Accoya® wood building elements
The Accoya® wood production process that ‘enables nature’, creates a new durable, stable and beautiful product – that has the very best environmental credentials. Created from readily available sustainably sourced non-durable woods, Accoya® is designed to match or exceed the properties of the very best tropical hardwoods. Highly durable and stable, Accoya excels in any climate in tough applications.Accoya offers a multitude of finishes, with coatings looking brilliant and lasting longer than other wood types. Accoya is a truly sustainable choice that helps you make a difference to the challenges facing the world.
Enhancing the performance of Accoya®
Remmers believes that wood is a natural resource that must be protected. Accoya® windows and doors designed and manufactured using Remmers solutions or maintenance care kits will provide an extended service life with low maintenance. This is based on case studies and live window exposure since 2006. Remmers Induline premium coatings have been developed to enhance the longevity and protection of quality wood products and have proven to be a perfect match with the properties Accoya®. The effectiveness, longevity and ecological safety of Remmers Induline premium coatings are regularly tested by reputed institutions to guarantee performance. Remmers will work with you every step of the way to ensure that you have the best coating systems possible to meet your exact requirements.
Remmers opaque and translucent wood coatings on Accoya®
References
- Jewish Museum, Berlin (DE)
- Old Farmhouse, near Löngingen (DE)
- Schoolkerk, Groningen (NL)
- Sneek Bridge, Sneek (NL)
- The Watch Factory, Prescot (UK)
14 year outdoor exposure test
Case study
Windows made from Accoya® wood with various coatings from Remmers have been exposed to natural weathering in the Netherlands for 14 years with no maintenance at all – and the results show no natural coating degradation or loss of performance.
The window was mounted in a framework rig to mimic real life installation in a natural vertical position with no shelter at the Accsys test field in Arnhem, with no maintenance care over the entire period. The purpose of the long-term test was initially to test for coating compatibility, but turned into a long term exposure test to determine the very long term effects of the outdoor elements on Accoya® wood products treated with Remmers coatings.
The coatings applied just once back in 2007 for this test were:
- 1x Induline SW-900: water-based impregnation
- 1x Induline GW-360: water-based priming (colour: oak)
- 2x Induline LW-700: water-based translucent end-coating (colour: oak)
A recent reinspection of the test window was performed by Remmers in March 2021. Remmers said: “After this long most windows show poor coating performance and are not in a very good state. With our coatings on Accoya® wood, it is very different. There is no opening up of joints, no cracking or peeling, and the only sign of nearly a decade and a half of exposure is some very minor flaking over a small area, meaning coated Accoya® really stands the test of time"
These results offer proof that Remmers coatings intensively protects Accoya® wood, eliminating the need for maintenance or reapplication for over a decade.
Sneek Bridge, The Netherlands
Case study
The city of Sneek in the Netherlands has a rich maritime legacy, so when the new landmark entrance was designed, it was important to incorporate this. The design featuring exposed wood beams, representing an upturned fishing boat was brought to life with the help of Accoya® strength graded wood, finished with various Remmers applied coatings.
At the heart of this project, was the need for a durable, sustainable wood type with low CO2 emissions, as all bridges built in the Netherlands must have a lifespan of at least 80 years. To ensure this, approximately 1200m² of Accoya® strength graded wood with various applied coatings from Remmers were used for the construction. The supporting beams of the bridge were made by finger-jointing and laminating to the required dimensions. By using a Remmers coating on Accoya® wood, an extensive service life like this can be achieved with very little maintenance requirements. Additionally there is no risk of swelling or shrinking or opening up of joints, meaning Remmers coated Accoya® really stands the test of time.
Article No. 348805
Water-based primer with protection against soft rot and blue stain
Hazard warnings
- Use biocides safely. Always read the label and product information before using!
Product specifications
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
- Dimensionally stable wood building elements: 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
Properties
- Ready to apply by dipping or flow-coating
- Excellent flow characteristics on untreated wood
- Good pore wetting performance
- Outstanding (wet) adhesion
- Protects against blue stain and soft rot
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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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Application requirements
Temperature of the material, air and substrate: +15 °C to +30 °C.
Processing conditions are between +15 °C and +30 °C at a relative humidity of 40 - 80%. -
Stir well, including during application or after a break in work.
Qualified specialist companies: brushing, dipping, flow-coating and spraying in closed systems only.
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 coating 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.
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 the viscosity increases due to evaporation, this must be compensated for using water (target viscosity: clear, special colours, lignin-stabilising: runout time approx. 23 - 27 s in ISO cup 3 mm; white: runout time approx. 34 - 45 s in ISO cup 3 mm)
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.
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Drying
Can be overcoated: after approx. 4 hours
(at 23 °C and 50% RH)
If forced drying is used, can be overcoated: after approx. 90 minutes
(20 minutes dripping/50 minutes drying phase (35 – 40 °C)/20 minutes cooling phase)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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Brush, dipping tank, flow coating facility, spray coating facility, vacuum machine
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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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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.
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Usage
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120 - 140 ml/m²
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General information
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According to the current state of the art (this includes DIN 68800-1 and -3 in Germany), wood preservation measures must also be planned for non-load-bearing wooden elements in good time and with due care, with the agreement of all parties involved in the construction (architect, developer, builder) and in compliance with the legal requirements and the conditions on site. The use of biocidal (“chemical”) wood preservatives should therefore always be indicated in suitable fashion prior to sale, or must be agreed in advance with the client in writing. Failure to comply with this requirement may result in country-specific or contract-specific conflicts with legal requirements, standards or certification systems. The Remmers Technical Service would be happy to discuss the matter and provide you with a template agreement for the use of a biocidal (“chemical”) wood preservative on the wooden elements being used.
Observe the information sheets “Upkeep and Maintenance of Dipping Tanks and Flow Coating Facilities” and “Information on Workplace Hygiene”.
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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.
European waste code 03 02 02* organochlorinated wood preservatives
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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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