b"ROOF PERFORMANCEPreventative roof maintenanceHow to maximize long-term roof performanceBy/par Wendy FraserEntretien prventif de votre toitureComment maximiser la longvit de votre toitA system represents a significant portion of theP artie importante de lenveloppe du btiment, la toiture a roofing entire building enclosure and has a great influence onune influence marque sur les fonctions essentielles : critical building functions, including energy efficiency,efficacitnergtique,confortdesoccupantset occupant comfort and protection of building contents. There- protectionducontenu.Parconsquent,toutsystmede fore, any roofing system must maintain optimum performancecouverture doit garder des performances optimales sur toute throughout its expected service life.sa dure de vie. On croittort quune fois la toiture pose, il ny a rien One misconception is that once a roof has been installed,dautrefaire et que les garanties sont l pour vous protger. no further action is required and that warranties will provideCertes, les garanties peuvent tre utiles en cas de matriaux remedy for any performance problems that occur. Althoughdfectueux ou de mauvaises techniques de pose, mais le warrantiesmaybeusefulinprotectingabuildingownerpropritaire a quand mme lobligation dentretenir rgulire-from loss due to defective materials or improper installationment son toit. Presque toutes les garanties sannulent si le techniques,thebuildingownerstillhasanobligationtotoit na pas t entretenu conformment aux instructions. properly maintain the roof. Almost all warranties available inLa dure vie dun toitthe industry specify that they may be voided in the event ofNombre de facteurs peuvent compromettre la longvit dun failure to properly maintain the roof in accordance with thesystme de couverture, notamment :manufacturer's recommendations.Lexposition aux lments : rayonnement ultraviolet, vent, pluie, neige, temprature, pollution de lair et Roof performance missions industrielles ; Les mouvements structuraux, tels que le tassement,Therearemanyfactorsthatmayaffectthelong-term performance of a roofing system, including: les phnomnes sismiques, et la dilatation et laExposure to environmental elements, including ultravioletcontraction thermiquesLa croissance biologique : vgtation, moisissuresradiation, wind, rain, snow, temperature, air pollution and et algues ;industrial emissions; La conception du systme de couverture, notammentStructural movement such as settlement, seismiclcoulement des eaux, les solins, les dfauts structurelsmovement, and thermal expansion and contraction; et autres ;Biological growth such as vegetation, fungus and algae; Les dfauts de fabrication, formulation ou production mproper or inadequate design of the roof system,des matriaux ;I Labsence dun entretien appropri, lutilisation deincluding improper drainage, flashings, structural deficiencies, etc.; produits non compatibles et linfiltration continue deauou de condensation ;Manufacturing defects, such as materials formulationLes changements dutilisation et doccupation, par rapport or fabrication;ce pour quoi le btiment avait t conulorigine, Lack of proper maintenance, including use of comme laugmentation de lhumidit intrieure ; incompatible materials and ongoing water infiltration La circulation sur le toit, les abus ou le vandalisme. or condensation infiltration; Lexpositioncertainesconditionsenvironnementales Changes to the use and occupancy of the building otherentranedesmodificationsdespropritsphysiquesdes matriaux et affecte ltanchit de la couverture. Lentretien than those for which it was designed and intended, such asprventif sert donccorriger, pendant quil est encore temps, increase in interior humidity; and la dtrioration ou les dfauts du toit. La raison dtre de tout Rooftop traffic, abuse or vandalism.entretien prventif est de rduire les causes dacclration Exposure to varying environmental conditions will result induvieillissement normalde la couverture en prenant des changes to the physical properties of the roofing componentsmesures pour prolonger sa dure de vie restante.22 ROOFING CANADA SPRING/SUMMER 2020"