b"either on the nailsthe bottom of the plywood or as free water in ah oncatcbasin b the sample, the test isa elowdeemedfailure. So how did our samples perform? With regard tospray test, all but one of theles passed.we prethesamp As viouslyicated,tests were performed onsample, so these ind twoeachresults were very promising b all of the products passed the test at least onecausece and most passed both times. The nail sealability test was adifferent matter. The first problem we far counteredre somethe en was aaction ofof the materials tosilicone sealant. The material softened and wrinkled aAs previously reported, afterwater bit.the excess water and opened with aknife. To pass the test the sample must sharp have no sign of any liquid wateron specimen underside or top of p wetnesslywood or visible det of the specimen. erioration Insecond test the samples are mounted to asquare piece of the12 inch 3/8 inch plywood. N 1.25 inch roofing nails are driven into the,to two ext, twospecimen one inches apartthe head about 1 inch above the sur This gap is abwith/4face.out shi glewhybottomless the thickness of an and isthe gap is left. Next, aone gallon cansealed to the sample with silicon sealant and isto cure. isallowed /1 ,After cure, the can is filled with five inches of water and left at are temperatuContinued on15 ~ ofF. for aof three days. Ifwater appearsrspecimen,page 40periodanyunde the ZrJ.DCJ11Suppliesforfhe lowr bo LetContractors Roofing Wildcof Roofing Supply iscost producer of supply items for professional roofing conlracfors.our buying power SUPPLY{OMYput money to you ttom line. PAN ' Priced fromPriced fromRs TARPSKNIVESA e}t~$3.00$2.49~ ROLLERSi396.00 HAMMERS Priced fromGLOVES $13.10'& HATCHETS Priced fromPriced from ,.$7.99$.46 TAPESKNEE PADS Priced fromPriced fromBROOMS $6.83$9.27Priced from Quality Products$6.54 At EverydaySHOP ONLINE: www.wildcatsupply com .Competitive PricesCALL TODAYAFREE CATALOG FOR 11~ ~~~ II866-419-0508 1~VISA"