Filling joints in wooden floors - step by step instructions

Many older wooden floors have very wide joints between the individual planks. Dirt and dust collect in it, which is a pain not only for allergy sufferers. Over time, the planks will shrink and the joints may even get wider. But if board is to board, the wooden floor squeaks. Here you will find the instructions to fill the joints flexibly.

Decorative strips

If the wooden floor is to be given a different decor at the same time, the joints can be filled in a contrasting color. However, you then have to work particularly precisely. In this case, it is recommended to mill out the joint so that it is evenly wide everywhere.

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Select method

If the joints are rather small, but distributed over the entire floor, you can use a joint putty for wood that is mixed with the sanding dust. The joint filler has the same color as the wood and adapts perfectly to it. However, this rather fluid variant is not suitable for wider joints, as it runs through and can even run under the wooden floor.

Fill the joints in the wooden floor step by step

  • Liquid grout
  • Cartridge joint compound (€ 6.99 at Amazon *) color-coordinated
  • Wood lacquer / wax / oil
  • Cartridge gun
  • Grinding machine
  • Spatula different widths
  • Plastic scraper
  • screwdriver
  • Vacuum cleaner with crevice nozzle

1. Remove baseboards

The room must be completely empty before you start work. You shouldn't work piece by piece, but always work on the entire floor. So that you can sand to the edges, the baseboards must first be removed. You can use these again later, so you should work carefully.

2. Sand the floor

You can sand the floor in a small room with an orbital sander (€ 72.99 at Amazon *) or an eccentric sander, but it is usually faster with a floor sander that you can borrow from the hardware store.

3. Fill in the joints

Always use a special product for wood to fill the joints. At first, silicone can work, but wood and silicone don't combine as well. The grout for wood is also available in many common wood colors, which makes the floor particularly harmonious.

Use the cartridge gun to press the joints full of the mass. Always try to work through one complete joint at a time. You should remove any protruding grout immediately with a scraper.

4th. Paint or wax the floor

If you want to paint or wax the floor again after the drying time, you should pay attention to the compatibility of the product with the grout. It is therefore ideal if both products come from the same manufacturer.

Tips & Tricks If you would rather have a seamless wooden floor instead of flexible joints, you can insert wooden strips in the joints. This variant is much more complex, however, since the joints must first be completely brought to the same width. Then wooden strips are inserted, which can be either in the same wood color or in a different shade as a contrast.

However, if you don't work properly or if there are strong temperature fluctuations in the room in question, the floor will probably creak later.

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