When laying KRONOTEX flooring, make sure that the subfloor is suitable. Suitable are, for example:
This checklist will help ensure that you will enjoy your laminate floor for a very long time.
- After installing the underlayment and floor, make sure that there is enough space (a gap of at least a centimetre) for doors to freely open and close. If necessary, cut a piece off the bottom of them.
- Are the rooms where you want to lay the floor suitable? Keep in mind that laminate flooring should not be installed in moist or wet rooms such as bathrooms, saunas and laundry rooms. The type of subfloor also matters.
- The suitable subfloors include V100 boarding, old PVC flooring (provided it is fully glued and not floating), wood floors, ceramic, linoleum and cement screed.
- Make sure to assess the suitability of the subfloor. Unless you can submit a report showing that its residual moisture was not excessive, any problems experienced will be excluded from the manufacturer’s warranty.
- Thick-pile carpets are unsuitable, as they are too soft. They should therefore be removed. Xylolith screed contains too much residual moisture.
- Pretreatment of the subfloor: only lay KRONOTEX laminate flooring on subfloors that are absolutely dry, level, firm, and clean. Minor unevenness can be compensated for by an underlayment; differences in height greater than 3 mm per metre need to be levelled by grinding and/or applying filler. Also level out old, deformed hardwood floors and lay the planks perpendicular to the old ones.
- Use of underlayments: In order to keep moisture and water vapour out, lay a PE membrane (0.2 mm thick) underneath the laminate flooring. This is also necessary if there is underfloor heating. Subfloors that directly contact the earth or are subject to considerable temperature fluctuations require a PE membrane that is at least 1.2 mm thick. Subfloors of this type can be found in conservatories, unheated rooms, and rooms without a cellar underneath. Overlap sections of membrane by at least 20 cm or glue them together; extend them up onto walls by approx. 5 cm and cover them later with skirting boards.
Use foamed PE or foamed felt as thermal insulation. Suitable for acoustic insulation is foamed PE, KRONOTEX laminate flooring with integrated Sound Design underlayment and KRONOTEX underlayment mats consisting of moisture-regulating corrugated cardboard. These should be butted and taped over with moisture-proof sticky tape (the advantage: only a single step is required).
Make sure to leave expansion joints. KRONOTEX flooring is a natural product. Because it is made of wood, the planks are liable to shrink or expand in all directions. It is therefore essential to leave an expansion joint at least 10 mm wide or 1.5 mm per running metre at all walls and protrusions as well as elements that emerge from the floor (e.g. pipes, cables, thresholds, pillars, partitions etc.). To ensure this, it is a good idea to temporarily place spacers.
- In rooms measuring more than 12 metres parallel to the planks or 8 metres perpendicular to them, it is necessary to additionally install an expansion element with a total width of at least 10 mm or 1.5 mm per running metre. This also applies to doorways, archways and bends in corridors. We recommend removing the tongues on the edges of the planks along expansion elements to ensure sufficient room for them to move. The floor must completely float, in other words it may not be attached to the subfloor anywhere. Fix skirting boards to the wall only.
- Covering of expansion joints: after laying the flooring, use a strip or rail to harmoniously cover the expansion joints and transitions to other flooring of the same or different height. For covering wall joints, use KRONOTEX skirting boards of a décor that matches the KRONOTEX flooring. All required accessories are available from your KRONOTEX dealer.
Thermal conductivity (W / (m × K))
Overall heat transfer coefficient Thermal resistance ((m² × K) / W)