That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.
Roof tile thickness.
Concrete tile roofs are more economical with costs of 400 to 450 per square.
Standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses.
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A flatter roof with rafters farther apart may need a thickness of up to inch.
Although most concrete roof tiles are manufactured with an integral pigment that colors the entire thickness of the tile the color of concrete tiles will fade over time.
Underlayments play a key role in tile roofing since most tile roofs are not completely waterproof.
Loads will vary with the.
Concrete roof tiles are made from mixing portland cement sand water then placed in a mold to get the desired shape and thickness.
Keep in mind that the load of the roof still plays a role in the plywood thickness.
An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof.
A clay tile roof system can cost two to three times as much as an asphalt roofing system.
Cheaper felt paper without an astm rating widely sold in home centers is much thinner and should not be used.
Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood.
This is offset though by the long life a tile roof will enjoy.
An average clay tile roof costs between 675 to 1400 per square 100 sf of roof area.
Because of the long service life of tile a long lasting underlayment should be used as well.
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.
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Similar to clay tile roofing a concrete tile roof holds several of the same advantages over more common roof types.
At a minimum use a type ii no.
43 felt lapped 2 inches on horizontal joints and 6 inches at end laps.
The industry standard minimum underlayment for a tile roof with a slope of 4 12 or greater is a single layer of astm rated 30 felt paper.
Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.