Thefloor must be dry and preferably newly sanded. A mixture of1-2dl solid green soap per litre of hot water is poured over the floor. It is worked into the timber in the direction of the floorboards. The floating soap water is soaked up without completely drying the surface.The surface is allowed to stand overnight, and the treatment is repeated four or five times. Before the final treatment, the raised fibres can be sanded with a paper of grade 120-150 in the direction of the boards. A stronger treatment can be achieved by adding lime (see page 395, Recipe 5).
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