www.rcabc.org  l  23 TECHNICAL UPDATE Your source for roofing products in British Columbia. ∙ Commercial Roofing & Accessories ∙ Air & Vapour Barriers ∙ Waterproofing ∙ Metal Cladding ∙ CT Board ∙ ISO Insulation ∙ Tapered ISO & EPS Packages ∙ Roof repair & maintenance supplies ∙ Roofing tools & equipment Call us for a quote! www.BrockWhite.ca Burnaby Surrey Langley Victoria Kelowna Prince George One specification I read wanted screws cut off if they penetrated the steel deck any more than 15 mm, a clear contradiction of most screw manufacturers’ specifications that state a minimum penetration of 19 mm (3/4”), to achieve the desired holding power. If you’d like assistance in developing exceptional specifications, call us. We’re happy to provide template wordings that will simplify your specifications so that you can provide clear, concise direction for construction. Learning Together Roofs now do more than simply keep the weather out; they protect the integrity of the whole building and serve as a key component in the entire enve- lope that controls the movement of air, moisture and sound in and out of the structure. And to do this, they need to stay where they’re built. The new BC Building Code provides guidance for meeting these challenges, and both the Design Authority and roofing contrac- tors can help each other learn how by collaborating and learning together. With practice, conversation and shared resources, together we’ll excel at speci- fying the work that turns great project designs into exceptional buildings. We’ve authored the book on great roofing design and construction stan- dards. Learn more about our RoofStar Guarantee Program at www.rcabc.org, or visit our Roofing Practices Manual at rpm.rcabc.org/. James Klassen is a RoofStar Technical Advisor and staff writer with the Roofing Contractors Association of British Columbia. As a keen proponent of vegetated roofs, James serves as a co-chair of the Green Roofing Information Think-tank (GRiT) and contributes to education and policy develop- ment for sustainable ‘green roof’ design.  He is an experienced roofing estimator, a former Occupational Health and Safety professional and independent Insurance Claims Adjuster, and has extensive experience managing facilities and transportation for a large private school in British Columbia’s Fraser Valley.