b'BUILDING CODEseal-ability test and complies with ASTM D1970andCSAA123.22.Applyingthe underlayment over the eave membrane will prevent the shingles from bonding and save the deck for decades to come.A BETTER WAYA roof is a complex assembly that too few peopleappreciate.Ittakesaprofessional roofertoknowandmastertheircraft, andtounderstandandapplythecodes and standards that guide design, materials and installation. While anyone can hold a hammer, it takes a professional roofer to expertly install shingle roofing.Some ways are better than others when itcomestoroofing,andwevewritten the book on best practices and methods thatstandthetestoftime.Formore aboutourstandardsandwhatweoffer forourmembersandthewiderroofing Figure 11 industry,visitusonlineatrcabc.organd see our online Roofing Practices Manual atrpm.rcabc.org/index.php.References 1 www2.gov.bc.ca/assets/gov/farming-natural- resources-and-industry/construction-industry/building-codes-and-standards/revisions-and-mo/bcbc_2024.pdf2 merriam-webster.com 3 Fiberglass-reinforced asphalt shingles are thepredominant water-shedding (sloped roof) material in Canada and are the focus of this article, but other primary roof materials behave similarly to DONT OVERLOAD4 what is described below.In this article, the term shingle is shorthand andWE CAN HELP CONDUCTimplies a shingle manufactured with asphalt as the primary waterproofing constituent.YOUR SUCCESS! 5 Many homes are now designed with short eaves,because of shallow lot line setbacks and because the market demands more habitable space. If the eaves on a dwelling are less than 900 mm (measured up the slope of the roof, from the eave edge to an imaginary line extending upward from the inside face of an exterior wallsee Figure 3), then eave protection is required; this applies to all Part 9 structures regardless of occupancy. Given current design trends in detached single-family dwellings, it is probable that many roofs require eave protection solely on this issue alone.6 free.bcpublications.ca/civix/document/id/public/ bcbc2018/bcbc_2018pre7 Note that some locations listed in the climate zonetables cover multiple climate zones.8 A drip edge is roofer slang for the entire edgemetal flashing, but technically speaking, a drip edge is the kick-out at the bottom edge of the Robert Thompson, Senior Vice Presidentflashing. There are specific dimensions and angles robertt@mediaedge.ca 647-494-4229 for this edge. To read more about it, check out Article 13.2.2.1. and the illustrations there.22 lROOFINGBClSUMMER 2024'