Application and Function

Schlüter®-TROBA-PLUS is a reliable and permanently effective drainage layer for use in horizontal applications over sloped waterproofing layers. It consists of a high impact, studded polyethylene sheet that is covered on one side with a water permeable filter fabric.

Instead of filter webbing, Schlüter®-TROBA-PLUS 8G has fleece webbing with a mesh size of approx. 2 x 2 mm laminated on one side.

The laminated studded side on which the surface assembly rests acts as a high capacity drainage plane (passive capillary drainage).

Schlüter®-TROBA-PLUS provides additional protection for the waterproofing. The closely positioned studs, shaped like truncated cones, have an extremely high load bearing capacity. The cavities between the studs and the laminated webbing create a heat and sound insulating air space and protect the waterproofing membrane against harmful thermal stress. Moreover, loads are distributed evenly over the entire waterproofing surface.

Schlüter®-TROBA-PLUS 8 and 8G raise the screed bed by 8 mm over the entire waterproofing surface. Schlüter®-TROBA-PLUS 12 raises it by 12 mm. This effectively bridges minor defects in the sloped waterproofing assembly, such as uneven or elevated spots in the overlap area, where water may back up. Larger uneven areas can be levelled with an appropriate mortar prior to installing Schlüter®-TROBA-PLUS.