Sturctural Support For A Clay Roof

So all things being equal if you were able to use a rafter table for dead loads of 10 pounds per square foot for the asphalt roof you should be able to use a rafter table for dead loads of 15 pounds per square foot for the tile roof.

Sturctural support for a clay roof.

Your roof structure must be able to handle the weight of a tile roof which may be as much as 850 pounds per square for clay tile and 950 pounds per square for concrete tile. These objects are made from commonly occurring natural materials which are mixed with water formed into the desired shape and fired in a kiln in order to give the clay mixture a permanent bond. Typical structural clay products are building brick paving brick terra cotta facing tile roofing tile and drainage pipe. Clay tile roof battens are nailed at minimum 24 inches on center with spaces for drainage every 48 inches.

Battens for use on clay tile roofs should be made from pressure treated lumber except in very dry climates. Clay tile roofing is commonly applied to steeper pitches. An asphalt roof by comparison weighs only around 225 to 325 pounds per square. Lay out battens to provide equal courses with a minimum 3 inch head lap unless the tile profile is designed for a specific head lap.

Clay tiles are typically selected only for roofs that have a pitch greater than 4 inches. This is not a diy project. Roof frame support reinforcement requirements since tile is a heavy roofing material concrete is lighter than clay 600 to 1 200 pounds per square as opposed to 1 000 to 1 500 pounds per square the structural support of the building must be taken into account. A clay tile roof is a weighty choice like concrete tile a clay tile roof is a very heavy roofing material more than three times the weight of a comparable asphalt composite shingle roof.

The clay tiles you are using weigh about 8 pounds per square foot adding 5 pounds to the design dead load. Still it is important to seek the advice of a structural engineer for certainty. That means that the framing of your roof supports must be sturdy enough to carry all that extra weight.