SEC. 91.1507. REQUIREMENTS FOR ROOF COVERINGS.

(Amended by Ord. No. 187,719, Eff. 1/23/23.)

Section 1507 of the CBC is adopted by reference, except Table 1507.3.7 of the CBC is not adopted and, in lieu, Los Angeles Municipal Code Table 1507.3.7 is added.

TABLE 1507.3.7 CLAY AND CONCRETE TILE ATTACHMENT a, b, c (Amended by Ord. No. 181,758, Eff. 8/8/11.)

GENERAL – CLAY OR CONCRETE ROOF TILE Maximum Mean basic roof Roof wind height slope up Roof slope 3:12 and over speed (feet) to <3:12 (mph) 85 0-60 Two fasteners Two fasteners per tile. 100 0-40 per tile.

           The head of all tiles shall be nailed. The nose of all eave

100 >40-60 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 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 120 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 130 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. All >60 The fastening system shall resist the wind forces in CBC Section 1609.5.3.

INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGS d, e (Installations on solid sheathing with battens) Maximum basic Mean roof Roof slope Roof slope Roof slope wind speed height (feet) up to < 5:12 5:12 < 12:12 12:12 and over (mph) 85 0-60 One fastener One fastener per required for tile. Tiles with every tile. installed weight Tiles with Minimum slope is less than 9 installed weight 4:12. One lbs./sq. ft. less than 9 100 0 - 40 fastener per require a lbs./sq. ft. tile. minimum of one require a fastener per minimum of one tile. fastener per tile.

lbs./sq. ft. less than 9 100 0 - 40 fastener per require a lbs./sq. ft. tile. minimum of one require a fastener per minimum of one tile. fastener per tile.

                        The head of all tiles shall be nailed. The nose of
                        all eave tiles shall be fastened with approved

100 >40-60 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 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 120 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 130 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. All >60 The fastening system shall resist the wind forces in CBC Section 1609.5.3.

INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGS (Installations on solid sheathing without battens) Maximum basic Mean roof height Minimum roof slopes 4 units vertical in 12 wind speed (feet) units horizontal Maximum slope 7 units vertical (mph) in 12 units horizontal 85 0-60 One fastener per tile. 100 0-40 One fastener per tile. The head of all tiles shall be nailed. The nose of all eave tiles shall be fastened with 100 >40-60 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 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 120 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. 130 0-60 The fastening system shall resist the wind forces in CBC Section 1609.5.3. All >60 The fastening system shall resist the wind forces in CBC Section 1609.5.3.

For SI: one inch = 25.4 mm, one foot = 304.8 mm, one mile per hour = 0.447 m/s, one pound per square foot= 4.882 kg/m2.

a Minimum fastener size. Hot dipped galvanized ring shank or other corrosion-resistant nails not less than No. 11 gage with 5/16-inch head. Fasteners shall be long enough to penetrate into the sheathing 0.75 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 and shall be copper, brass or stainless steel. 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 one-inch by two-inch nominal. Provisions shall be made for drainage by a minimum of 1/8-inch riser at each nail or by four-foot-long battens with at least a 0.5-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.