When a wooden floor has scratches and stains and is extremely worn-down where people walk, it should be sanded down. The layer of coating on a good parquet floor is at least four millimetres thick. You can, therefore, easily sand it down three or four times.

Proceed as follows:

First of all, clear the room where you want to sand the floor and protect other rooms and furniture against dust using plastic sheets.

Then remove the floor strips. To do this, pull the nails out.

You should plan for three sanding runs. In principle, you should work on the entire wooden floor with each grit. Make sure that the tool is never left running on one place, otherwise this will very quickly put dents in the wood. The best thing to do is practise guiding the machine with fine sanding paper in the centre of the room first.

For the first sanding run, use the coarse red:Wood sanding belt with a grit of 40. Always guide the belt sander in the direction of the grain. When sanding uneven boards, you can also sand diagonally at first because this removes more material. In general the following applies: sand forwards and backwards in a line and move from the centre of the room out to the walls.

After this first coarse sanding, now sand the entire surface with a medium grit (80).

Cracks or wide joints should be filled with filler. To do this, mix the sanding dust collected in the BOSCH Micro-Filter System with fluid pore filler. This self-made wood putty is the same colour as your floor. Use a wide spatula to press the mass into the joints.

After they have dried, all filled points should be planed off and sanded flat. Use a sanding belt with grit of 120 for this.

After this, sand the surface using a BOSCH Random Orbit Sander (grit of 240). Then remove all of the sanding dust.

Apply the first undercoat across the grain and roll over it again lengthways.

If the undercoat is dry, sand the surface smooth using a BOSCH Random Orbit Sander.

Remove all sanding dust and the apply two sealing layers one after the other.