Section 1511 — ROOF TOP STRUCTURES

1511.10 Occupied roof decks.

San Francisco Building Inspection Commission Codes · 2022 edition · ingested 2026-07-08 · San Francisco

1511.10 Occupied roof decks. Occupiable roof decks may be constructed of wood when the following conditions are met:

  1. The occupied roof deck is less than 500 square feet (46.45 m [2] ) in area.

  2. The deck boards are spaced not greater than 1/8 inch (3.2 mm) apart.

  3. Any open space around the perimeter between the deck and the roof surface shall be enclosed to within 1 inch (25.4 mm) of the roof surface.

  4. The decking is constructed of fire-retardant- treated wood approved for exterior use, or 2-inch (50.8 mm) nominal all heart redwood. Guardrails and fences may be constructed of any material permitted by this code.

  5. The deck is installed on top of a Class A or B fire-resistive roof assembly. The deck shall not be considered part of such roof assembly.

Chapter 16 STRUCTURAL DESIGN

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