Creating a Watertight Shower Drain


Walk in tiled showers have become a very popular bathroom feature, but with such extreme moisture in one area, how can designers ensure they are completely watertight?

Allproof Industries have developed a wide range of products, providing high-quality NZ made drainage systems that perfectly integrate with waterproofing systems. These drainage products have been developed by Allproof’s in-house design and development team to provide the correct capacity, improved install process, maintenance and combine with other products in the Allproof catalogue and on the market. These features ensure excellent protection from leaks and high drainage performance.

The most popular drainage and waterproofing system is Allproof’s Vision Shower Channel Series. This product works much like a point drain, but can be set up as a threshold channel or flush against a wall. This product provides a highly sought after aesthetic finish with off-the-shelf sizes and custom made lengths available, all with a choice of five grates.

The system utilises a specially designed VF80 flange that is recessed flush into the base of a channel created on site. The waterproofing membrane is then dressed into the recess and onto the flange, completely tanking the wet area.

The flange has been designed to provide a high-quality surface for bonding the waterproof membrane and ensures that all subsurface moisture collected by the waterproof membrane is directed into the outlet. The stainless steel channel is set into the recess, leveled and secured using a porous compound before being tiled up against with a bead of silicon applied between the tile and channel edge.

Alternatively Allproof also offer the Elegance series, which is a stainless steel point drain available with 8 different grate designs or a tile insert 'Invisible' grate. These are available as tile waste kits off the shelf with a Leak Control flange or Cyclone Flange and floor waste gully. The point drain can be located in any desired location, usually in the centre of the walk in shower under the shower head.

Like the Vision Series the Leak Control flange is rebated into the floor with a fall being screeded towards it, the waterproof membrane is then applied to the flange surface creating a water tight area. The tiles are then installed and spigot adjusted or cut to the correct height supporting the Elegance grate with a small bead of silicon applied around it.