b'Lightweight Insulating . Continued from page 11 Planandcoordinatethedecknize the advantagesofIh tlize for awhile thedeckSummation ig tweigh projectroof castingand theroofingmem insulatingcellularconcreteroofisbeingcast.T insulatingcon Lightweightinsu ting cellular helabrane installation with regard todecks a positive benefits thesecrete roof deck a licator will out concrete is aproduct than nd thepp different crew size, reasonablecellu r concreteroofdeckscanproduce afing membrane crewexpanded aggregate concrete productionla roo even times, andschedulingof thesehaveontheir business.However,(greater than 100 squares per d ).though bo are used in roof day theck activities.some contractors believe thattheyThe time con cutting and fit applications.ightlating ifsumingLightwe insu Specifications shoube writtenlosetheinsulationportionofthetingofrigidinsulationboard, incellular concrete meets all the criteId to include cellular concrete with aroofing contrac they will lose theirreality,daily productionriaanl roof deck insulat,reduces theofidea ting m 200psicompressivemarkupprofit on these projects.ofmembranein lationfor themate al.Cellularconcreteroof inimumandstal ristrength a fiber reinforcement.From a practicals nt, ar ing contractor and in thedecksp positiveslope-tondtandpoi oof creasesrovide Roofingmembranescanbelightweight insulating cellular con risk of days lost to poor weather.drain, abase for the roofing solid specified forf "in thedry"crete roof deck system provides theIn short, the roofingr r\'smemb andfire, seismic,and astercont acto rane, installation ifare high prob contractor with the opportunity to doprofit margin willincreaseduetowind u resistance. thereplift abilities of rain.what he does best and most prof greater a moree producndfficient Act quickly in case of rain.eritably-insta the roofing membranetion. The roofing membrane appli References Cov ll the deck and utilize shopvacs if itandtheperipheraldetailsthatcation can begin adays after the1. Fricklas, R.L., and Griffin, C. few is appropriate.accompanythesesystems.Mostcellular concrete roof deck is cast.W., TheofRoof ManualLow-Slope importantly, the building will be "inFurthermore, the roof deck will drainSystems,ThirdEdition,1996, Roofing Contractorsthe dry" s positively.ThisisnotalwaystheMcGraw-Hill,pp 70-74. ooner.New York. Many roofing contractors recog- The roofing contractor can mobi- case with rigid insulationContinuedpage 13 systems.on r-i[ine Quote, at: www.met-alde(;ksuppl-y,,com1601 EMIL LAN MEMBEB ;,J.7, eek~ppti.enm - S\'J"EEL OECK WNUF,.A:6\'11.JREOSTI!EL DECK ltl"~Tl\'l\'V\'l\'E:Mi,Ml)ER$\'.\' ~u.8'