Grind the parquet floor step by step

For parquet flooring sealed with lacquer, you must remove all paint residues and primer residues evenly when sanding. For oiled or waxed parquet floors, more frequent replacement of abrasives may be necessary as they become dull sooner. We'll show you how they make grinding successful.

Dirty and exhausting

Sanding a parquet floor is a physically demanding job that generates a lot of dirt. An area grinder weighs up to eighty kilograms on average, which in some cases already poses a major challenge when transporting to the job site. In stairwells, it can only be worn by two strong adults. The permanent movement of the machine during grinding must be ensured, so that the working time should be planned accordingly generous and with sufficient rest periods. The daily surface should be calculated with up to twenty square meters.

The fine sanding dust penetrates through every crack and gets stuck in every corner. Apart from a respiratory and eye protection, the room should be vacated or empty accordingly and any door slots are glued. For regular disposal, a vacuum cleaner with a sufficient number of spare must-bags should be kept ready.

Grinders with suction device

Sanding the parquet floor can be made much easier by using sanding machines that have an integrated suction function. Both surface grinding machines and edge and corner grinders can lend equipment with this equipment. The labor savings is worth the higher rental price, because in addition to the much simpler final cleaning and the intermediate cleaning during grinding in less time are feasible. This also increases the life of the abrasive, which do not clog with wood or paint dust and quickly dull.

Step-by-Step Guide

  • surface grinding machine
  • Edge or corner grinder or
  • sander
  • abrasive
  • vacuum cleaner
  • respiratory protection
  • safety goggles
  • vacuum cleaner
  • Pincers or screwdrivers

1. Make the parquet floor accessible

Remove all furniture, carpets and other furnishings from the room where you will be sanding. Dismantle the baseboards completely and number them on the back, so you can easily put them back in the same order later.

2. Plan the grinding path

In order to be able to carry out even sanding optimally, you should first think about the path you want to go with the sanding machine. A good finish is mainly due to the smooth movement of the abrasive across the floor and should not be interrupted.

3. Start the grinding machine

Prepare the power cable according to your planned grinding path so that you will not get in the way later. Roll the tilted grinder to the starting point and carefully set it down. Immediately when switching on, you start to move the machine in a circular motion in a clockwise direction over the parquet floor.

4. Always keep moving

At each stop of the grinding process you must remove the sanding underside of the machine from the surface of the parquet floor. In case of brief interruptions, tilting on the rollers is sufficient, otherwise the machine should always be switched off.

5. Use the same abrasive

Depending on the grinding stage, you will have enough ready-to-use abrasives for both corner and surface grinding machines. Different grains create an uneven sanding pattern on the parquet floor.

6. Slide instead of pressing

Let the surface grinder slide over the floor and do not push it. The dead weight of the machine generates enough pressure and you do not increase the grinding speed by applying force.

Tips & Tricks

Intermediate cleaning during grinding increases the life of the abrasive. The fine wood and varnish dust that is produced during sanding quickly increases the grits of the abrasives. After the grinding of three to five square meters, they should each absorb the dust formed or wipe it up with a damp cloth. For grinders with suction that is not necessary.

Video Board: Sanding and Refinishing Hardwood Floors (step by step)