What should be included in the installation instructions? Even for parquet, there isn’t much information. Isn’t that enough?:
For the installation of Disano Aqua vinyl flooring in wet rooms, full-surface bonding and prior priming are mandatory. For priming, we recommend... of the brand Uzin; for bonding, you will find the premium... under the Accessories section in our online shop. The manufacturer of the adhesive is also Uzin.
Suitable subfloors:
Cement (CT), cement screed (CFT)
Calcium sulfate (CA), calcium sulfate screed (CFA)
Mastic asphalt screed (AS)
V 100 (E1) installation chipboard or other wooden construction boards.
Adhesive type according to TRGS 610
Note:
Due to the hazardous substances regulation TRGS 610, solvent-free adhesives must be used if the product and installation conditions allow.
Inspection and preparation of the subfloor:
The substrate must be inspected according to VOB, Part C, DIN 18 365 “Floor covering works” and DIN 18 356 “Parquet works.” The subfloor must be compressive and tensile resistant, absorbent, free of cracks, dry, level, and clean. Contaminated substrates must be freed of impurities such as oils, fats, wax, paint, gypsum, dust, and other adhesion-impairing substances.
For newly installed cement and calcium sulfate screeds, generally no additional subfloor preparation is required.
Calcium sulfate flowing screeds must be sanded or brushed before bonding and then vacuumed.
For critical substrates such as old mastic asphalt screeds, highly absorbent or slightly absorbent cement screeds, old ceramic coverings, etc., subfloor preparation is necessary to obtain a suitable substrate. Suitable filler, leveling, or smoothing compounds must be used according to the manufacturer's instructions.
Mastic asphalt screeds must be filled or sealed with reactive resin primers beforehand.
1. Moisture check
The subfloor must be professionally checked for readiness for installation using suitable measuring devices (CM meter).
Please observe the preparatory measures for “Installation on underfloor heating” in the installation instructions enclosed in the packages or on our homepage. In principle, the signed “Protocol for screed heating readiness” – handed over by the client – must be available before installation.
2. Flatness check (DIN 18202)
If necessary, the subfloor must be filled with suitable filler, leveling, or smoothing compounds according to the manufacturer’s specifications. Special primers for subfloor leveling are required. The edge insulation strips on the screed may only be removed after priming and filling work.
3. Surface strength
This is checked using the grid scratch and hammer test methods.
4. Day joints in the screed (false joints or predetermined breaking points)
They must be properly connected in a force-locking manner before installation. Building expansion joints, however, must under no circumstances be closed.
Bonding:
Bonding is not possible at floor temperatures below 17° C. The room must be heated and well ventilated if necessary so that a relative humidity in the room (e.g., in new buildings) of more than 70% is not exceeded.
Storage of the adhesive:
Cool and dry, unopened 9 months, cover adhesive in opened containers with foil again before sealing.
Application quantity:
Depending on the absorbency of the subfloor approx. 800 - 1000 g/m² Uzin MK 250
Hamberger special trowel L
Please also observe the instructions on the adhesive containers.
General notes on full-surface bonding:
In new buildings, the high-quality processed materials should not be stored due to the existing residual construction moisture and increased air humidity.
Packages are only opened immediately before installation begins; leftover boards must be rewrapped in foil if installation is interrupted for a longer period.
The adhesive is applied with the Hamberger special trowel L (initially only for one row of elements).
Ideal room temperature between +18 °C and 23 °C, do not install below +10 °C or above 65% relative humidity.
The first row of elements is aligned straight with the tongue side towards the wall and firmly fixed with wedges. For long distances, check straightness with a guide string. Press the elements into the adhesive bed to ensure good adhesive contact.
The leftover piece of the first row can be used again in the second row. Observe a minimum end gap offset of 50 cm.
Special transition strips can be embedded in the adhesive bed at transitions to other floor coverings or door thresholds, as well as at ceramic surrounds of tiled stoves or open fireplaces. An expansion gap of at least 5 mm must be maintained in the transition strip.
The installed Disano floor surface is loadable after approx. 48 hours.
Room climate:
The preservation of the value of the Hamberger branded floor and the well-being of people require a healthy indoor climate of approx. 30 - 60% relative humidity at a room temperature of 20 °C. If humidity is significantly or permanently below this during the heating period, we recommend using an electric humidifier (evaporator) to avoid extreme drying of the floor. These may need to be operated already at the beginning of the heating period.
Recommendation:
For modernization, renovation, or defective subfloors, old PVC or firmly glued needle felt coverings, it is advisable to prefer floating installation. In case of doubt, please contact our application technology department.