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STANDARDS AND GUIDELINES: CHA N PARK
<br />NII. EXISTING STRUCTURES
<br />BUILDING MATERIALS
<br />riginal exterior building materials in the district include brick, stucco, clapboard, wood shingles, and brick or stone masonry. In some instances, vinyl,
<br />composite and aluminum siding have been applied over the original material.
<br />Required
<br />Original exterior building materials shall be retained when possible. Deterioration of wood materials shall be prevented through repair, cleaning and
<br />painting. The existing architectural detail around windows, porches, doors and eaves shall be retained or replaced by replicas of the same design when
<br />deteriorated beyond repair.
<br />Masonry, including brick and stucco structures, shall be maintained, and properly cleaned only when necessary to halt deterioration or to remove stains
<br />and shall be done in a method acceptable for the preservation of the surface: i.e. low-pressure water and soft natural bristle brushes. Brick or masonry
<br />mortar joints should be repointed only when there is evidence of moisture problems, or when sufficient mortar is missing to allow water to stand in the
<br />mortar joint. Existing mortar shall be duplicated in composition, color, texture, joint size, method of application and joint profile.
<br />When repairing stucco, stucco mixture shall be used. A professional shall make a study of the old stucco, to determine the exact mixture and
<br />underlayment used in the original work. Some repair methods are not compatible with the original techniques and may cause early disintegration of the
<br />repair work and the original work.
<br />Ample ventilation must be afforded the structure when siding is installed, in order to prevent increased deterioration of the structure from moisture and
<br />insects.
<br />Recommended
<br />Whenever possible, the original building materials should be restored. When maintaining or repairing original siding is not feasible, aluminum, vinyl or
<br />composite siding may be used. When used over wood surfaces, this siding should be the same size and style as the original wood. Every effort should be
<br />made to retain the original trim around windows, doors, cornices gables, eaves and other architectural features.
<br />Property owners should contact the Historic Preservation Commission of South Bend and St. Joseph County prior to initiating any restoration or
<br />rehabilitation effort. The Commission is an invaluable source of information about all facets of rehabilitation and restoration — materials, methods,
<br />contractors and the like.
<br />Prohibited
<br />Wood siding shall not be resurfaced with new materials that is inappropriate or was unavailable when the building was constructed, such as artificial
<br />stone, brick veneer, asbestos or asphalt shingles.
<br />Sandblasting or the use of harsh 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.
<br />Repointing shall not be done with a mortar of high Portland cement content which can often create a bond that is stronger than the building material.
<br />Usage of Portland cement can cause deterioration as a result of the differing coefficient of expansion and porosity of the historic masonry unit and the
<br />mortar. This most often results in serious damage to adjacent brick.
<br />Unpainted masonry surfaces shall not be painted unless they had been painted originally. Paint shall not be removed from masonry surfaces by any means
<br />Rat damage the surface.
<br />ot Recommended
<br />Waterproof or water repellant coatings or surface consolidation treatments should not be used on masonry surfaces unless required to solve a specific
<br />problem that has been studied and identified. Coatings are frequently unnecessary and expensive, and can accelerate deterioration of the masonry. Mortar
<br />joints, which do not need repointing, should not be repointed. Wood siding should not be power -washed.
<br />C. WINDOWS AND DOORS
<br />Window and door frames are in most cases wood and vary depending upon the style of the home. Many are double -hung windows with wood
<br />trim and sills. Brick structures have stone sills and brick lintels. In some cases where aluminum siding has been applied, the window and door
<br />trim has been covered. About half of the structures in the district have aluminum storm windows; the other half have wood storm windows.
<br />Required
<br />Original windows and doors shall be retained including sashes, lintels, sills, shutters, decorative glass, pediments, hoods and hardware. When
<br />deteriorated beyond repair, they shall be replaced with units and trim resembling the original.
<br />Recommended
<br />Wood storm windows and doors painted or finished to match the original should be used but should not damage existing frames. If new sashes
<br />or doors are installed, the existing or original materials, design and hardware should be used. When metal storm doors are used, they should be
<br />painted, anodized or coated to match the existing. When awnings are used, they should be of canvas material.
<br />STAFF RECOMMENDATION:
<br />1. Staff acknowledges that original wood windows are in poor condition but does not recommend replacement with
<br />proposed JELD-WEN vinyl. Advised applicant to investigate further into repairing windows or continue search for a
<br />material that is more appropriate.
<br />Applicant has voluntarily decided to retain the existing windows.
<br />Written by
<br />Elicia Feasel
<br />Historic Preservation Administrator
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