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East Wayne Street Historic District Guidebook <br />Prohibited <br />}J <br />joints <br />Wood siding shall not be resurfaced with new material which is <br />inappropriate or was unavailable when the building was constructed, <br />\ <br />`ocor c <br />such as artificial stone, brick veneer, asbestos or asphalt shingles. <br />! <br />Mortar not cleaned out to a <br />sal&daot Uniform depth. <br />Sandblasting or the use of harsh detergents shall not be used on <br />a <br />masonry including brick, stucco, limestone, flagstone, and sandstone. <br />This method of cleaning erodes the surface material and accelerates <br />j "' + <br />\ <br />us" of brick damaged by tool <br />ar grinder. Creates widar joint. <br />deterioration. Brick surfaces shall not be painted unless they had been <br />painted originally. Repointing shall not be done with a mortar of high <br />Portland cement content which can often create a bond That is , <br />stronger than the building material. This can cause deterioration as a <br />%/j <br />\� <br />Cornice <br />result of the differing coefficient of expansion and the differing <br />Mortar Cleaned out to a uni. <br />porosity of the material and the mortar which can result in serious <br />\ <br />form depth —about V deep. <br />damage to adjacent brick. Paint shall not be removed from masonry <br />surfaces indiscriminately. <br />�' x <br />Undantasd edges a) brick. <br />I <br />Joints t � <br />loo full <br />}J <br />joints <br />siiyttly - -r <br />Wide f"thr <br />edge susceptible <br />recessed �► \\ <br />! <br />to apaWng <br />.. •.o <br />}J <br />joints <br />siiyttly - -r <br />recessed �► \\ <br />! <br />Figura 6. Companson of visual tf fea of full mortar iornts us 161hily <br />rrce d joints. Filling ioints too fail hula the aereral ionic thickness <br />cad change the charaurr of the original brickwork: <br />Ftswe e. CO—moo of brcomcr .ad comer onev n of mom. <br />lows for remwuF. Dm V. Robert G Mori and t3.n11 W. Look. <br />Not Recommended <br />Waterproof or water repellent coatings or surface consolidation <br />treatments should not be used on masonry surfaces unless <br />required to solve a specific problem that has been studied and <br />identified. Coatings are frequently unnecessary, expensive, and <br />can accelerate deterioration of the masonry. Mortar joints <br />which do not need repointing should not be repointed. <br />Not Cold <br />NonrW (Pricks expand) (Pricks contract) <br />\\ <br />A. Flexible Mortis 'i .� _ '''.j• <br />(Lima) ; -� -•" <br />Mortar compremeas Mortis flexes <br />a. (nAexibk Mortis <br />spalling Cracks open up <br />Fig— 3. Diapammetu .ketches .hm mz ./*U of +emyerotun chance aeon masanry. I—bi. mortar (A) expands and camnex,a roith trmaeroeure <br />dr.nrYes. 3—is )pedal by injl"4 a aroma, tW rend to rped ae the wife. (eh. area of arcww urar) K hw w her and "pores, fawn the mortar <br />W;­ a is coil. This totter C" 69 " ape" crocks perm,rtrnF the entry of t W and aa.mg additional dareriomcron. Ad.yud from Mantqunca <br />ai Old Puddinp. Boc.. imp 010. Nadond Smmish bontrrte for &.Ldi g Re.eeeh. $tockhoim. L97J. <br />..-- -.._.. ..._... -._.. ...v...... ._ _ . ............. <br />-- paae 20 <br />page 42 <br />