F 4.2

F 4.2


ProFinish is a one-component water-based floor lacquer for easy and convenient use in light traffic residential/domestic areas.

Fast drying, low odour and and non-yellowing.
For previously sealed as well as for new or sanded old floors.
ProFinish is also suitable for lacquering all kinds of indoor woodwork.

ProFinish has received the Danish Indoor Climate Labelling. A product with this labelling has undergone extensive volatile emission and odour tests. This ensures that there are no chemical substances in the product which adversely affect the air quality in the room.

For professional use only.


Product: Water-based co-polymer acrylic/polyurethane lacquer.

Package sizes:
5 litres: Ultramatt, matt, silk matt.

Creamy/milky in the container. Colourless film when dry.


Coverage: 10 m² per litre.

Before application: Shake/stir well before use.

Application tools: Brush, short hair mohair roller, air/airless spray. Don’t apply by pouring out the lacquer directly onto the floor.

Substrate temperature: Minimum 15 °C and maximum 25 °C.

Dilution: Delivered ready for use. Dilution is not recommended.

Drying time at 20 °C and 50 % RH:
Approx. 4 hours.
Fully cured after 72 hours.
Apply only 2 coats of lacquer per day.

RH: Water-based products have a certain gluing effect and are therefore recommended only to be used in rooms with a stable humidity. This means that the difference between the highest and lowest relative humidity should not fluctuate more than 30 % over the year.

Cleaning of tools: Soap and water immediately after use.

Storage: Lasts 1 year if unopened and stored at 20 °C. Not to be exposed to temperatures below 5 °C.


Domestic and light traffic commercial areas:
1 coat PreLak 8 m²/litre
+ 2 coats ProFinish 10 m²/litre.  


Untreated/sanded floors:
Ensure that the surface is absolutely clean, dry and free from all dust, wax, grease, polish and soap residues etc.
Sand the surface to remove dirt and irregularities. Vacuum thoroughly and wipe off with a cloth well wrung in clean water.

  • Apply Junckers PreLak and leave to dry.
  • Sand with sandpaper grit 150-180 along the fibres of the wood.
  • Vacuum sanding dust and wipe off with a cloth well wrung in clean water.
  • Apply one coat of ProFinish.
  • Leave to dry overnight and then apply the final coat of lacquer.

Previously sealed floors:

  • Wash with Junckers SylvaNeutralizer.
  • Sand thoroughly using grit 150-180.
  • Vacuum sanding dust and wipe off with a cloth well wrung in clean water.
  • Apply one coat of ProFinish and leave to dry.
  • Before lacquering the full area, it is recommended to conduct a trial application on a smaller area.

How to conduct a trial application:
Lacquer a couple of spots, 2 coats at 4 hours interval. After drying for 24 hours check the spots for adhesion by scraping with the edge of a coin. If the adhesion is functioning and the appearance of the surface is acceptable, the floor can be lacquered. If the result is not acceptable, continue as described under “Wax/polish treated floors”.

Wax/polish treated floors:

  • Machine sand by first using grit 24-36 to strip old coats.
  • Then remove abrasion marks using grit 60-80.
  • Finally, use grit 120-150 to obtain a completely smooth surface. Vacuum thoroughly.
  • Treat the floor as described under “Untreated/sanded floors”.


Before using the product, read the label on the container carefully and observe the recommended precautionary measures.

See Material Safety Data Sheet for detailed information. 


F 5.3 - Junckers PreLak
F 10.3 - Junckers SylvaNeutralizer