Balustrade wall with torch applied Sheet Membrane:
AschamSchool, Edgecliff 2027
Waterproofer: Wrimco Waterproofing Contractor
Photo showing Wrimco SBS Granules waterproof membrane torch applied to the top of a 500mm wide balustrade wall which was leaking at the front of Wallis House.
Note how the 4mm Wrimco SBS was applied lengthwise instead of the normal crosswise in 1m strips in order to achieve a good appearance which was further enhanced by butting the three sheets so there were no 3mm overlaps.
The outer edge was cut 5mm below the lip of the balustrade to provide a drip.
The second balcony was complicated by the balustrade supports. After priming with Wrimco SBS primer and torching 10mm strips around the balustrade supports, three sheets were cut to size, put into position and square sections cut out before sliding in and torch applying. 25 x 25 squares were carefully cut out for the balustrade supports and then torched in place (all without overlaps and guaranteed to be 100% watertight). A key factor was to unroll the 8m x 1m material and allow it to relax on the adjacent bitumen driveway for 15-20 minutes before cutting to size.
The final result after painting with the waterproofing unable to be noticed.