Faster drain stack replacement with wet room modules Bravida uses LK Wet Room Modules for a major drain stack replacement at Uddevallahem. This drain stack replacement is part of a major renovation of six housing properties. The buildings were constructed in the mid-1960s and accommodate a total of 231 apartments. The modules are prefabricated and custom-made for the project, which considerably reduces the installation time. "The modules fit well and are of very good quality. Most things are already prepared, so installation is quick and easy," says Anders Pettersson, project manager at Bravida.