Synthetic waterproofing membranes have a very smooth surface, so that holders must be secured against sliding away or shifting
- on roof slopes of approx. 5 % and more or
- if the membranes are loose laid and mechanically fastened.
The following methods for securing are available
- welding to the roof sealing, provided the holder material43 can be welded to EVALON®, or
- EVALON® tapes, with rounded off corners, arranged in direction of the slope which are conducted through the holder44 and welded at their ends to the roof sealing with an overlap.
On mechanically fastened waterproofing membranes, the lightning conductor holders are placed directly next to the membrane fasteners.
45 E. g. from b/s/t in 83256 Rimsting/Chiemsee, Germany.
46 E. g. “type KF” from DEHN + SÖHNE in 92306 Neumarkt/Opf., Germany