b'BUILDING CODEbefore.So,whileArticle9.26.5.1.is important, Article 9.26.1.2. is even more important (Figure 7).The intent of Section 9.26. (among other things) is to minimize the ingress ofwaterduetoicedamminginto buildingassemblies,andthisintent isaccomplishedbyconformingto theremainderofSection9.26.,or bycomplyingwithPart5.Ignoring for now the reference to Part 5, notice whatcomesrightafterSubsection Figure 6 9.26.1.Article9.26.1.3.,Alternative InstallationMethods.Andwhatdoes than20years.LaminatedshinglescanThe answer to these questions isntArticle 9.26.1.3. say? It says that when be used on low slopes, but they must bein Article 9.26.8.4. It is actually near theSection9.26.doesntaddresscertain installed over a fully adhered underlay- beginning of Section 9.26., but you mayapplication issues (like architectural lami-ment and installation must follow (whenhave missed it. nated shingles), the reader can refer to applicable) the manufacturers publishedthe alternate methods described in CSA low-slopenailingandcementingLAMINATED SHINGLES A123.51(Reaffirmed2018),Asphalt instructions. But that would contradictAND LOW SLOPES shingle application on roof slopes 1:6 therequirementsinArticle9.26.8.4.,Remember how we zeroed in on Articleand steeper.wouldnt it (Figure 6)? 9.26.5.1. because of the title, RequiredTheCSAA123.51standardwas Well, yes, but also no. The require- eave protection, which seemed to holdwrittentoaddresstheinstallationof mentsinArticle9.26.8.4.areactuallyso much promise? Its easy to fall intoall types of asphalt shingles, including legacylanguageforlow-slopeshinglesthat trap and go straight for the answer,laminated shingles. So, where cementing that havent been manufactured and soldforgetting that everything in the Buildingthetabsofshinglesisrequired,the inCanadainaverylongtime.WhileCode literally builds on what was saidCSA standard permits only spots of this is interesting, it is also concerning. Ifyourearooferinstallinglaminated shinglesonalow-sloperoofandthe localinspector(AuthorityHaving Jurisdiction) tells you the shingles have to be cemented together because thats what Article 9.26.8.4. requires, but the shingle manufacturer says their warranty will be voidif you do, where doyou turn? This very issue came up a number ofyearsagoforanRCABCmember contractor,inthemiddleofamulti-building project where several roofs had already been completed.Figure 7NOWHIRING!P: 250-492-7985F: 250-492-7781E: team@interiorroong.comwww.interiorroong.com18 lROOFINGBClSUMMER 2024'