Agenda - 10-05-2010 - 4g - Laserfiche WebLink

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�r 1 The HPC typically recommends the use of traditional materials for in-kind repairs 2 and selective part replacement. However, since old growth southern yellow pine 3 is no longer readily available, the HPC recommends the use of western red cedar, 4 slow growth cypress, pressure treated redried pine, redwood and juniper, for s exterior use. These species are more resistant for exterior use. Pressboard type 6 products, such as masonite, are not suitable for exterior use in Orange County 7 due to the humid climate. s 9 l0 DESIGN STANDARDS for Wood 11 12 III-B-1. Retain and preserve historic wood fabric such as siding, trim and details, and t3 wood features that are significant in defining the overall historic character of a 14 contributing building, structure, or site. 15 16 III-B-2. Maintain and protect wood features and surfaces with appropriate methods, 1� always using the gentlest effective method. Regular maintenance should include 18 termite inspection and/or treatment. 19 2o III-B-3. Repair deteriorated or damaged wood features through traditional patching (best 21 method), consolidating with epoxy (frequently acceptable) or reinforcing by other 22 accepted preservation methods. 23 24 III-B-4. Replace deteriorated or damaged wood features, if necessary, to match the 25 original in design, material, dimension, and detail. Replace only the deteriorated 26 portion or detail of a feature rather than the entire feature whenever possible. It is 2� not appropriate to replace or cover wooden features such as siding, trim, or 2s window sash with contemporary substitute materials such as vinyl, masonite, or 29 aluminum. In most cases, the HPC will deny requests to do so. Covering original 3o fabric with substitute synthetic materials can trap moisture within the wall surface, 31 produce mold and damage the inner layers of siding—and eventually the wall 32 framing system. 33 34 III-B-S. Replace a missing wood feature with a new feature based upon accurate 35 documentation of the original or a new design compatible with the scale, size, 36 material, and color of the local landmark building. It is not appropriate to 3� introduce wood features or details to a local landmark building in an effort to 38 create a false historic appearance. �, 39 I 4o III-B-6. Most wood buildings should be protected with paint or clear wood preservative to 41 protect the material from exposure to weather. The HPC does not regulate paint 42 colors, but recommends the use of quality paint products in traditional colors. 43 44 45 Masonry 46 Many historic buildings were constructed with masonry structural components and 47 decorative elements. Brick, stone, stucco, concrete, and tiles are common 48 historic building materials that may be found in local landmark buildings. Typical 49 masonry features include foundations, walls, chimneys, lintels, sills, parapets, so steps, and walkways. Whatever the application, masonry materials by their 51 nature introduce texture, pattern, and color. Because of its importance, masonry 52 surfaces and features should be maintained and repaired properly. 53 y/27/2010 Drafi Orange County Design Standards 27