b'1000 Power &Light Bldg.,KansasCity, Missouri64705February-March,1972 BUILDINGSLOPEINTOEXISTINGROOFS ThefollowingarticlefromJohnBradford,MRCAdirector,Billings, Montana,shouldbeofinteresttoallofyou: "If youarenotshavingperliteinsulationtodevelopslopeinaroof ortoovercomeareasthatpondwater,youaremissingtheuseofanimportanttool. "TheyearsimmediatelyfollowingWorldWarIIwereusedtocatchup withbuildingprojectsthathadbeendelayedduringthewaryears.Many ofthebuildingsthatwereconstructedperhapsmostofthemweredesignedwithnoslope,fewdrains,if any,andagenerallackofinterest astotheeffectofpondedwateronbuilt-uproofing. "Theroofingmanufacturersfoundnofaultwitha structurethatwas notprovidedwithadequatedrainage.Indeed,theindustrywasalltoo anxioustoguaranteeitsmaterialsandworkmanshiponpuildingswhichtodayarerecognizedasdisastersfortheapplicationofabuilt-uproof. \'-__.,,11 Mostoftheroofsontheseflatdeckbuildingswhichwerebuiltin the1950\'sandearly1960\'sarenowbeyondthepointthatrepairscankeep themwatertight,andthetimeforreroofingishere.Asreputation-minded contractors,werealizethattoreplacetheroofingovertheflatdeckis justaskingformoretrouble.Theanswer,ofcourse,istoinstallslope inthedeck. 11 Severalmethodsareavailabletous,allofthemeffective,butnone quitesomade-to-orderastheshavedperlitesystem. "Forus,"theroofing2ontract.0:!.\'s,it is betterth.anplywoodand diminsionlumberbecausewedonotinvolveanothercontractortodothe work;weincreaseourowncontractwiththeowneranddoit ourselves. "Itisbetterthanusingfactoryfabricatedtapertilesbecausethe shavedperlitesystemisdesignedonthejobandchangescanbemadeas youproceed. "Andweallknowwhyit isbetterthanestablishingslopewithwet pouredinsulatingfill. "Thesystem,asfarasIcandetermine,waspioneeredbyanewmemberoftheMidwest,McLeesSheetMetalfromBozeman,Montana,andthe systemandtheprocedurewerepassedontorepresentativesoftheJohns,-_ManvilleCorp.andotherroofingcontractorsatameetinghereinBillings, ~aboutfiveyearsagobyJackMcLeesandhismen. Montana,'