Document Gzzz7ogmzEzJr5vDaed3mJnYY

PLAINTIFF'S EXHIBIT / P^O l%\ Ardnore -; 1 Sptnbr 25*15#7 Paoli Laboratory Mr. C. E. Abbey BESTVALL AC0D5TTCAL PLASTER C. Q Shuttlevorth - ev cei Arduor* Advertising Hr* Watt and I have gone over the directions to be printed on the for the new Machine application acoustical plaster and have revised then to suit the Material now being tested. Attached you will find several copies of this revised direction. Y Enclosure. ** ( SGP 0018701 Liptember 25, 1?57 HES1WAIL ACOUSTICAL PLASTER (NATORAi* WHITE ) USE This is a will mixed product to be mixed with clean water only for machine or trowel application over gypsum basecoat plasters, monolithic concrete and other surfaces which are firm, clean and free of efflorescence or water soluble substances. Qppsum basecoats should be half dry to dry. Concrete should be dry. MIXING Be sure equipment and tools are clean. Machine mix at least 5 minutes. If hand mixed hoe until thoroughly mixed. APPLICATION SPRAY APPLICATION - For first coat use 70 * 80 quarts water per UO lb. bag. Apply 3/8" thick. Level with darby and allow to dry before applying finish coat. For finish coat use 5 to 10 additional quarts water per bag depending on the texture desired. When applied over low suction bases, the material should be applied in three applications, the first application furnishing tbs suction for sub sequent coats. Ary large fissures in the base coat should be filled and leveled before applying finish coat. HAND APPLICATION - Use 60 to 70 quarts water per UO lb* bag for both basecoat and finish coat. Apply basecoat 3/8" thick, allow to dry, then apply finish coat 1/8* thick. Trowel finish may be smooth troweled, floated, stippled or darbied after it has taken-up sufficiently. PRECAUTICfJS Provide adequate heat and ventilation in slow drying weather. Avoid too rapid drying to minimize excessive cracking. Use only on ceilings and other areas which are not subject to abrasion or free moisture. Cover any exposed metal with rust resistant paint before applying Bestwall Acoustical plaster. *x* CGSjcw i SGP 0018702 x*y m-1957 Paoli Laboratory BSSTVALL ACOUSTICAL PLASTER ------- (Natural WHITE)-------- USE This is a mill mixed product to be adzed with clean water only for machine or trowel application over gypsum basecoat plasters, monolithic concrete and other surfaces which are firm, clean and free of efflorescence or water soluble substances* cypsun basecoats should be half dry to dry. Concrete should be dry* KUCENQ Be sure equipment and tools are clean. Machine adz a least 5 minutes. If hewrf mixed hoe until thoroughly adzed. faAPPLICATION 70" SPRAT APPLICATION - For first coat u^a 60 PO quarts water par 1*0 lb. bag. Apply 3/8" thick. Level with darby and allow to dry before applying finish coat. For finish coat use 5 to 10 additional quarts water per bag depending an the tezture desired. -- Mien applied over low suction bemta* jthe material most be applied in three applicar_''U-o.t- tlons, the first application "furnishing the suction for subsequent costs. /Anylarge fissures in the first coat should bo filled and leveled before applying finish coat* tor, 1b HAND APPLICATION - Use # quarts water per 1*0 lb* bag for both basecoat and finish coat. Ipply basecoat 3/8" thick, allow to dry, than apply finish coat 1/8" thick. Trowel finish may be smooth troweled, floated, stippled or darbied after it has taken~up sufficiently. P/dL CAUTIONS Provide adequate heat and ventilation in slow drying weather. Avoid too rapid drying to minimize excessive cracking. Use only on ceilings and other areas which are not subject to abrasion or free moisture* Cover any exposed metal with rust resistant paint before applying Bestwall Acoustical plaster* *** JHWtcw SGp 0018703