Re‐roofing in the San Fernando Valley requires a permit from the City of Los Angeles Building and Safety
and involves two inspections. The first is a roof nailing inspection, where an inspector will inspect the
nailing pattern of the roof deck and a final inspection, to ensure the job was completed. The City has no
minimum requirements on the type of product to be installed and follows California’s 2007 Uniform
Building Code. However, if you are part of a Homeowners Association there may be restrictions on the
particular roofing product or color you install. For additional information you may contact Building &
Safety online at
Listed below is a breakdown of the minimum roofing requirements based upon the most common existing roof coverings.
They include Wood Shake, Composition or Asphalt Single, Concrete Tile, and low slow of flat roofing.
| Categories |
Wood Shake |
Asphalt Single |
Tile |
Low slope |
| No. of layers |
Max is 1. No addl. layers allowed |
Max layers is 3 |
Max is 1. No addl. layers allowed |
Added layers may require Eng. Report |
| Plywood |
1/2" OSB or CDX Plywood |
Usually not needed. |
Usually not needed. |
Usually not needed. |
| Minimum Felt Underlayment* |
15# ASTM. 30#(+) is recommended. |
15# ASTM. 30#(+) is recommended. |
2 layers of 40#(+) is recommended. |
Not applicable |
| Minimum Fire Rating |
Class A minimum |
Class A minimum |
Class A minimum |
Class B minimum. Recommend Class A. |
| Color Restrictions |
** No Restrictions ** |
| Maximum Weight |
** 6 lbs per square foot. Over 6 bls requires Engineers Report ** |
| * Roofs with a slope of less than 4:12 require a minimum of 2 layers of a 15 lb. ASTM felt underlayment. |