Page 208 - Healdsburg, CA Citywide Design Guidelines
P. 208

8.37  Do not use synthetic materials, such as aluminum,
                                                    vinyl or panelized brick, as replacements for primary
                                                    building materials.
                                                    a.  Primary building materials, such as wood siding
                                                       and masonry, should not be replaced with synthetic
                                                       materials.
                                                    b.  Modular materials should not be used as replacement
                                                       materials. Synthetic stucco and panelized brick, for
                                                       example, are inappropriate.

        Figure 8.10: Use approved
        technical procedures for cleaning,   8.38  Covering an original building material with a new
        refinishing and repairing historic          material is inappropriate.
        materials. As shown here, harsh             a.  Vinyl siding, aluminum siding and new stucco are
        cleaning methods, such as                      generally inappropriate on historic buildings. Other
        sandblasting or grinding are                   imitation materials that are designed to look like wood
        inappropriate.
                                                       or masonry siding, fabricated from other materials, are
                                                       also inappropriate.


                                             8.39  Consider removing later covering materials that have
                                                    not achieved historic significance.
                                                    a.  Once the non-historic siding is removed, repair the
                                                       original, underlying material.
                                                    b.  If a structure has a stucco finish, removing the covering
                                                       may be difficult, and may not be desirable. Test the
                                                       stucco to assure that the original material underneath
                                                       will not be damaged.


        When replacing materials on
        primary surfaces, match the          Mechanical Equipment
        original material in composition,    The installation of mechanical equipment should not be visible on
        scale and finish.                    the primary façade of a historic structure.


                                             8.40  Install heating and air conditioning units in window
                                                    frames that are not on the primary façade of the
                                                    historic structure.


























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