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Sand floors using accepted MFMA, NWFA or NOFMA procedures (US). Machine sand the surface to remove old treatments and impurities in the wood. The first sanding is made with a coarse sandpaper and high roller pressure. Make the floor surface as even as possible. If the floor is uneven in spots, sand locally to even out these areas.

The final sanding is made with 120-150 grit sandpaper or screen, and with the lowest possible roller pressure. If roller pressure is too high, the soft springwood may be compressed. When moisture from the finish affects such softwood, it will raise the grain When moisture from the finish affects such softwood, it will raise the grain of the floor by swelling back to its original volume. Vacuum and tack the floor before applying Synteko Best. Do not forget to remove dust on skirtings, windowsills, radiators, etc.


  • The finish should be at room temperature of approx. 23°C (73°F).

  • Floor temperature must be between 15 and 25°C (60 to 77°F)

  • Floor moisture content must be between 5 and 15%

  • Humidity must be 50 – 60 % RH

  • If possible direct sunlight should be blocked, also avoid too high or low temperature and humidity

  • The finish should be at room temperature when applied. If the finish is too cold, it flows much less freely and also releases air poorly, which can result in brush stroke marks and air bubbles remaining after drying. It takes about seven hours to warm the lacquer from 0°C to 20°C.


Use Synteko Sealmaster 1600 or Sealer 1601 for sealing (s. separate Product Information). The first coat is intended to seal the wood. Do not apply to heavy coat on less absorbing kind of wood. Do not allow puddles of finish to remain on the floor. If the sealer is poured onto the floor from the container, it must be spread as quickly as possible to prevent the wood from absorbing too much water.

When sealing, it is practical to have as good ventilation as possible. This will help accelerate the drying time and reduce grain raising. In hot and dry climates, reduce ventilation in order to avoid too quick drying and risk of lap marks.

Wait until the wood has an even colour tone before performing intermediate sanding. For intermediate sanding use a used 120 grit screen or paper or a new 150 grit. Vacuum and tack the floor before applying Synteko Best. Do not forget to remove dust on skirtings, windowsills, radiators, etc.


Synteko Best and Synteko Hardener 1648 must be mixed before use (read separate Product information for more detailed information on Synteko Hardener 1648). Add 5% or total contents of Hardener 1648 to a full container of Synteko Best. Immediately begin to shake in order to mix in the hardener into the finish and shake it for at least 30 seconds. Let the mixture stand five minutes before use, allowing air bubbles to surface. Finish mixed with hardener must be used within 2 hours. The container must be kept open after addition of hardener. Shake well before use!



Work gently with the applicator or roller, thus minimizing the amount of air mixed into the finish. Be careful in corners and other places where finish may be applied in increased amounts. Use a smaller brush in such areas.

If the relative humidity of the air is high and/or the temperature is low, reduce the amount of finish used. If the humidity of the air is low and/or the air temperature is high, increase the amount of finish used. Always avoid direct sunshine on the floor, which may heat the hardwood resulting in too quick drying.

When using an applicator, use the ”snow plow” method in continuous, steady movements.

When the whole surface has been completed, leave doors ajar. Avoid direct air drafts over the surface of the floor. Normal airflow is sufficient for the drying of the finish.

If further coats are desired, let the finish dry for 4 to 6 hours and do the intermediate sanding, use a used 120 grit screen or paper or a new 150 grit, vacuum cleaning and apply the finish as described above. However, do not apply more than two coats per day (sealer and/or finish) in order to allow the finish to dry and cure as soon as possible.




An extra layer of Synteko Best can be applied to a pre finished, UV-cured, floor. First, sand or screen the floor using a very fine paper (180-240 grit) or an abrasive pad. Screen the surface until it has turned matte. Vacuum thoroughly, and tack the surface with a damp clean cloth to completely remove all the dust.



An absolute requirement for re-finish or touching up a previously finished surface is that it is free of grease, polish or similar substances. If the floor has been waxed, it should be sanded down to bare wood prior to finishing. If the floor has been treated with polish, an adhesion test must be carried out. First, a small area is coated with finish. After it has dried, scraping the area with the edge of a coin tests the adhesion. If the finish layer loosens, it did not adhere correctly, and complete sanding to bare wood is necessary.

Before re-finishing clean with Synteko Remover 1692, then clean with 10% vinegar in 90% water to remove all residues of grease, polishes, etc. and finally wipe the floor with pure water. Sand or screen with a used 120 or 150 grit to obtain a matte surface, and vacuum clean thoroughly. Apply one or two coats of Synteko Best. Do not apply more than one coat a day.

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