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be retained or replaced by replicas of the same design when deteriorated beyond repair. Masonry, including brick and stucco structures, shall be maintained, and properly cleaned only when necessary to halt deterioration or to remove stains 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 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 mortar joint. Existing mortar shall be duplicated in composition, color, texture, joint size, method of application and joint profile. When repairing stucco, stucco mixture shall be used. A professional shall make a study of the old stucco, to determine the exact mixture and underlayment used in the original work. Some repair methods are not compatible with the original techniques and may cause early disintegration of the repair work and the original work. Ample ventilation must be afforded the structure when siding is installed, in order to prevent increased deterioration of the structure from moisture and insects. Recommended Whenever possible, the original building materials should be restored. When maintaining or repairing original siding is not feasible, aluminum, vinyl or 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 made to retain the original trim around windows, doors, cornices, gables, eaves and other architectural features. Property owners should contact the Historic - _Preservation Commission of South Bend and St. Joseph County prior to initiating any restoration or rehabilitation effort. [Address and contact information is listed in the front of the Guidebook.] The Commission is an invaluable -- source of information about all facets of rehabilitation and restoration — materials, methods, contractors and the like. Prohibited Wood siding shall not be resurfaced with new material that is inappropriate or was unavailable when the building was constructed, such as artificial stone, brick veneer, asbestos or asphalt shingles. Sandblasting or the use of harsh detergents shall not be used on masonry including brick, stucco, limestone, flagstone and sandstone. This method of cleaning erodes the surface material and accelerates deterioration. 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. 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 mortar. This most often results in serious damage to adjacent brick. Unpainted masonry surfaces shall not be painted unless they had been painted originally. Paint shall not be removed from masonry surfaces by any means that damage the surface. Not Recommended Waterproof or water repellent coatings or surface consolidation treatments should not be used on masonry surfaces unless required to solve a specific problem that has been studied and identified. Coatings are frequently unnecessary and expensive, and can accelerate deterioration of the masonry. Mortar joints, which do not need repointing, should not be repointed. Wood siding should not be power- washed. STAFF RECOMMENDATION: Staff recommends approval and will work with Jason, Pat McCoy's contractor, to determine the best method to economically employ after the insul -brick siding is removed. Also any architectural features that are uncovered must be replicated. On a motion by Mike Voll with a second by Jerry Niezgodski to approve application as submitted with the condition that the staff makes a conditional assessment at the time to determine full or partial replacement. Vote: 4 -0 COA 2011 -0711 was approved unanimously with conditions. 2. STAFF REPORT CONCERNING APPLICATION FOR A CERTIFICATE OF APPROPRIATENESS Date: 29 July 2011 Application Number: 20110715 Property Location: 834 Park Avenue Architectural Style/Date /Architect or Builder: Front dormer Bungalow /1895 Property Owner: David Mesecar Landmark or District Designation: Chapin Park Rating: Contributing DESCRIPTION OF STRUCTURE/ SITE: The house is a two storey frame set upon a rectangular birck foundation. It has wood clapboard on the first storey, decorative shingles at the second and decorative half - timbering in the gables. It has 1/1 double hung windows with simple lintels. The roof is steeply pitched with a shed front dormer with decorative shingles. The porch roof is an extension of the main roof. The 3 /, width porch has a concrete floor with wrought iron railings and posts. There is a 1955 13'x16' one storey addition to the rear of the house with casement windows. There is a deck also in the rear of the house across the back. ALTERATIONS: The roof, concrete porch and wrought iron railings are not original to the home. The addition was added in 1955 and the deck is also a recent addition. The windows and doors have aluminum storms. APPLICATION ITEMS: Replace standard window with bay window. DESCRIPTION OF PROPOSED PROJECT: The home owner wished to remove the casement windows in the 1955 addition and replace it with a salvaged bay window that will be about 12 inches long than the current opening.