Article No. 348203
Water-based UV protection stain for interior wood with indoor air cleaning effect


Product specifications
The stated values represent typical product characteristics and are not to be construed as binding product specifications.
Field of application
- Interior wood
- Soft and hard woods
- Especially suitable for softwoods, in particular spruce/fir
- Building elements with no or limited dimensional stability
- Wall and ceiling elements made of cross-laminated timber (CLT) and laminated veneer lumber (LVL)
- Wooden building elements made of glued laminated timber, laminated beams (Duobalken & Triobalken) and solid structural timber
- Industrial series production (vacuum procedure)
- Primer & top coat
Properties
- Indoor air cleaning [iac]: reduces the formaldehyde content in indoor air
- Contains UV blockers to delay yellowing of the wood substrate
- Water repelling effect
- Free from film preservation and wood protection biocides
- Good flow properties
- Does not flake
- Does not tear
- Fire behaviour according to DIN EN 13501-1: C-s1,d0 on suitable substrates
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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.
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.
After drying, apply a second coat if necessary.
When allowed to dry overnight, intermediate sanding is required.
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.
Substances in oak may bleed, causing dark discolouration, when coated with water dilutable dispersion stains.
Do not use in direct sunlight.
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Drying
Ready for overcoating: after approx. 4 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, VACUMAT® vacuum coating equipment, spraying 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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80 - 120 ml/m² per coat
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General information
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The indoor air cleaning effect has been independently tested and lasts for several years. The duration depends on the room conditions, air exchange rate, application quantity, formaldehyde concentration in the indoor air, and the wooden elements being coated. Applying a finishing coat over the product does not impair its effectiveness. The formaldehyde is irreversibly bound and no re-emission occurs. Dried varnish films do not differ from conventional coating materials in the following aspects: PPE during sanding, health risks of contact with the varnish, and disposal.
On planed larch and softwoods with a high resin content, the coating may have reduced adhesion and resistance to weathering. This is especially the case on horizontal year rings, knots and areas of winter growth that are high in resin. Maintenance and renovation must be carried out more frequently on these surfaces.
The only remedy for this is pre-weathering or very coarse sanding (P80).
If these wood types are rough-sawn, considerably longer maintenance and renovation intervals are to be expected.
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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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