As per DIN EN 1817 "Elastic floorcoverings - Homogeneous and heterogeneous flat elastomer floorcoverings".

Only conductive adhesives are suitable for fixing purposes.

As a basic principle, we cannot accept the use of conductive primers, since they reduce the subfloor's absorbency.

Stress-free levelling compounds may exhibit reduced absorbency. This must be taken into account when using dispersion adhesive by modifying the point of time for embedding, since the water content in the dispersion adhesive must be largely absorbed by the air.

At the time of installation and of adhesive bonding, the subfloor temperature must be not less than 15 °C. The noraplan® rubber must have the subfloor temperature. Especially in winter time the rubber floorcovering has to be stored at site several days.

The connection of the earthing point is the same with both, noraplan® in tiles or in rolls. A copper tape (self adhesive 10 x 0,08 mm) is fixed to the suitable subfloor (approximately 1,5 m). Per 40 m2 one earthing point is necessary.

Grounding instructions over large areas

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The following variants are possible for electrically conductive installations:

Always cut the seam before fixing.

1. Before installation, unroll both sheets in such a way that they overlap approx. 3 cm; place the edge cut by the factory over the uncut edge. By means of a steel straight edge (maximum distance to the cut edge of the sheet: 1 cm) and the nora® seam cutter or a straight blade, straighten the edge cut by the factory and at the same time cut into the sheet underneath (scribing). Width of the half-cut edge strip: approx. 2 m. With noraplan® duo el floorcoverings, the half-cut strip is severed with the large hooked blade.
   

   Please note:
   Pay attention to the arrows on the floorcovering's back; make sure the arrows on the back are all pointing in the same direction.

2. Strictly follow the recommendations and processing instructions of the adhesive manufacturers. If in doubt, confirmation must be obtained from the adhesive manufacturer as to whether the adhesive you want to use is suitable for fixing the flooring in question on the subfloor involved.

3. Dispersion adhesive, conductive

   Apply the adhesive to the subfloor with a serrated blade (e.g. TKB A2).

   Consumption: approx. 300 - 350 g/m²

   
   TKB A2

   Caution: Use serration according to the adhesive manufacturer's instructions in case of conductive adhesives.

   Replace worn serrated blades in good time. Airing time required will depend on the temperature, the humidity and the absorbency of the subfloor concerned, which is why a precise time cannot be stated.

   The adhesive furrow must still have a soft core. When checking by means of the touch test, the adhesive must still be tacky, but must no longer smear. When the floorcovering is embedded in the adhesive, care must be taken to ensure that the entire back of the floorcovering is completely covered with adhesive.

4. Position flooring edges without applying pressure.
   Under no circumstances should they be pressed or crushed.

5. Carefully rub the floorcovering into place over its entire surface, e.g. using a cork board, or press it down into position. When dispersion adhesive is used, this procedure must be repeated after a while (depending on the temperature), in particular at ends and seams.

6. During the installation and adhesive bonding period, the flooring must be protected against temperature fluctuations, e.g. as a result of direct sunlight.

   Wet or damp cleaning may only be carried out after the adhesive has bonded, i.e. after approx. 48 hours.

7. Basically the joints have to be welded either with means of hot welding rod or with nora joint sealing compound.

1. Castor-wheeled office chairs must be equipped with castors with soft rolling tracks. Similarly, if the floorcovering is going to be subjected to rolling devices, the mean area pressure exerted by the castors on the floor must not exceed 4 N/mm².

   If the floorcovering is going to be subjected to castor-wheeled traffic, the screed and the process materials used (e.g. levelling compound, adhesive) must be suitable for castor-wheeled traffic.

2. If installed on screeds with underfloor heating, please follow the instructions given under Important notes / General remarks - 10. screed with underfloor heating.

   In addition, only adhesives with the appropriate temperature-resistant properties may be used.