Balconies and terraces must withstand all weather conditions with almost no protection. Such structures must be able to absorb and effectively drain away moisture to be durable and stand the test of time.

Installed between the waterproofing layer and the covering assembly above, the cone-shaped studs of Schlüter-TROBA-PLUS create a drainage space which means water can be channelled in the direction of the slope towards the drainage exit e.g. guttering, thanks to gravity. TROBA-PLUS also protects the waterproofing layer from damage caused by extreme temperature changes.

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.

As a closed polyethylene mat, TROBA-PLUS also protects the waterproofing layer. The closely spaced, truncated, conical studs have an extremely high load bearing capacity. The cavities between the studs and the filter fabric create a heat and sound insulating air space and protect the waterproofing membrane against harmful thermal stress.

Schlüter-TROBA-PLUS 8 raises the screed bed by 8 mm over the entire waterproofing surface. Schlüter-TROBA-PLUS 12 raises it by 12 mm. This results in an even load distribution over the waterproofing assembly and 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 mortar before installing TROBA-PLUS