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Required Ur 'ou cztchocbuilding nnkz �io|nubu]l�cru�uiood. �c�ioruinnofvvoudom|cdoJxshoU be prevented through repair, cleaning and painting. The existing architectural deta around windows, doors and caves s bc retained or replaced ly replicas (fUesamc design and m vhuu deteriorated beyond repair. Masonry including brick and stucco shall bccleaned only when necessary to halt deterioration ortoremove stains. and diu}| be (lone with u noo(hod acceptable For the |xcxcrvodouo[dho surface: i.e. low pressure water and *nd nnb/ru\ bdydc houxboo. When repairing stucco, only appropriate stucco mixture dhu}| be used. llocoolnluldCd Whenever possible, the original building materials should be restored. Metal or vinyl may be used as an alternative to maintaining ur replacing tile original surface material when it resembles the original surface material, When used over wood surfaces. this siding should be tire same size and style as the original wood. Evo[yoObrt should be made to retain the original trioi around ndndov/e doors, cor gables, caves and other uohJicciurnl features. Ample ventilation must be offbcdod the structure when aluminum or vinyl ixtohc installed iuorder to prevent increased deterioration of' the stnicture frorn moisture and/or insects. Mortarjoints should be repointed only when there is evidence o[ moisture problems ur when sufficient mortar iymissing tu allow water to stand inthe nnoUar'oioL Existing mortar shall be duplicated in composition, color, texture, joint size, nocUhodnf app and joint profile. Prohibited Wood siding shall not bc resurfaced with material such ua artificial stone, brick veneer, asbestos or asphalt shingles, which ia inappropriate m was unavailable when the building was constructed. Sandblasting or the use ofbnrs'li detergents obul| not 6c used on masonry or stucco. 7bis method o[ cleaning erodes the surface material and accelerates deterioration. Not RcCocouleDdo] Waterproof or water repellent coatings or surface consolidation treatments should not be used on masonry surface unless required to solve a specific problem that lias been studied and identified. Coatings are frequently unnecessary and expensive, and can accelerate deterioration of the masonry. Mortarjoints which do not need repointing should not be. Repointing should not be done with mortar of high Portland cement content, which can often create a bond that is stronger than the building materials. This can cause deterioration uau result of the differing porosity *fthe nzutcdul and the mortar — tile end result being serious daniage to adjacent brick. Paint should not be reirioN ed from masonry surfaces indiscriminately. [`. WINDOWS AND DOORS lVindun/nnd door frames are in most cases wood. Brick structures have stone sills and brick lintels In some cases where synthetic siding has been applied, window trim has been covered. Many s|rnck/rcn in the district have aluminum storm windows. 8onnehouxcs retain wood franied xk/nn windows. Required Original windows and doors including sash, liuic(n, sO\s, shutters, decorative g|uxo, pcJinoco\o, hoods and hardware shall be retained or when deteriorate(] beyond repair, replaced with units and trim resembling the original, Recommended Wood frurnc x{noo window's and doors, painted to /outnb the original, should be used but sbnu|J not damage existing Ooo\cn. If new suxb and doors are used, the existing uroriginal materials, design, and hardware should be used. When n)o1ul xioou doors are used, ihuydhnu!dbc painted, anodized or coated to match the existing. When awnings are used they should be of canvas material. Prohibited Ori6nal doors, windows, and hardware sliall not be discarded when they can be restored and reused in place. New window and door openings which would alter the scale and proportion of the