b'CRCA Advisory BulletinTorch ApplicationGuideline to mitigate rooftop firesT he purpose of this guidelinetheserequirements,rooftopfiresthemostsusceptibleareasistoAlternate Materials materi- tractors while reducing the risk to is to promote awareness ascontinue to occur and it is recom- incorporateapicture-framingTherearealternatebuilding occupants.it relates to the possible riskmendedthatfurtherprecautionsor pre-flashing application thatals that can be used in conjunc- The opinions expressed herein are of rooftop fires during the appli- above the minimum fire code re- canbeutilizedwheninstallingtionwithorasareplacementthose of the CRCA National Technical cation of roof systems involvingquirements and existing safe workmodified bitumen membranes atfortorch-onmodifiedbitumen open flames. practices be undertaken. roof flashings, perimeters and pen- membranes.Flamelessapplica- Committee. This Advisory Bulletin is TheNationalFireCodeofetrations. A picture framing ortionutilizingproducts,suchascirculated for the purpose of bringing Canada (NFC) or the equivalentMitigation pre-flashing application utilizescold-applied or self-adhered prod- roofinginformationtotheattention provincialfirecode,whicheverThe use of an open-flame torchflameless products for the applica- ucts, have been developed for theof the reader. The data, commentary, has jurisdiction provides the mini- during the process of roofing in- tion of the base and cap sheets atinstallation of modified bitumenopinions and conclusions, if any, are mum requirements in NFC Divi- stallation presents an elevated riska minimum of 915 mm (3 ft) intomembranes. Some of these prod-sion B Section pertain- whencombustiblematerialsarethe field of the roof prior to instal- ucts can be installed in tempera- not intended to provide the reader with ing to the use of open flames orinvolved. lation of field membrane. tures as low as -10C (14 F). conclusivetechnicaladvice,andthe producing heat or sparks i.e. cut- Mosttorch-relatedrooftopIn addition to the eliminationSafetyshouldbeatthefore- reader should not act only on the roof-ting; welding; soldering; brazing;fires appear to originate at mem- oftorchingatmembraneflash- front of all construction activities.ing information contained in this Ad-grinding; adhesive bonding; roof- braneflashings,perimetersandings, perimeters and penetrations,CRCAs position on recommend- visory Bulletin without seeking specific ingoperations;thermalsprayingroofpenetrations.Theseareasthe use of open-flame torches toing the use of flameless products and thawing of pipes and materi- are more susceptible due to theapply roofing materials on build- at sensitive areas and on suscep- professional,engineeringorarchitec-als. In addition to these require- complexity of the details and anings and/or structures that consisttible materials will assist in the re- tural advice. Neither the CRCA nor ments, CRCA members undertakeincreased risk of fire being drawnof wood decks or wood substratesduction of potential fires causedany of its officers, directors, members specializedtorchsafetytrainingintothebuildingatjointsbe- shouldalsobeavoided.Woodby roofing activities. When com- or employees assumes any responsibil-thatidentifiesboththesafeusetween building materials and intosubstrates and decks, even whenbined with other safe work prac- ity for any of the roofing information of the roofing torch and special- interior spaces due to differencescoveredwithnon-combustibletices, the installation of flamelesscontainedhereinortheconsequences ized construction details to limitin pressure. material,remainsusceptibletoroof materials may contribute to the contact of the direct flame toOneoptiontomitigatethefire being drawn into the jointslowerinsurancecostsforbothof any interpretation which the reader combustible substrates. Even withoccurrenceofrooftopfiresatbetween materials. building owners and roofing con- may take from such information.12ONTARIO ROOFING NEWSISSUE 4 2020/21 THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ORN'