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Historic Preservation Commission Minutes June 1, 2011 2 Scope of Work 1. The Department of Environment, Agriculture, Parks and Recreation has received a COA application from the Moorefields Foundation (represented by Barry Jacobs) proposing to replace the existing cedar shake roof with fiberglass (asphalt) laminated architectural shingles by CertainTeed INDEPENDENCE, color “weathered wood.” Proposed shingles are algae resistant and have a 50-year warranty. (Roofing sample provided at meeting.) 2. The scope of work includes: removing the existing roof, repairing or replacing deteriorated sheathing to match existing, installing a titanium synthetic roof underlayment prior to application of new shingles. New flashing and vent covers will be installed, using appropriate fasteners. New shingle roof will have ridge vents. 3. Roof trim—fascia and soffits—will be inspected and repaired/replaced as appropriate, in pine, to match existing. New wood trim will be painted to match existing. 4. Existing gutters will be repaired, as necessary, and rehung. 5. Foundation plantings will be protected during work. Extent of the HPC’s Purview The Historic Preservation Commission’s purview of this site is limited to the exterior of all structures and landscaping features. Relevant Design Standards Based on the information in the application, the follow design standards are relevant to a Certificate of Appropriateness to replace an existing roof, and replace sections of deteriorated roof trim on a Local Landmark building: • The standards applying to roofing (III-B-20 through III-B-22), rooflines and roof details (III-C-15 and III- C-16) • The standards that apply to maintenance (III-A-1 and III-A-2) and repairs to wood surfaces (III-B-1 through III-B-6), and • To a lesser extent, two of the standards on setting (II-A-2 and II-A-3) that refer to the protection of the overall view or vista and the protection of existing landscaping. Determination of Design Standard Compliance III-B-20. The original roof material should be preserved whenever possible. Standard III-B-20 appears to be met by the proposal. The following is an excerpt from page 30 of Design Standards for Orange County Local Historic Landmarks and Local Historic Districts, “The HPC discourages property owners from re-roofing contributing buildings with asphalt shingles when information about their historic roofing is available, unless the additional expense of another material would cause undue hardship for the owner.” According to the application materials, the existing roof was installed in the early 1980s and began to show serious signs of wear by 2000. The applicant began a series of emergency patch repairs to control water infiltration in 2008. The roof has continued to deteriorate, and now the roof trim—fascias and soffits—are showing signs of water damage as well. The subject property is owned and funded by a foundation and governed by board. The proposed roofing material has been used in neighboring historic districts. The color was selected to mimic the look of the 1980s original wood shingles. III-B-21. Roof trim (fascia, soffit etc.) should be maintained and preserved. Necessary repairs shall be made using the same materials and the same pattern as the original detail. Standard III-B-21 appears to be met by the proposal. Specifics regarding the repair and replacement of deteriorated sections of roof trim—fascia and soffit—outlined in the application speak to the use of pine to match the existing material and painted to match the existing finish. III-B-22. Roof material on new additions should be compatible with existing roofs in material, type, color, etc Standard III-B-22 does not apply to this project. No new construction/additions are proposed.