Function

Schluter-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 covered on one side with a water-permeable filter fabric. The fabric-enhanced studded side, on which the surface covering assembly rests, acts as a high-capacity drainage plane. Schluter-TROBA-PLUS also provides protection for the waterproofing layer, as the closely positioned studs, shaped like truncated cones, have an extremely high load-bearing capacity and distribute loads evenly over the entire waterproofing surface.

Since Schluter-TROBA-PLUS stilts the mortar bed by 5/16" (8 mm) over the entire waterproofing surface, irregularities in the waterproofing layer that could lead to the collection of water, such as uneven sections or elevations at the seams, are effectively bridged. Major defects in the slope of the waterproofing layer should be corrected prior to laying Schluter-TROBA-PLUS by applying an appropriate mortar. The open area between the studs and the fabric also creates an insulated air space that protects the waterproofing membrane against harmful thermal stress. Moreover, the insulated air space provides an effective sound barrier.

Schluter in the US