Terrace on EPDM foil or tarred membrane
When building a wooden deck on an EPDM membrane (also known as a roofing membrane) or welded tar membranes, you must pay particular attention to the protection of the respective waterproofing. In the case of EPDM membranes, we recommend laying root fleece over the entire surface first. Even if weed growth is not usually a problem on roof terraces and balconies, the fleece fulfills the important function of preventing a chemical reaction between the foil and the terrace pad.
The challenge of height compensation
Even if the height compensation is lower when laying on a roof or balcony than when laying on a slope or on the ground, the surfaces are generally not 100% level. Here too, leveling must therefore be carried out using several terrace pads or pedestals, which must also keep the railing height in mind and only have a limited installation height available.