Article No. 388120
Water-based, transparent, UV-curing primer
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The stated values represent typical product characteristics and are not to be construed as binding product specifications.
Field of application
- For use on interior and exterior wood
- Soft and hard woods
- Dimensionally stable wood building elements: e.g. windows and doors
- Wood building elements with limited dimensional stability: e.g. matchboarding, facade elements
- Good pore wetting performance
- Outstanding (wet) adhesion
- UV-curing: very quick handling
- High UV protection thanks to special binder
The substrate must be clean, dry, free of dust, grease and loose substances, and prepared in the correct manner.
Dimensionally stable wood building elements: wood moisture content 11-15%
Wood building elements with limited or no dimensional stability: wood moisture content max. 18%
If necessary, impregnate non-resistant woods with a wood preservative* (*Use biocides safely. Always read the label and product information before use).
Observe BFS Code of Practice No. 18 "Coatings on Wood and Wooden Working Materials in Outdoor Areas".
Temperature of the material, air and substrate: from min. +15 °C to max. +30 °C
The values given are based on undiluted material. The best spraying pattern is achieved if the material has a temperature of 15-20 °C.
Airless spraying: nozzle size: 0.28-0.33 mm; material pressure: 70-90 bar.
Air-mix spraying: nozzle size: 0.28-0.33 mm; material pressure: 70-90 bar, atomiser air pressure 1-2 bar.
Apply further coatings after drying and UV curing
Seal opened containers well and use contents as soon as possible.
Check colour, adhesion and compatibility with the substrate by setting up a trial area.
Substances in oak may bleed, causing dark discolouration, when coated with water dilutable dispersion stains.
To prevent any substances in the wood from becoming active, forced drying should be carried out.
The product is not self-crosslinking and must be cured using a suitable UV lamp
Ensure good ventilation.
Observe current standards and guidelines for coating wood building elements outdoors (Codes of Practice issued by the German Association of Window and Facade Manufacturers (VFF), Code of Practice No. 18 issued by the German Federal Committee for Paint and the Protection of Material Assets (BFS), guidelines issued by the German Lacquer and Printing Ink Association (VdL) and ift guidelines issued by the Institut für Fenstertechnik).
UV curing: after approx. 4 hours (at 23 °C and 50% RH)
UV curing after forced drying: after approx. 20 minutes evaporation zone (at approx. 20 °C and 65 - 75% RH) / 45 minutes drying phase (approx. 45 °C; 1 m/s air circulation)
Lamp types: Ga+Hg
Lamp power: 80-120 watt/cm²
Cross-linking energy values:
clear UV+ & light colours
500 - 800 mJ/cm²
800 - 1000 mJ/cm²
Distance between object and lamp: 20-30 cm
These parameters are guide values. Precise parameters are determined on a customer-specific basis.
Can be sanded and overcoated: after 10 minutes cooling phase
Ready to use
Working tools / cleaning
Manual spray gun, automatic spraying equipment
Clean tools with water or Aqua RK-898 Cleaning Concentrate immediately after use.
Ensure that any residue from cleaning is disposed of correctly.
Storage / shelf life
If stored unopened in its original container in a cool, dry place and protected against frost, the product will keep for at least 12 months.
Always close the container and protect the contents from sunlight.
100 - 150 ml/m² per coat (plus spraying loss)
(corresponds to wet film thickness: 100 - 150 μm, dry film thickness: 30 - 45 μm)
Stain for direct exposure to weather:
Induline SW-900 VP 21308 (3768)
Induline UV-GW-385 special colours
Induline ZW-504i clear (3453) / Induline UV-LW-781/20 special colours matt
Induline UV-LW-781/20 special colours matt
Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.
Safety / regulations
For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.