a pitch of 3 12.
165 mm covering capacity net 60 tiles m.
Previously it was accepted that 35 was the lowest recommended pitch for both concrete and clay variants of the tile.
88 mm minimum gauge.
Natural slate 25 degrees.
Interlocking clay plain tiles 15 degrees.
65 mm 35 mm.
Plain tiles 35 degrees.
Linear cover of 1 tile.
Below 90 at 90 tile thickness.
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.
13 mm hanging length.
Plain tile technical data size.
90 subject to fixing specification.
Interlocking concrete and clay tiles 22 5 degrees.
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.
As a general rule tiles and slates will perform down to the pitches outlined below.
65mm roof 37 5mm vertical maximum gauge.
