Section 1507.1 of the Building Code is amended to read as follows:
(A) The first paragraph of Section 1507.1 is revised by adding a new second sentence to read as follows:
No wood roof covering or roof covering material containing wood or wood products, whether treated or untreated, may be installed.
EXCEPTION: Additions to Group R, Division 3 Occupancies which have existing wood roof coverings may be covered with matching materials, provided the new material qualifies as a Class A or B roof covering.
(B) Subsection 1505.5 is deleted entirety.
(C) Table 15 amended by referencing a new Footnote 1 at the table title with said footnote to read as follows:
1. No wood roof covering or roof covering material containing wood or wood products, whether treated or untreated, may be installed. See Section 1507.1 for exception.
Section 1507.3.1 of the 2019 Edition of the California Building Code is amended to read as follows:
1507.3.1 Deck requirements. Concrete and clay tile shall be installed only over solid sheating or spaced structural sheathing boards.
Exception: Spaced lumber shall be permitted in Seismic Design Categories A, B, and C.
TABLE 1507.3.7
CLAY AND CONCRETE TILE ATTACHMENTa, b, c
GENERAL - CLAY OR CONCRETE ROOF TILE | ||||
Maximum basic wind speed (mph) | Mean roof height (feet) | Roof slope up to <3:12 | Roof slope 3:12 and over | |
85 | 0 - 60 | Minimum slope: 2.5:12 Two fasteners per tile. | Two fasteners per tile. | |
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 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
120 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
130 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
All | > 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGSd, e (Installations on solid sheathing with battens) | ||||
Maximum basic wind speed (mph) | Mean roof height (feet) | Roof slope up to <5:12 | Roof slope 5:12<12:12 | Roof slope 12:12 and over |
85 | 0 - 60 | Minimum slope is 4:12 | One fastener per tile. 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. |
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 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
120 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
130 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
All | > 60 | The fastening system shall resist the wind forces in Section 1609.5.2 | ||
85 | 0 - 60 | One fastener per tile. | ||
100 | 0 - 40 | One fastener per tile. | ||
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 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
120 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
130 | 0 - 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
All | > 60 | The fastening system shall resist the wind forces in Section 1609.5.2. | ||
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 = 4.882 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 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 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.
(Ord. 2013-05 § 1, 2013; Ord. 2016-12 § 3, 2016; Ord. 2019-11 § 3, 2019)