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  • Never point the torch at low flashings where there is an overhang and flame could get up under the counterflashing (such as around skylights or prefabricated curbs with fiberboard sidewall insulation).

  • Torching equipment is made for roofing application only and should not be used for drying out a roof or as a preheater torch.

  • Never apply modified bitumen products directly over exposed conduits or pipes laying on the roof deck.

  • LP gas is heavier than air. Do not work in an enclosed area where gas can accumulate.

  • Do not rest an operating torch directly on the membrane. There is danger of fire and danger of damaging the membrane.

  • Don’t lay an operating torch on an open penetration on the roof. If the penetration is part of an air intake system, the flame could be sucked into the building.

Additional Hot Asphalt Considerations

  • Maintain kettle and tanker temperatures less than 25°F below the actual flash point of the material used.

  • NEVER heat materials to or above the actual flash point.

  • Don’t maintain asphalt at high temperatures for prolonged periods of time.

  • Don’t allow asphalt to stand in luggers for long periods of times.

  • Use insulated hot bitumen transport lines to help maintain acceptable bitumen temperature at point of application.

  • Circulate bitumen while heating.

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