b'TECHNICAL & RESEARCH COMMITTEEPositioning upper aluminumView of stiffened aluminum load frame onto test specimen test frame and secured insulation board test specimenResearch Committee agreed upon a scope of workDirect tension strength significantly increased for the testing. Key details and findings of the testas foam adhesive ribbon spacing decreased, program included: for both the polymer coated glass fiber and Evaluating the polyisocyanurate insulationcellulosic felt faced insulation specimens. adhesive bond strength at agreed uponThis strong correlation confirms and helps spacings of 6, 12, and 18 inches.to quantify industry knowledge and practice Sourcing tested materials from a single roofingthat higher adhered insulation board uplift materials manufacturer; which were providedresistance is achievable with closer foam by an MRCA member. adhesive spacings.Continued on page 8Testing eighteen 4-foot square specimens; three each at the six, twelve, and eighteen-inch spacings with the two different insulation facerExperienced Counsel and types.Fabricating test specimens by adhering 2-inchDetermined Professionalsthick insulation boards to plywood backers that were fabricated with special fasteners that allowed their attachment to the reaction frameAttorneys while also being removable. After allowing the adhesive between insulation boards and OSHA Defense You Can plywood backer to cure, the insulation board Labor & Employment Rely On for facers were then mated and adhered to eachLaw Effective other at the pre-determined ribbon spacings.Construction LawThe average measured direct tension Business Law Representationstrengths for full size polymer coated glass Litigationfiber faced specimens were 674, 497, and Workers Comp DefenseStephen A. Watring342 psf at ribbon spacings of 6, 12, and 18Gary W. Aumanin., respectively. Average measured directWilliam H. Barney, IIItension strengths for cellulosic felt facedRichard L. Carr, Jr.specimens for ribbon spacings were 614, 379,Donald B. Rineerand 307 psf, for spacings of 6, 12, and 18Amy C. Mitchellinches respectively. The test results were fairlyDouglas S. Jenksuniform as the computed coefficient of variationAbigail K. Whitewas 7 percent and 13 percent for polymerDavid M. Rickertcoated glass fiber faced specimens and937-223-6003 Matthew J. Bakotacellulosic felt faced specimens, respectively.amfdayton.comwww.mrca.orgMidwest Roofer 7'