WP termination — metal angle flashing

316L stainless steel termination bars are flat or angle section metal bars fixed along the top of the hob upstand to clamp and protect the waterproofing membrane termination edge. The membrane is taken up the face of the hob and turned over the top, and the termination bar is fixed over the membrane at the top of the hob with 316 stainless screws at typically 150mm centres. A compatible sealant is applied along the top edge of the termination bar to prevent water from tracking back under the bar and membrane. 316L stainless is specified for coastal and high-exposure locations — aluminium termination bars are used for inland locations. Termination bars are available as extruded aluminium or flat stainless bar from metal suppliers and building hardware suppliers — purpose-made termination profiles may also be available from waterproofing accessory suppliers. Confirm that the top of the bar is at or above the required NCC hob height above the waterproofed finished floor. All fixings must be 316 stainless. TODO: owner confirm — confirm preferred stainless termination bar profile and fixing centres before specifying.

Extruded aluminium termination bars and angle flashings are used at the top of the hob upstand to clamp and protect the waterproofing membrane termination at inland, non-coastal balcony locations. Aluminium termination bars are available from aluminium extrusion suppliers and building hardware suppliers as flat bar, angle or purpose-designed profiles. The membrane is taken up and over the hob and the bar is fixed over the membrane termination with 316 stainless screws (all fixings must be 316 stainless even with aluminium profiles — to prevent corrosion at the fixing point). A compatible sealant is applied along the top edge of the bar. Anodised or powder-coated finish — confirm colour match with the balcony door frame or sill trim. Not suitable for coastal or marine-influenced locations — specify 316L stainless termination bars for coastal applications. Confirm profile dimensions suit the specific hob geometry. TODO: owner confirm — confirm preferred aluminium termination bar profile and supplier.

Proprietary waterproofing membrane termination profiles are purpose-designed extruded sections that provide an engineered termination detail at the top of the hob upstand. Unlike a simple flat bar, proprietary profiles typically include an integral sealant recess channel on the back leg (to lock in the top of the membrane), a screw fixing flange with pre-punched or pre-drilled fixing holes, and a drip nose on the front leg to prevent water tracking under the profile. These purpose-designed features provide a more reliable membrane termination than a simple flat bar, and reduce the risk of membrane peel or delamination at the top of the hob. Available from waterproofing accessory suppliers and specialised flashing manufacturers — confirm material grade (aluminium for inland, stainless 316 for coastal), Australian availability, compatibility with the specific membrane system and NCC hob height compliance before specifying. All fixings must be 316 stainless regardless of profile material. TODO: owner confirm — confirm specific proprietary profile, Australian supplier and material grade before specifying.