OUTSIDE CORNER
ONE WAY VENT INSTALLATION Mineral Cap Sheet
Membrane torched to substrate
One Way Roof Vent
Fillet
Substrate
WPM 116 Basesheet
One Way Roof Vent Typical details do not indicate number of layers required
Mineral Cap Sheet
Sealant
Vented Base Sheet
STEP 1
Screw Fixings
STEP 2
PIPE FLASHING Flashing prior to installation
Parallel cuts
Pipe
Aerators
Flashing metal sleeve Membrane flashing torched in place
Top membrane layer cut to fit around pipe
Substrate
Porous Concrete Decking Partial bonding through vapour equalisation layer
Vapour Membranes WPM 116 base sheet
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