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APPARENT IN THIS BRICK MASONRY <br />BUILDING <br />DECORATIVE BRICK USED AROUND OPENING <br />AND AT THE TOP OF BUILDING AS A CORNICE <br />Many of the commercial buildings in <br />Paris are constructed of brick <br />masonry. These brick walls are <br />usually about a foot thick or more and <br />carry the weight of the building. <br />Brick walls are constructed by <br />stacking single pieces together to <br />create a pattern. Most wall patterns <br />have a defined: horizontal line. <br />0 Brick is used to create decorative <br />features, that need to be preserved, <br />as they add to the character of the <br />building. These features are usually <br />found around openings on a building, <br />at the top of buildings to create a <br />cornice, or to add to the horizontal <br />organization of the building and block. <br />a Brick does not require paint like its <br />metal and wood counterparts. Brick <br />is a clay material that "breathes". <br />Some coatings can trap moisture in <br />historic brick causing damage to <br />mortar and interior finishes. Avoid <br />changling the appearance and scale <br />of a brick building by painting it. <br />0 The use, of water -repellant or water- <br />proofing coatings is strongly <br />discouraged. <br />Cleaning of Brick Walls <br />• Sand blasting is prohibited. <br />• It is important not to damage the face <br />of the brick by sandblasting it, using <br />abrasive methods, or by the use of <br />high pressure water sprays. <br />• Chemical cleaning may be requiired <br />for difficult stains or graffiti, but such <br />cleaning must be prescribed or <br />conducted by a knowledgeable <br />professional. <br />• Water washing of a buiilding is the <br />gentlest means of cleaning masonry <br />surfaces. Prior to any water washing <br />