TPE Corner Outlets With Perforated Flange

Wallbarn supplies a pre-cast corner fitting for drainage holes on roofs, balconies and terraces which is situated between the horizontal deck and the parapet wall or upstand. Contractors need to be sure that the area around these holes, which will have to contend with a great deal of water run-off, is completely waterproofed and protected from puncture damage and stresses caused by building movement.
http://www.wallbarn.com/products/roof-outlets-vents/roof-outlets-collars/tpe/tpe-corner-outlets-with-perforated-flange/