Page 201 - Healdsburg, CA Citywide Design Guidelines

Roof
The character of a historic roof should be preserved, including its
form and materials, whenever feasible.

8.8 Preserve the original roof form of a historic structure.
a. Avoid altering the angle of a historic roof. Instead,
maintain the perceived line and orientation of the roof as
seen from the street.

8.9 Preserve the original eave depth of a roof. Hip roof with boxed eave and
a. The shadows created by traditional overhangs contribute brackets tops the primary form,
to one’s perception of the building’s historic scale and and a hip roof tops the porch.
therefore, these overhangs should be preserved. Cutting
back roof rafters and soffits or in other ways altering the
traditional roof overhang is inappropriate.

8.10 Preserve a decorative and functional roof feature.
a. Preserve decorative elements, including crests.
b. Retain and repair functional roof features, including
chimneys, half-round gutters, boxed soffits and
downspouts.

8.11 New roof materials should convey a scale and texture Hipped roof with gable front and
similar to those used traditionally. side accents, and a shallow hip
a. When choosing a roof replacement material, the roof over porch
architectural style of the structure should be considered.
See Appendix E for more detail.
b. Composition shingle roofs are generally appropriate
replacements for wood shingles on residential buildings.
c. Shingles that contain embedded photovoltaic systems
are also appropriate in dark colors.

8.12 Minimize the visual impact of skylights and other
rooftop devices.
a. A skylight that is flush with the roof plane may be Gable or Hip Roof Form
considered where it remains visually subordinate. Attic Vent or Window
b. Skylights should not interrupt the plane of the historic Chimney
roof, and should be located below the ridgeline. Decorative Roof Beam
c. Locate electronic data transmission and receiving Exposed Rafter Tail
devices to minimize impacts to the extent feasible.
Figure 8.6: Preserve a decorative
and functional roof feature.

Treatment of Historic Resources Chapter 8 193