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SEALIPdG EXTERIOR iXASOP7RY AiqD STONE WALL5 <br />A. SCOPE: <br />Furnish and install a1I labor, equipment, and materiaZs <br />necessary to completely seal the exterzor masonry and stone <br />walls as described herein. <br />B. QUALIFICATTQN OF WORKMEPd: <br />Only skilled and experienced mechanics, engaqed full time <br />in sealing exterior, masonry and stone wall work will be per- <br />mitted to do seaZing work. <br />C. COLOR SELECTION: <br />Water repellant material shall be transparent and free from <br />permanent color, and shall result in no pronounced change in <br />color from natural color of existing masonry and stone walls. <br />D. PRODUCT HANDLING: <br />Water repellant material shall be delivered to the site in <br />sealed containers, with the manufacturer`s name and trademark <br />clearly indicated thereon. Each shipment of water xepellant <br />material shall be accompanied by a statement of râ–ºanufacturer <br />certifying that it complies with Federal or American St-andard <br />Specifications. <br />E. MATERIALS: <br />All sealing materials shall be applied according to manufacturer's <br />printed directions. <br />1. Water Repellant Silicone: Shall be "Pecora P-55 Colorless <br />Silicone 47ater Repellent Water Ease Chemical" or equal quality <br />material approved by the Engineer before application. <br />F. PREPARATION OF SURFACE: <br />The Contractor will not be permitted to apply the water <br />repellant silicon coating until the exterior walls have been <br />thoroughly cleaned by the Hi-Pressure Water Cleaninq Method, <br />and aZl joints, structural cracks, and exter.ior openings have <br />been cleaned and caulked, and all exterior wall surface and <br />caulking have dried according to specifications relating to <br />these items. <br />TS-2 <br />