ALL RE-ROOFS REQUIRE A PERMITApply for a Re-Roofing Permit Online To clarify the requirements of Appendix Chapter 15 as it applies to certain roofing materials, the following policy should apply. Minimum roof covering of any occupancy shall be Class B or better (City ordinance Sec 14.03.160). BUILT-UP ROOFING- Remove all existing roofing and have sheathing inspected.
- Re-roof per Appendix Chapter 15, 2007 CBC and City Ordinance Sec 14.03.160
- Any roof with ponding shall be pitched to drain, before re-roofing.
ASPHALT SHINGLES- Asphalt shingles may be applied on slopes of 2 feet per 12 feet or greater or as per listing. Solid sheathing is required. Double felt laid shingle fashion is required for slopes less than 4 and 12.
- Asphalt shingles may be applied over wood shingle roofs. An inspection by a Building Inspector is required to confirm the wood shingles are in a condition to act as solid underlayment.
- Asphalt shingles may not be installed over wood shakes or spaced sheathing.
- No roofs shall be installed over more that one existing roof.
Exception: Manufacturers installation requirements apply and existing roof framing must be designed to carry total load. (Need structural analysis by California Certified Structural or Civil Engineer) and approval of the Building Official. WOOD SHINGLES AND SHAKES- All wood roofs shall be Class "B" or better. Installer shall show Inspector a listing by an approved testing agency (i.e. U.L.) slip showing Class "B" or higher rated material was delivered to job site. On-site inspection of material being installed may be substituted. Buildings other than residential may require higher classification. (See Chapter 15, 2007 CBC and City Ordinance 14.03.160)
- Wood shingles and shakes may be laid over one layer of existing wood shingles. Type 30 felt shall be used as underlayment. Inspection is required to determine condition of existing roof. Do not cover without Building Inspectors approval.
- All roofs laid over an existing roof require metal edging. Two-way or three-way metal may be used for Class "C". For a Class "B" roof, only three-way metal shall be accepted.
MANUFACTURED ROOFING MATERIALS- Metal, concrete, clay and other manufactured roofing products shall be listed by ICC. Permittee to provide City with an ICC-ES listed number. (www.icc.es.org)
- All tile roofs weighing 7lbs or greater per square shall be engineered by a California Certified Structural or Civil Engineer with details of installation. Engineer must wet stamp and wet sign calculations/details.
- Re-roofing requiring structural calculations and/or modifications must have a framing inspection before the sheathing material is applied.
Approved by ___________________
Hadi Tabatabaee. P.E., C.B.O.
Building Official |
