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// CODE SNIPPET

R337.7.5 Enclosed Roof Eaves and Roof Eave Soffits

Los Angeles Residential Code > 3 Building Planning > R337.7 Exterior Covering > R337.7.5 Enclosed Roof Eaves and Roof Eave Soffits
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The exposed underside of enclosed roof eaves having either a boxed-in roof eave soffit with a horizontal underside, or sloping rafter tails with an exterior covering applied to the underside of the rafter tails, shall be protected by one of the following:

  1. Noncombustible material.
  2. Ignition-resistant material.
  3. One layer of 5/8-inch Type X gypsum sheathing applied behind an exterior covering on the underside of the rafter tails or soffit.
  4. The exterior portion of a 1-hour fire resistive exterior wall assembly applied to the underside of the rafter tails or soffit including assemblies using the gypsum panel and sheathing products listed in the Gypsum Association Fire Resistance Design Manual.
  5. Boxed-in roof eave soffit assemblies with a horizontal underside that meet the performance criteria in Section R337.7.10 when tested in accordance with the test procedures set forth in ASTM E2957.
  6. Boxed-in roof eave soffit assemblies with a horizontal underside that meet the performance criteria in accordance with the test procedures set forth in SFM Standard 12-7A-3.

Exceptions: The following materials do not require protection:

  1. Gable end overhangs and roof assembly projections beyond an exterior wall other than at the lower end of the rafter tails.
  2. Fascia and other architectural trim boards.

Related Code Sections


707A.5 [SFM] Materials and Construction Methods for Exterior Wildfire Exposure, Enclosed Roof Eaves and Roof Eave Soffits
The exposed underside of enclosed roof eaves having either a boxed-in roof eave soffit with a horizontal underside, or sloping rafter tails ...
Los Angeles Building Code > 7A [SFM] Materials and Construction Methods for Exterior Wildfire Exposure > 707A Exterior Covering > 707A.5 Enclosed Roof Eaves and Roof Eave Soffits
R337.7.5 Building Planning, Enclosed Roof Eaves and Roof Eave Soffits
The exposed underside of enclosed roof eaves having either a boxed-in roof eave soffit with a horizontal underside, or sloping rafter tails ...
Los Angeles Residential Code > 3 Building Planning > R337.7 Exterior Covering > R337.7.5 Enclosed Roof Eaves and Roof Eave Soffits
Section 702A [SFM] Materials and Construction Methods for Exterior Wildfire Exposure, Definitions
and an unenclosed space on the underside of the roof deck. Enclosed roof eaves have a boxed-in roof eave soffit with a horizontal underside or sloping rafter tails ...
Los Angeles Building Code > 7A [SFM] Materials and Construction Methods for Exterior Wildfire Exposure > 702A Definitions
Section R337.2 Building Planning, Definitions
on the underside of the roof deck. Enclosed roof eaves have a boxed-in roof eave soffit with a horizontal underside or sloping rafter tails with an exterior ...
Los Angeles Residential Code > 3 Building Planning > R337.2 Definitions
R804.3.2.1.1 Roof-Ceiling Construction, Eave Overhang
Eave overhangs shall not exceed 24 inches (610 mm) measured horizontally ...
Los Angeles Residential Code > 8 Roof-Ceiling Construction > R804 Cold-Formed Steel Roof Framing > R804.3 Roof Construction > R804.3.2 Roof Rafters > R804.3.2.1 Minimum Roof Rafter Sizes > R804.3.2.1.1 Eave Overhang
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