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

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�f 2, 1 buildings. Their size and construction give information about the construction of 2 the building and often the wealth of the original owner. Windows and doors also 3 have a substantial impact on the appearance of the building. Their importance to 4 the historic integrity and visual character of older buildings is well documented; 5 many buildings are determined ineligible for the National Register once their 6 windows have been replaced. In addition, properly fitted restored or well- 7 maintained and weather stripped original windows with added storm windows 8 often provide superior thermal efficiency to replacement windows. 9 10 Most of the windows in older homes in Orange County are double hung—finro 11 sash units that move up or down. The sash typically contains one to nine "lights" 12 or glass panes. The panes of glass are held in place by muntins—the wood grid 13 pattern. The size of the entire window unit, the size and number of lights, and the 14 width of the muntins are all.keys to when the building was constructed. Replacing 15 the windows with windows of another size or type alters the historic record of the 16 building and substantially changes its appearance. For example, if a house has 17 tall, elongated windows new units should respect these proportions and , 1g dimensions. Squat, square replacements would not be acceptable. ', 19 2o Another commonly replaced building item is the window shutter. Historically, 21 shutters, whether solid shutters or louvered blinds, were hung on hinges and were 22 designed to fully cover the window or door. The HPC encourages property 23 owners to maintain working shutters. Requests to replace working shutters with 24 non-operable shutters whether wood or plastic will be discouraged. Requests to 25 add decorative shutters that are not original to the house will also be discouraged. 26 27 The selection of windows and doors for additions or detached new construction is 2s also important. New windows should be visually compatible with existing units 29 and historically appropriate to the time of construction. New windows should 3o never make an addition or detached unit appear to have been built earlier than 31 the existing contributing building. 32 33 34 DESIGN STANDARDS for Windows and Doors 35 36 III-C-9. The HPC encourages the use of storm windows to protect historic windows from 37 deterioration. � 38 39 III-C-10. Existing windows and doors should be maintained and preserved. 40 ai III-C-11. When windows must be replaced, new units should be the same size, type, 42 design, and material as the original windows. 43 44 III-C-12. Windows and doors should never be removed, or"covered over" without 45 replacement. Windows or doors that are not used can be enclosed using a 46 traditional method such as louvered blinds to create a "false" door or window 47 without disrupting the balance. 48 49 III-C-13. The HPC discourages the use of replacement aluminum or vinyl windows on so contributing buildings. 51 52 III-C-14. When new windows are used for an addition or detached new construction 53 project, units should have panes with individual wood muntins (true-divided 54 lights). Windows with "snap-in" muntin grids are inappropriate for historic 9/28/2010 Draft Orange County Design Standards 34