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Vent Pipes After installing the base sheet, position a piece of smooth Flintlastic membrane and mark the dimensions of the vents. Cut a hole corresponding

Vent pipe detail, hot asphalt applications

to the pipe size so that a snug fit is achieved. The membrane piece must be large enough to extend a minimum of 4" beyond the outside edge of the vent flange in all directions. Secure the membrane strip using hot asphalt or SBS modified bitumen flashing adhesive and press into place. Install the vent pipe collar, properly fastened. Install the Flintlastic SBS membrane. Use modified bitumen flashing adhesive to seal the base of the vent pipe where the field membrane ends.

Alternate detail, lead pipe flashing

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