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

One-side dispersion adhesives are suitable for fixing noraplan® with sanded back.

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.

None absorbent subfloors must be leveled at least 3 mm thick; we recommend in raking system.

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.

Installation and fixing

1. Always cut the seam before fixing. Unroll noraplan® in such a way that two sheets overlap approx. 3 cm; place the edge cut by the factory over the uncut edge. By means of a steel straight edge (distance to the cut edge of the sheet: approx. 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 cm. In the case of single-layer floorcoverings, this strip is pulled off downwards, thus producing a seam which is slightly opened at the bottom. Never pull off the strip upwards. This would produce a gaping V-seam. In practice we found that it is better to cut the half-cut bottom layer with a hooked blade.

   In the case of two-layer floorcoverings, the half-cut strip of the bottom sheet is served by means of a hooked blade.

   We do not recommend cutting the underlying edge after the floorcovering has been embedded since this involves a risk of the seam being compressed.

   

   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

   Apply the adhesive to the subfloor with a serrated blade (e.g. TKB A2 or A3).

   Consumption: approx. 300 - 350 g/m²

   
   TKB A2

   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 both longitudinally and transversely with a heavy iron roller (approx. 50 kg) on the entire surface. 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.

1. The flooring seams can be sealed with the nora® hot welding rod - but not earlier than 24 hours after installation.

   A zip effect may occur with polka-dot pattern floorcoverings. This zip effect can be prevented by sealing the joints with nora® hot welding rod.

2. Castor-wheeled office chairs must be fitted with castors featuring 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.

3. 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.