Oiled parquet has stains - experiences?

Three years ago, I had layered parquet with underfloor heating installed in my new build, which was initially oiled three times with Osmo hardwax oil. Meanwhile, I have many ugly stains, especially in the kitchen and under the table. The parquet is alarmingly sensitive when it comes to (water) stains.

How can I restore the parquet to good condition? I would rather not sand it because the top layer only allows sanding once. After just three years, that is too early for me.

Do I simply apply a new layer of oil over the stains? Or do I need to treat the stains first? The water stains are darker than the parquet but not black oxidized. The grease stains are also darker but without oxidation. So I have wood-colored but darker stains all over the floor.

I hope someone here has experience with this. Thanks in advance!

The floor already looks extremely worn after such a short time. Haven't you actually maintained and/or oiled it in the meantime?

I would simply re-oil (hard oil or hard wax oil). This will make the leached wood significantly darker and enhanced again, so that the stains are less noticeable or hardly noticeable at all.

I put wax in the windshield washer, but only wiped about every 4 to 6 weeks. The stains appeared quite quickly from the start. But not as quickly as now. I urgently need to oil again. Thank you for your tips!

He is open-pored, these floors are very sensitive. I once had an open-pored wooden table, and after a while you could see every grease stain. Somehow you could rub off water stains. I then oiled it heavily. I cannot recommend that, because you then had a greasy surface for weeks. So oil, but only according to instructions. My table experience led me to choose a lacquered parquet.

Good luck, it would really be a pity if you had to look at the floor carefully - because it basically has a nice color.

Good luck, it would really be a shame if you have to just look at the floor because it basically has a nice color.

Thank you very much!

I can report that I worked on the floor yesterday. It was quite an expensive pleasure, but it was worth it. First, I sprayed all the stains with "spotstop" from Boca. It's something against grease. Very cool, you spray it on the stains. The moisture from the product evaporates quite quickly and a white powder remains that you can sweep away.
After that, I cleaned the entire floor with a cleaning agent, with "Wisch-Fix" from Oslo. Although I put much more into the cleaning water than the usual dosage.
Afterwards, the floor already looked good but was still dry.

And then in the evening, I oiled it (more precisely, hard wax oiled it). This morning everything already looked very good. The floor is walkable.

Unfortunately, you can see the roller marks here and there. Now I'm wondering if I should put another layer of hard wax oil on it. What do you think? Would that be a solution against the roller marks?

Hello Bertram100 This stains can be removed with pipe clay (diatomaceous earth) and stain gasoline. To do this, proceed as follows: make a paste with pipe clay and stain gasoline, apply it to the stains and let it sit for 6-24 hours, then wipe off the powder. This method is simple, does not affect the parquet in any way, and can be used without further precautions. Both ingredients are available in every pharmacy or drugstore (at least here in Switzerland). Best regards