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East Wayne Street Historic District Guidebook <br />Prohibited <br />Wood siding shall not be resurfaced with new material which is <br />inappropriate or was unavailable when the building was constructed, ,f� Mormor <br />tar not Clewed out to a <br />such as artificial stone, brick veneer, asbestos or asphalt shingles. miricien= uniform depth. <br />Sandblasting or the use of harsh detergents shall not be used on <br />masonry including brick, stucco, limestone, flagstone, and '= ...... ;, " Ugae of brick Asinuised by tool <br />or grinder. Ciesxtn order faint. <br />sandstone. This method of cleaning erodes the surface material and <br />accelerates deterioration. Brick surfaces shall not be painted unless <br />they had been painted originally. Repainting shall not be done with <br />a mortar of high Portland cement content which can often create a <br />bond That is stronger than the building material. This can cause <br />deterioration as a result of the differing coefficient of expansion and / rot. _ <br />the differing porosity of the material and the mortar wfiich can result Mortar cleaned out to a uni- <br />in serious damage to adjacent brick. Paint shall not be removed from form depth—'bolt` I- deep' <br />masonry surfaces indiscriminately. . „� :;; <br />%-- � L(ndaasa6ed edges of brick. <br />joints C1 <br />finetoo f <br />too Full ^ <br />i. Camprroon of incorrect and eoereer prepatanon of <br />mortar <br />Wide feather :� �� .'r , _ - _ 't�,jl * t �'n Roarer C. Matic and Damd w. Look. <br />edge susceptible " joints for repo rawf. Drawtnf <br />to spallin$ <br />Not Recommended <br />Waterproof or water repellent coatings _ or surface <br />joints consolidation treatments should not be used on masonry <br />eeeesed surfaces unless required to solve a specific problem that has <br />been studied and identified. Coatings are frequently <br />unnecessary, expensive, and can accelerate deterioration of <br />Filart>. Catnoarsson of a..go full offart!+arrearlams thias ck""" <br />the masonry.' Mortar joints which do not need repainting <br />messed loins. -.Wing Tans too jut! hides the atsua( latae thirknesa <br />and ehenre: the ehaeaerrr of the arrrrrat briektaa*- should not be repointed. <br />Hot cold <br />Normal (Bricks expand) (Bricks contract) <br />A. Flexible Mortar ! <br />(Lim:i - l <br />Mortar commoressa Mortar flexes <br />H. inflexible Morar <br />(C,xmmx) <br />Spalling Cracks open up <br />Figure 3. Diafrsmnunc skstcnar snownef ejjem or trnraera ire change ueon masonry. Fe'embir mortar (A) expands and camraers wnh rrme"n"urr <br />chmgts. Smelts banded by rndszib(r mortar l8) rend to snnA a the rafts(the area of rrcatst stress) in not weather and seprrarr haat the mortar <br />wlna n is cold.ins latter tondinon opens cracks. ",nntnnr rhe entry of water and causing addinanai derrnore"an. Aaamea ir'om Maintenance <br />of Old $uddings. Document Dltlt National Swedish Institute jor Suu(ding Research, Stocknaim. I575, <br />page 42 <br />