ROOFGUARD leaf screen with instant alerting

The ROOFGUARD was specially developed to minimize the unexpected consequences of critical backwater up to the risk of collapse.


Due to increasingly frequent heavy rainfall events with dirty leaf screens, there is a rising risk of backwater on a flat roof entering the house and causing considerable damage – especially on older roofs without emergency overflow there is this danger.

The ROOFGUARD developed by FLECK GmbH is a leaf screen featuring a self-cleaning lift mechanism. It is simply mounted over the existing roof gully or drain, without penetrating the roof waterproofing. If the water accumulates up to 60 mm on the flat roof in extreme weather conditions because the drain is blocked by leaves or hailstones, for example, a unique lift mechanism is triggered: The movable floats and the sieve move upwards and open the roof drain abruptly so that leaves or accumulated hail along with the accumulated water are flushed away unhindered.

FLECK connect module (based on Exelonix 5G SENS) sends a notification in real time to the user using power efficient cellular communication. If the water level falls again, the sieve lowers itself again and FLECK connect sends the all-clear.

The owner, roof craftsman or facility manager can then decide whether the roof should be inspected or if maintenance needs to be carried out. FLECK connect is available as a set with the ROOFGUARD or separately for retrofitting on an already installed ROOFGUARD. It does not need an external power supply and also informs the operator when the battery is low.

Customer Benefit

  • FLECK ROOFGUARD frees flat roofs from critical backwater.
  • Long battery lifetime
  • Best cellular coverage
  • Additional GPS-Location


  • Real estate owners,
  • Property manager


Fleck GmbH

NIS – Nordic Industrial Services GmbH