Roof Deck Exiting Requirements Fbc

Table 201 1 are deemed to comply with the requirements of section 507 2 2 511 5 of the 2004 florida building code existing building.

Roof deck exiting requirements fbc. Drip edge at eaves shall be permitted to be installed either over or under the underlayment. Roof decks and roof coverings must be designed to chapter 16. Minimum number of exits or access to exits per story. Eave drip edges shall extend 1 2 inch 13 mm below sheathing and extend back on the roof a minimum of 2 inches 51 mm.

There may however be a local requirement for free egress from unoccupied roofs so it s best to check with the local code official. A single exit or access to a single exit shall be permitted in accordance with section 1006 3 2. When replacing roofing the existing wood roof deck may have to be re nailed in accordance with the current provisions of chapter 16 high velocity hurricane zones of the florida building code building. Free egress from the roof to the stairwell is required for occupied roofs but is not mandated by the ibc or nfpa 101 for unoccupied roofs.

Underlayment in the 7th edition 2020 florida building code building fbcb and the florida building code residential fbcr have been strengthened. The new underlayment requirements are consistent with those recommended by the insurance institute for business and home safety ibhs to create a sealed roof deck srd. Sstd 12 astm e 1886 and astm e 1996 or miami dade pa 201 202 and 203. Provide drip edge at eaves and gables of shingle roofs.

Overlap to be a minimum of 3 inches 76 mm. The required number of exits or exit access stairways or ramps providing access to exits from any story or occupied roof shall be maintained until arrival at the exit discharge or a public way. Board roof decking secured with smaller fasteners. Board roof decking secured with at least two 8d nails into roof framing members shall be deemed to be sufficiently connected.

The florida building code adopts by reference the florida fire prevention code as adopted by the state.