b'APPLROOFI.NG YING OVER INSULATIONformsDeck very attractiveinterior ceiling-asandwich BOARDprovidingroofing,roof i deck,vaporharrier andceiling. DECK TherecentF HA I approvalaIo wing asphaltto shinglesbe naileddirectlyover insulatingroofdeck meansthat roofing contractorscanexpecfmorejobsof thistype. Thereisareason Ahove:Workman, doubly careful in walking over joists and in forthis .handling :fiber-hoard, installsanew roof deckpanel. Care must he exercised to keep the hoards unsoiled. Photos courtesy lnsulite. Moreinsulatingroo:fdeckisbeingtion,vaporbarrierandprefinishedcable to all roof decks using insulating used today due to the tremendous in ceiling,it isimportant that exteriorfiber boards in their fabrication. creasein the popularity of theopenroofingmaterals be properly appliedAssoonas possibleafter installabeam style o.f design.overthedecktoprovidecompletetion of the roof deck, it should be covTheroofing contractorcomes intoweatherprotection.ered with roofing- or at least with the the picture when the carpenter com Thesuggestionshereforapplica underlayment of waterproof paper or pletesapplyingtheroofdeckslabsti ofbothasphaltshinglesandfeltto help protect it until the roofing on overtheexposedbeams.Whilethebuilt-uproofing applyspecificallytois completed.Ifrain falls beforethe roof deck provides the four functionsInsuliteRoofDeck,althoughtheseroofcoverisapplied,theroofdeck of structural decking, efficient insula- suggestionsare alsogenerallyappli- surface shouldbe allowedtodry out 9Fiberboardroofdeckshavetheirproblemsforroofingcontractors. eThis article shows howtoavoid some of the p itfa!ls wherethe covering isfelt or shingle. eWhetherbuilt-uproofingorshinglesareused, deck must be covered the same day. eRoofersshouldinspectundersideofdeckbeforeapplyingroofingtocheckinstallation. 8OCTOBER1959'