All good waterproofing work could go to waste if there isn't a long-term waterproof seal on drain systems. In the past, the design of a floor drain that could be used in conjunction with bonded waterproofing membranes has frequently caused problems.
But a new generation of floor drain system is overcoming this long-standing weak point in the construction of surface assemblies in tiled floors. Using Schlüter-KERDI-DRAIN, installers can now incorporate a guaranteed drainage system into their bathroom work.
Trying to achieve such a waterproof seal has caused many people many problems for a long time. But technology has now been brought right up to date with the development of a floor drain system specially designed to solve this problem.
Schlüter-KERDI-DRAIN's upper assemblies incorporate an integrated bonding flange on the top surface, which provides a secure bond between the drain and the waterproofing membranes. The drain housings come with or without odour traps, and the system can connect to both horizontal and vertical pipework.
Schlüter-KERDI-DRAIN enables installers to offer a guaranteed waterproof connection on ceramic tile, natural stone, and other surface coatings.
Fitters in the past have experienced difficulties installing drainage systems on a timber substrate on the first floor - this is no problem now. Conventional methods have proved difficult and expensive in the past, because rigid surfaces over timber suffer from problems of movement which causes the tiles to crack and become debonded. But using Schlüter-KERDI-DRAIN with the Schlüter-DITRA waterproofing membrane, which also serves to uncouple the tiles from the substrate, the bonded flange on the drain is simply installed flush to the substrate surface using a sealing collar to produce an impervious connection with the waterproofing membrane.
It works just as well on timber, as with any other type of substrate and screed. And, because it's a modular system it can be configured for every requirement, providing a sealed waterproof drain for all sorts of wet areas, both domestic and commercial, including apartments, hotels, schools, and washing and shower installations for indoor swimming pools, as well as terraces, patios and balconies.
This system was designed specifically to enable installers to offer a guaranteed waterproof connection, whether the actual waterproofing is a membrane or liquid-applied system, on a wide variety of substrates.
However, liquid-applied membranes can't really be used over timber because of movement, and board joints. Other scenarios, such as a tiled waterproof tray on top of the floor, are feasible, but expensive.
If an existing drain system is leaking, and the pipes and the drain itself are all intact, then the likeliest explanation is that the connection between the drain and the waterproofing membrane has broken down. If the old drain was installed with Schlüter-DITRA you could easily take up a few tiles and reseal the drain using the sealing collar component of the new modular system.
However, if the waterproofing was liquid-applied it's not so easy, because you'll probably end up pulling it away as you lift the tiles. It's likely that you'll need a new waterproofing membrane, new tiles and new drain. Thanks to modern technology, you can now prevent that problem occurring in the future, which is far more cost-effective than the cure.