2005-2006 steep-slope roofing materials guide - National Roofing ...

Information About Section 3: Clay and Concrete Tile
General Information
Section 3: Clay and Concrete Tile in NRCA=s
2005-2006 Steep-slope Roofing Materials
Guide provides a comprehensive listing of clay
and concrete tile products commonly used in
steep-slope roofing.
Clay tile is produced by baking molded clay into
tile. The density of the clay is determined by
the length of time and temperature at which it is
heated. Tiles may be glazed and may also
have surface texture treatment. As a result,
there are a wide variety of tile profiles, styles,
finishes and colors available. In addition, each
tile may have separate field, ridge, hip, gable
and terminal tiles of various shapes.
Installation methods depend upon the nature of
the tile being installed, e.g., whether it is twopiece,
one-piece, interlocking, flat, etc.
The terms used to refer to tile types are not
necessarily consistent among manufacturers.
Sometimes, a proprietary name is used instead
of a generic term that might be more descriptive
of the tile product.
Concrete tiles are made of portland cement,
sand and water in varying proportions. The
material is mixed and extruded on molds under
high pressure. The exposed surface of the tile
may be finished with cementitious material
colored with synthetic oxide additives. The tiles
are then cured to reach the required strength.
They generally have lugs on the underside for
anchoring to batten strips. There are additional
waterlocks, or interlocking ribs, on the
longitudinal edge that are for impeding
movement and preventing water infiltration.
Similar to clay tile, there are a wide variety of
profiles, styles, finishes and colors available.
Color may be added to the surface of the tile or
dispersed throughout, termed Acolor-through.”
Special texture may be added in surface
treatment. In addition, each tile type may have
separate field, ridge, hip, gable and terminal
tiles that are of various shapes.
Concrete tile types can be associated with the
roof component that the tile is simulating―
whether it be clay tile or shingles, shakes or
slate.
2005-2006 Steep-slope Roofing Materials Guide 127
Specific Information Included in the Guide
Information about clay tile and concrete tile roof
products is presented in the guide in two parts:
Part 1 ― General Information and Part 2 ―
Technical Data.
For clay tile, specific listing information is as
follows:
1. Company name
2. Product name
3. Tile type
4. Tile description
5. Accessory tiles available
6. Dimensions and coverage
7. Slope/underlayment recommendations
8. Recommended decks and fastening
requirements
9. Year product first sold
10. Number of squares installed
11. Distribution
12. Manufacturer’s plant locations
13. Sales and technical contact information
In Part 2 ― Technical Data, specific listing
information is as follows:
1. Company name
2. Product name
3. Complies with (ASTM Standard)
4. Fire/wind/impact resistance
5. Code acceptance
Reporting of technical information in Item 3 is
based on American Society for Testing and
Materials (ASTM) Standard C1167, titled
AStandard Specification for Clay Roof Tiles.”
For concrete tile, specific listing information is
as follows:
1. Company name
2. Product name
3. Tile type
4. Tile description
5. Accessory tiles available
6. Dimensions and coverage
7. Slope/underlayment recommendations
8. Recommended decks and fastening
requirements
9. Year product first sold
10. Number of squares installed
11. Distribution