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}-'. �(.1. <br />R-30 CATHEDRAL BA7T <br />s�iz�- THICK FOR <br />CATHEDRAL CEILINGS <br />Certaln7eed R•30 Cathedral Ceil• <br />ing Batt has been speclllcaily de- <br />signed a18�/i'to pravide a lull <br />R-30 value in 2" x 10" construa- <br />tion while allawing air space for <br />ventllation, <br />8uilders today are meeting the <br />demands of their homebuyinp cus- <br />tomer by designing antl building <br />homes that are energy efticient. <br />The Model C-nergy Code in most <br />areas of the country requires a <br />minimum af R•30 in the ceiling. <br />With more homes being 6uilt with <br />cathedral ceilings, it became difti- <br />cult to insulate the vaul[ed ceilings <br />v+ithout either compressi��g the <br />insula:ion or adding an additionai <br />fozm board insulation to the <br />construction. The R-30 Cathedral <br />6att at 8Y�' was designed to meet <br />this thermal performance require• <br />ment while allowing an air space <br />at the root deck for ventilation. <br />This ventilation space eliminates <br />the need for adtlitional roof line <br />baffles. The Cathedral Ceiling 8att <br />is available in 48" batt lengths for <br />fast efficient installation. <br />Product Oescription <br />CertainTeed Cathedral Ceiling eatts <br />are tlesigned tor easy installation in <br />vaulted ceilinys. Produced wi[h a <br />kraft facing to provide a vapor <br />retartler as well as nailing flanges. <br />�4�ith a designed thickness oi <br />o'. _�". Cathedrsl ceilinn d�rs :;�III <br />Applicahle Standards <br />R-30 Cathetlral Batts �omply with <br />ASTM C 665 whiCh repldces <br />HH-I-521F. Thermal performance <br />is tletsrminetl by ASTM C 653 antl <br />ASTM C 578. Kratt-facetl prod- <br />uct is classilied Type II untler <br />ASTM C 665. <br />Vapor Barriers <br />Kraft•taced insulation h�s a vapor <br />permeance of 1 as tested in accord• <br />ance with ASTM E 96. In most <br />areas, vapor retarders must he <br />applied to ihe warm-in-winter side <br />of the ceiliny to avoid moisture <br />condensation. Cathedral ceilings <br />can be prone ta moisture prob- <br />lems. CertainTeed's Cathedrai <br />Ceiling Batt at 8Yz" is designed <br />to allow ventilation at the ro0t line <br />as weli as incorpnrating a vapor <br />barrier. <br />Instailation <br />Cathedral Ceiling Batts are de- <br />signed to tit snugly between the <br />ceiling rafters. The designed <br />thiCkness ot 8�fi" will allow free <br />air movement behveen the (iber <br />glass insulation and the roof deck. <br />Batts should be stapled so they <br />remain flush with the lower fate <br />of the rafters. <br />For (urther intarmation contaCt; <br />CeHalnTeed <br />Teehnical Services �eptarlmenf, <br />Residential Insulation <br />Valley Forge, PA 19482 <br />215•347•7677 <br />