1507.3.7 Attachment.
BC § 1507.3.7
Clay and concrete roof tiles shall be fastened in accordance with Table 1507.3.7. Table 1507.3.7Clay and Concrete Tile Attachment a, b, c General – Clay or Concrete Roof TileMaximum Nominal Design Wind Speed, Vasd f (mph)Mean roof height (feet) Roof slope ≤ 3:12 Roof slope 3:12 and over 850 - 60One fastener per tile. Flat tile without vertical laps, two fasteners per tile.Two fasteners per tile. Only one fastener on slopes of 7:12 and less for tiles with installed weight exceeding 7.5 lbs./sq. ft. having a width no greater than 16 inches.100 0 - 40 100 > 40 - 60 The head of all tiles shall be nailed. The nose of all eave tiles shall be fastened with approved clips. All rake tiles shall be nailed with two nails. The nose of all ridge, hip and rake tiles shall be set in a bead of roofer's mastic.110 0 - 60The fastening system shall resist the wind forces in Section 1609.5.3.120 0 - 60The fastening system shall resist the wind forces in Section 1609.5.3.1300 - 60The fastening system shall resist the wind forces in Section 1609.5.3.All > 60 The fastening system shall resist the wind forces in Section 1609.5.3.Interlocking Clay or Concrete Roof Tile with Projecting Anchor Lugs d, e(Installations on spaced/solid sheathing with battens or spaced sheathing) Maximum Nominal Design Wind Speed, Vasd f (mph)Mean roof height (feet) Roof slope < 5:12 Roof slope 5:12 < 12:12 Roof slope 12:12 and over 850 - 60Fasteners are not required. Tiles with installed weight less than 9 lbs./sq. ft. require a minimum of one fastener per tile.One fastener per tile every other row. All perimeter tiles require one fastener. Tiles with installed weight less than 9 lbs./sq. ft. require a minimum of one fastener per tile.One fastener required for every tile. Tiles with installed weight less than 9 lbs./sq. ft. require a minimum of one fastener per tile.1000 - 40100> 40 - 60The head of all tiles shall be nailed. The nose of all eave tiles shall be fastened with approved clips. All rake tiles shall be nailed with two nails The nose of all ridge, hip and rake tiles shall be set in a bead of roofers' mastic.1100 - 60The fastening system shall resist the wind forces in 1609.5.3.1200 - 60The fastening system shall resist the wind forces in 1609.5.3.1300 - 60The fastening system shall resist the wind forces in 1609.5.3.All > 60The fastening system shall resist the wind forces in 1609.5.3.Interlocking Clay or Concrete Roof Tile with Projecting Anchor Lugs(Installations on solid sheathing without battens) Maximum Nominal Design Wind Speed, Vasd f (mph)Mean roof height (feet) All roof slopes 85 0 - 60One fastener per tile.1000 - 40One fastener per tile.100 > 40 - 60The head of all tiles shall be nailed. The nose of all eave tiles shall be fastened with approved clips. All rake tiles shall be nailed with two nails The nose of all ridge, hip and rake tiles shall be set in a bead of roofers' mastic.1100 - 60The fastening system shall resist the wind forces in 1609.5.3.1200 - 60The fastening system shall resist the wind forces in 1609.5.3.130 0 - 60The fastening system shall resist the wind forces in 1609.5.3.All > 60 The fastening system shall resist the wind forces in 1609.5.3. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound per square foot = 4.882kg/m 2 . a. Minimum fastener size. Corrosion-resistant nails not less than No. 11 gage with 5/16-inch head. Fasteners shall be long enough to penetrate into the sheathing 3/4 inch or through the thickness of the sheathing, whichever is less. Attaching wire for clay and concrete tile shall not be smaller than 0.083 inch. b. Snow areas. A minimum of two fasteners per tile are required or battens and one fastener. c. Roof slopes greater than 24:12. The nose of all tiles shall be securely fastened. d. Horizontal battens. Battens shall be not less than 1 inch by 2 inch nominal. Provisions shall be made for drainage by a minimum of 1/8-inch riser at each nail or by 4-foot-long battens with at least a 1/2-inch separation between battens. Horizontal battens are required for slopes over 7:12. e. Perimeter fastening areas include three tile courses but not less than 36 inches from either side of hips or ridges and edges of eaves and gable rakes. f. V asd shall be determined in accordance with Section 1609.3.1.
