Grind parquet - instructions in 6 steps

By sanding the parquet, the natural wood floor can be restored to a shine every few years. While solid wood can be sanded almost indefinitely, the thickness of the upper wear layer is decisive in finished parquet in multi-layer technology.

A few millimeters are enough

If a parquet or varnished seal shows signs of wear and tear after a few years, the depth is usually just a few millimeters, except for any particular damage. By grinding, 0.6 to 0.8 millimeters of the top layer of wood are removed, which is sufficient to completely eliminate these signs of wear. In addition to scratches also disappear spots such as water edges of flower pots, bottles or the like.

Laypeople are often tempted to sand a layer that is too thick, which can easily reach an inch or more. This costs the parquet substance without affecting the result. The problem arises in multi-layer parquet, where the cheapest products only have an upper wear layer of three to five millimeters. With this strength, the carrier layer can emerge already at the third grinding, which usually consists of chipboard at low-cost parquet.

Solid wood lasts forever

As the many age-old parquets prove, for example, in old castles or stately homes, a parquet of good quality made of solid wood can easily become several hundred years old. With expert thin abrading, only a fraction of the wood thickness is removed and some antique parquets have already gone far beyond twenty cuts.

Step-by-Step Guide

  • abrasive
  • sandpaper
  • surface grinding machine
  • corner grinding
  • respiratory protection
  • safety goggles
  • vacuum cleaner
  • Wipes, no microfiber

1. Check the parquet condition

It is best to check at the edge of the parquet with an expansion joint, which you can achieve by removing a skirting board, if your multi-layer parquet still has enough wear layer. With solid and solid wood, this step is not necessary.

2. Sealed or oiled

If you sand down a parquet-varnished parquet, you need to work the entire surface evenly. With oiled or waxed parquet, you can also partially sand off, for example, at heavily used passage points. You must, however, make sure that the differences in height when grinding off partial surfaces are not too large.

3. Pre-cleaning

Your parquet must be completely cleared of dirt before the sanding can begin. This is especially true for coarse dirt such as pebbles, sand or any small parts that may cause new scratches during the grinding process. Old parquets may have nails that you should mark and carefully avoid when grinding.

4. Move the grinding machine immediately

The moment you start the grinder, you must immediately move the machine across the floor. If the abrasives rotate too long in one place, this can lead to sanding marks, grooves and in extreme cases even burn marks. The same applies to corner grinders or orbital sanders. The sandpaper surfaces are best kept up when turned on.

5. Start sanding

The placement and immediate start of the moving of grinding machines avoids damage in the parquet, which can later be removed only with difficulty or can not be removed at all. If you interrupt the grinding, always switch off the grinding machines immediately.

6. Protective measures

Sanding parquet is a dirty and physically demanding job. Always wear safety goggles and breathing mask, work clothes and sturdy shoes. Prevent access and stay for people who are unprotected. Plan enough rest breaks to be able to actively control the uniformly rotating movements of the grinder at all times through physical strength.

Tips & Tricks

If you work with several sanding cycles, the abrasives must change from coarser to finer and finer grain size. A complete removal of the sanding dust between the sanding cycles with a vacuum cleaner and possibly damp cloths or a mop prevents sanding marks. Check every few square meters over and over again to see if your abrasives are still grindy or dull. Replace blunt abrasives or sandpaper immediately.

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