b'____.::_.::-===-==-=-_ ::.:.=:.-=-.::-==- _ _ _____ ___ ___ _ _ _ ____ Aft. ec h n i r a l A d , i s e r _ 0\\,MRCA Technical Advice Helps Mem.bers Succeed byLacosse, GAE Bob One of the advantages of being aof MRCA is the opportunity for you to contact the MRCA office for member problemquesassistance in resolving ayou have when applying a low-sloped or steep roof. Also. many other tions can be an involving the roof assemblies pertaining to application. materials, decks, etc. swered Whateversituation is, such as abeing held up due to where ashould be applied, buildthejobcertain material ing code restrictions or general information on assemblies. materials, deck and application procedures, answers will be supplied to you. Also, much literature and brochures are available from MRCA to solve aIf MRCA does not have the problem. they know one you want,where to find it. For example, recently arted the MRCA office advising that he is bidding aject that MRCA membe contac prospecifies one inch polyisocyanurate roof ins and two layers of Type VI felt and amembrane on ulationbuilt-up top.He thinks that there should be anotherbetween the BUR and the polyisocyanurateto layerboardprevent blistering, but needs confirmation (preferably an articleother written documentation). or This member is correct and he was sent the latest printing of the National Roofing Contractors Association (NRCA) Bulletin No. 9htitle, NRCA Statement on Polyisocyanurate, Polyurethane and Phenolic Foam wit the Roof Insulations. In Bulletin No. 9 it states: "In order to minimize potential b ster formation between the top facer sheet of insulation and the built-up roofliing membrane, minimize localized crushing ofinsulation and minimize facer delamination.NRCA recom-. the mends the following procedure be followed: foamthin Over the top surface of polyisocyanurate, polyurethane, of phenolicinsulation, alayer of wood fibe, boardlation,board insulation or glass fiber board in should be in lled staggering the insu perlitesulationsta joints from the layer below.The built-up roofing membrane should then be applied as specified by the designer." Ifto assist in resolving problems andtions onMRCA circulates this information to its necessary,ques roofing, tec lchair of the MRCA Technical &Committee. hnica advisers andResearch nationally-renownedconsultant and Bob Lacosse, GAE, is aroofMRCA:Ssenior technical adviser. 1999 Foundation Benefactors and Patrons The MRCA wishes to thank the following MRCA Foundation Benefactors,James C. Mansfield,ames Mansfield &Company, L IJ Sonsyons,ll. who pledged $5,000 to the foundation in 1998:Jay Refieuna, Mansfield Roofing andMetal,Ill. SheetInc., Lyons. David Grass, Firestone Building Products Company, Carmel, Ind.Jim Gentry, Kirberg Roofing Inc., St Louis John D. Drew, Mid-West Roofing Company, Mason City, Iowa The MRCA also extends its thanks to the following F Patrons,John D. Stephenson, Stephenson Roofing Company, oundation the who pledged $1,000 per year fornext five years to the MRCA Foun Maryland Heights. Mo. dation in.Kurt Baumgartner, Martin Roofing Company, Inc., Wichita, 1998 Kan. Clifford Johnson, Empire Roofing &ion Co. Inc., Tulsa, Okla.L.B. Morris, Sellers &rquis Roofing Company, Kansas City, Mo. Insulat MaDavid J. Tilsen,lsen R Company, I Madison, Wis.Michael J. Dalsin, M JCompany, Inc.,Falls, STi oofingnc.,DalsinSioux.D. Dennis R. Runyan, Dryspace Inc., Cedar Rapids,Michael Pettigrew, P &Inc.,Wayne, Ind. IowaettigrewSons,Fort Douglas Richardson, S Commercial Roofs Inc., DallasTed Evans, The Milbrand Roofing Company, Warren, Mich. un Ed Williams, F Roofing Company, Inc.,mont, Oh Raymond L. Haselton, Union Roofing Company, Inc., Chenoa, remontFre ioIll. Harlan L. Hanson, Central States Roofing Company, Ames, IowaRobert F. Huntington, AAA Roofing Company, Inc., Indianapolis, Ind. James A. Barr, Barr R Company, Abilene, T James Brosseau, B &Roofing Inc., Romeoville, Ill. oofingexasennettBrosseau James Eckstein, Jr., CA Eckstein Inc., CincinnatiAnthony M. Spigarelli, Centr Roofing Company, M lis~ , alinneapoJames F. Karczewski, F J ARoofing Corp., Carol Christiansen Stream, Ill. 10'