Article No. 338403
Water-based coating with blue stain protection for use on exterior wood
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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 exterior wood
- Wood which is not in ground contact, in accordance with DIN EN 335-1, use classes 2 and 3
- Dimensionally stable wood building elements (when used as a primer only): e.g. windows and doors
- 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
- Primer, intermediate and finishing coats
- Ready to apply by dipping or flow-coating
- Excellent flow characteristics on untreated wood
- Outstanding (wet) adhesion
- Protects wood from moisture and provides effective protection against blue stain fungi
- Protection against weathering (constructive protection and the protection provided by the product) reduces the risk of blue stain and rot
- Increased solids content provides physical protection against nesting wasps
- Film preserver protects against mould and algae
- Water-based: does not give off any unpleasant odours and tools can be cleaned with water
- Quick drying: 2 coats can be applied in one day
- Long-term protection with uniform weathering and no flaking
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%
Temperature of the material, air and substrate: +15 °C to +30 °C.
Stir well, including during application or after a break in work.
Qualified specialist companies: brushing, dipping, flow-coating and spraying in closed systems only.
Apply the second coat after 2-3 hours.
When allowed to dry overnight, intermediate sanding is required.
A third coat is recommended on particularly exposed surfaces.
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.
Apply forced drying to tannin-containing woods.
The best flow results on Accoya, oak and chestnut are achieved at a pH value of 9.0–9.5, corresponding to an additive content of 0.3–0.5% VP 20829 Additive (0366).
If viscosity increases due to evaporation, water must be used to make up for the lost moisture (target viscosity: white: flow time approx. 70 s in a 3 mm DIN cup, translucent: flow time approx. 25 s in a 3 mm DIN 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.
If foaming occurs in the flow coating system, it is recommended to add 0.2-1.0% VP 9325 defoaming agent - strength 2.
The system finder on our website www.remmers.com contains coating recommendations for specific wood types to be used when treating windows and exterior doors.
Can be overcoated: after approx. 2.5 hours (at 23 °C and 50% RH)
If forced drying is applied, can be overcoated: after approx. 90 mins
(20 mins dripping off time/50 mins drying time (35–40 °C)/20 mins cooling time)
Low temperatures, poor ventilation and high humidity delay drying.
Ready to use
Working tools / cleaning
Brush, dipping tank, ﬂow coating facilities, spraying facilities, vacuum facilities, applicator
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
Store in well-sealed, original containers, out of the reach of children and in a dry, cool, well-ventilated room which is protected from direct sunlight and frost. No smoking is permitted in storage areas.
To provide effective protection against blue stain, an application rate of 197-216 ml/m² in at least two coats is required
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.
In accordance with DIN 68800-1, wood preservation measures must be planned in a timely and careful manner in coordination with all parties involved in the construction (architect, client, contractor) taking into account legal requirements and local conditions.
Observe the information sheets “Upkeep and Maintenance of Dipping Tanks and Flow Coating Facilities” and “Information on Workplace Hygiene”.
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.
European waste code 03 02 05* other wood preservatives containing hazardous substances
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.