The topic of secondary drainage is always the subject of controversial discussions in professional circles. Our opinion on this has not changed over the years and is backed up by decades of practical experience in the kitchen and industrial sector.
Only capillary forces are present in the thin tile bed. Trickles in the direction of the slope are physically impossible. Corresponding studies clearly prove this.
For hygienic reasons, a drain channel, whether in a commercial kitchen, swimming pool or domestic shower, needs an anti-capillary edge to prevent shower water from penetrating under the tile.
Optional secondary drainage
As there is a demand for channels with secondary drainage in spite of the above, TECE now offers an option for secondary drainage with the TECEdrainline-Evo, without having to dispense with the tried-and-tested capillary protection edge. The result is a shower channel for the highest hygienic demands.
Trick one: the doubled base
The stainless steel channel (1) is fixed in a hard shell (2). Water (3) would collect in the hard shell under the stainless steel channel to prevent backwater.
Trick two: the dual seal
When removing the dip rod (1) the openings (2) in the specially constructed double-lip seal are left clear. If water were to build up there, it could drain into the drain pan (3).
The capillary protection edge
The channel body remains closed throughout! Dirt and soap residues cannot get under the tiles. TECE thus remains true to itself and the principle of the capillary protection edge.
