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Cisilent® Type E

Cisilent® is the efficient solution of noise protection problems. Not much room is needed for the installation. Mobile systems are also possible due to low transportation weight and simple installation.

The flexible noise barrier Cisilent® achieves a sound reduction index Rw (C; Ctr) of up to 21 (-1; -4) dB in accordance with ISO 717-1and thereby fulfils the required values in the relevant German directive for noise barriers along roads (ZTV-Lsw 88) - and this at only a fraction of the mass per unit area of conventional noise protection solutions.

Cisilent® offers noise protection wherever it is necessary e.g. along heavily trafficked roads, sports facilities, construction sites, airports or interior use such as production halls.


  • a) mobile or stationary housing of all kinds of machines and equipment
  • b) mobile or stationary partitions to separate sensitive office or production areas from industrial and traffic noise
  • c) mobile or stationary noise barrier for protection against noise from construction sites and traffic

Text of Tender document

CISILENT® TYPE E, flexible noise protection system, fabric construction in three layers, made of high strength polyester fabric, coated on both sides with plasticised PVC, flame resistant in accordance with DIN 4102, protective varnish top coat, units filled with mineral wool. The side facing the noise is perforated and highly sound absorbing; the side facing away has a closed surface and is highly reflective.

a) Design for mobile or stationary housing

Height of housing, length of housing, type of structural support on-site (e.g. circular hollow section, rectangular hollow section), fastening to the structure (e.g. girder/flats connection, girder/hollow seam suspension attachment, girder/keder-groove suspension attachment)

b) Design for mobile or stationary partition

Length x height of partition or single unit, type of fastening (e.g. single or double track roller rail)

c) Design for mobile or stationary noise

Length x height of noise barrier, distance between stanchions or length of individual units, type of support structure on site (e.g. circular hollow section, rectangular hollow section, scaffolding, fencing) and fastening to the support structure (e.g. girder/flats connection, girder/seam suspension attachment, girder/keder-groove suspension attachment, rope-suspension/eyes)

Technical Data

  • fabric construction in three layers of high-strength polyester yarn, low-wick type, coated on both sides with plasticised PVC, protective varnish top coat with fluoropolymer or acrylic coating
  • perforated layer: weight 440 g/m², tear strength (warp/weft) 3000/3000 N/5cm, tear propagation strength (warp/weft)
    600/600 N
  • closed layer: weight from 590 to 670 g/m², tear strength (warp/weft) 2800/2800 N/5cm, tear propagation strength (warp/weft) 280/280 N
  • Filler mineral wool
  • Thermo, UV and ozone resistant
  • Weight approx. 5,5 kg/m²
    (with standard mineral wool filler)
  • Airborne sound reduction index of up to 25 dB, depending on frequency (standard mineral wool filler)

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