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STANDARDS AND GUIDELINES:
<br />If
<br />CHAPIN PARK
<br />EXISTING STRUCTURES
<br />A. BUILDING MATERIALS
<br />Original exterior building materials in the district include brick, stucco, clapboard, wood shingles, and brick or
<br />stone masonry. In some instances, vinyl, composite and aluminum siding have been applied over the original
<br />material.
<br />Required
<br />Original exterior building materials shall be retained when possible. Deterioration of wood materials shall be
<br />prevented through repair, cleaning and painting. The existing architectural detail around windows, porches, doors
<br />and eaves shall be retained or replaced by replicas of the same design when deteriorated beyond repair. Masonry,
<br />including brick and stucco structures, shall be maintained, and properly cleaned only when necessary to halt
<br />deterioration or to remove stains and shall be done in a method acceptable for the preservation of the surface: i.e.
<br />low-pressure water and soft natural bristle brushes. Brick or masonry mortar joints should be repointed only when
<br />there is evidence of moisture problems, or when sufficient mortar is missing to allow water to stand in the mortar
<br />joint. Existing mortar shall be duplicated in composition, color, texture, joint size, method of application and joint
<br />profile. When repairing stucco, stucco mixture shall be used. A professional shall make a study of the old stucco,
<br />to determine the exact mixture and underlayment used in the original work. Some repair methods are not
<br />compatible with the original techniques and may cause early disintegration of the repair work and the original
<br />work. Ample ventilation must be afforded the structure when siding is installed, in order to prevent increased
<br />deterioration of the structure from moisture and insects.
<br />Recommended
<br />Whenever possible, the original building materials should be restored. When maintaining or repairing
<br />original siding is not feasible, aluminum, vinyl or composite siding may be used. When used over wood
<br />surfaces, this siding should be the same size and style as the original wood. Every effort should be made to
<br />retain the original trim around windows, doors, cornices, gables, eaves and other architectural features.
<br />Prohibited
<br />Wood siding shall not be resurfaced with new material that is inappropriate or was unavailable when the building
<br />was constricted, such as artificial stone, brick veneer, asbestos or asphalt shingles. Sandblasting or the use of harsh
<br />detergents shall not be used on masonry including brick, stucco, limestone, flagstone and sandstone. This method of
<br />cleaning erodes the surface material and accelerates deterioration. Repointing shall not be done with a mortar of
<br />high Portland cement content which can often create a bond that is stronger than the building material. Usage of
<br />Portland cement can cause deterioration as a result of the differing coefficient of expansion and porosity of the
<br />historic masonry unit and the mortar. This most often results in serious damage to adjacent brick. Unpainted
<br />masonry surfaces shall not be painted unless they had been painted originally. Paint shall not be removed from
<br />masonry surfaces by any means that damage the surface.
<br />Not Recommended
<br />Waterproof or water repellent coatings or surface consolidation treatments should not be used on masonry surfaces
<br />unless required to solve a specific problem that has been studied and identified. Coatings are frequently
<br />unnecessary and expensive, and can accelerate deterioration of the masonry. Mortar joints, which do not need
<br />repointing, should not be repointed. Wood siding should not be power -washed.
<br />STAFF RECOMMENDATION: Referencing Chapin Park Standards & Guidelines, Existing Structures,
<br />A. Building Materials, Required: Original exterior building materials shall be retained when possible and
<br />Recommended: Every effort should be made to retain the original trim around windows, doors, cornices,
<br />gables, eaves and other architectural features, Staff does not recommend replacing wood trim, soffit, and
<br />fascia with new artificial product. Furthermore, the Secretary of Interior Standards for Rehabilitation
<br />require that "deteriorated architectural features be repaired rather than replaced, wherever possible. In the
<br />event that replacement is necessary, the new material should match the material being replaced in
<br />composition, design, color, texture, and other visual properties." Substitute materials should be used only
<br />on a limited basis and only when they will match the appearance and general properties of the historic
<br />material and will not damage the historic resource.
<br />Elicia Feasel
<br />Executive Director
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