10-25-2010, 08:05 AM
Concrete and Clay Roof Tile Installation Manual for Moderate Climate Regions
The Roof Tile Institute, formerly the National Tile Roofing Manufacturers Association (NTRMA), has realized the need to establish an industry based manual that would cover the installation of concrete and clay tile as a roof assembly in the moderate climate regions of North America. The Roof Tile Institute in partnership with the Western States Roofing Contractors Association (WSRCA) assembled a task group to develop a single manual that would provide a representation of the best installation practices, industry standards, and code requirements. These recommendations have provided successful installations of roof tile which endured the test of time.
These recommendations are meant for areas with moderate climates that may experience occasional storms. In locations where the January mean temperature is 30 deg. F (-1 deg C) or less or where ice damming can occur, the RTI /WSRCA suggests reference to the Concrete and Clay Tile Roof Design Criteria Manual for Cold and Snow Regions. While generally considered the minimum standard, proper adherence to these recommendations and attention to detail and workmanship provide a functional roof in all but the most severe conditions. Local building officials should be consulted for engineering criteria or other special requirements.
This manual provides the minimum design recommendations with optional upgrades for the installation of underlayment, flashings, fastening and related measures to provide a weather resistant roofing assembly for concrete and clay tile.
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