Article No. 28335820
Water-based primer with film protection
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Product specifications
On delivery
The stated values represent typical product characteristics and are not to be construed as binding product specifications.
Field of application
- Exterior wood with no ground contact
- Soft and hard woods
- Not suitable for oak, chestnut or iroko
- Dimensionally stable wood building elements: e.g. doors, windows and shutters
- Wood building elements with limited dimensional stability, e.g. folding shutters, matchboarding, summerhouses
- Wood building elements with no dimensional stability: e.g. fences, framework, carports, planking
Properties
- Ready to apply by dipping or flow-coating
- Excellent flow characteristics on untreated wood
- Good pore wetting performance
- Outstanding (wet) adhesion
- Film preserver protects against microbial damage
- Long life thanks to special UV absorbers and lignin stabilisers
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Preparation
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Substrate requirements
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%
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Application
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Stir well, including during application or after a break in work.
Qualified specialist companies: brushing, dipping, flow coating, spraying.
Once dry, apply further coatings.
Seal opened containers well and use contents as soon as possible.
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Application instructions
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Check colour, adhesion and compatibility with the substrate by setting up a trial area.
Before coating technically modified woods and wood-based materials, apply the product to a trial surface and conduct a suitability test on the desired area of use.
Prior to full application, please apply a test coat to a sample area under practical conditions using the desired system, then test or examine the surface properties.
Ensure good ventilation.
Optimum flow results are achieved at a pH of 8.5 - 9.2, corresponding to an addition of 0.1 - 0.5% VP 21687 Additive.
If the viscosity increases due to evaporation, this must be compensated for with water (target viscosity: runout time approx. 24 - 28 s in 3 mm ISO cup).
Dilute with up to 10% water to improve flow properties in unfavourable conditions (elevated temperatures, low humidity). Add water to make up for any moisture lost through evaporation.
In the event of foaming in the flow coating system, we recommend adding 0.1 to 0.3% VP 9325 Defoamer Strength 2.
In summer we recommend adding 0.1% Antibak VP 20164 to opened containers after using in a flow coating facility.
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Drying
Overcoating: after approx. 2.5 hours
Practice values at +20 °C and 65% relative humidity.
Low temperatures, poor ventilation and high humidity delay drying.
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Thinning
Ready to use
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Working tools / cleaning
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Paintbrush, dipping tank, flow coating facility, spraying equipment, vacuum processing equipment
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Clean tools with water or Aqua RK-898 Cleaning Concentrate immediately after use.
Ensure that any residue from cleaning is disposed of correctly.
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Storage / shelf life
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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.
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Usage
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120 - 135 ml/m² per coat
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Depending on the processing method, wood type and wood surface.
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General information
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Observe the information sheets “Upkeep and Maintenance of Dipping Tanks and Flow Coating Facilities” and “Information on Workplace Hygiene”.
The label "WKI Premium" refers to various tested colour shades. The clear variant was not tested accordingly.
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Disposal instructions
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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.
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Safety / regulations
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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.
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