Oil larch wood - what should you think about??

If the larch wood is not protected at all, many somehow have a bad conscience. Oiling can provide important protection for larch wood - also outdoors - and it also has a number of other effects. In this article you can read about what oiling larch wood brings, whether it is absolutely necessary and what things you should pay attention to.

Effect of oil on larch wood

Larch wood is relatively unproblematic and resilient in itself. The untreated wood is also usually not affected by the weather. However, if it is pigmented, oil prevents the onset of the inevitable graying of larch wood. It occurs when the lignin contained in the wood decomposes under the action of UV radiation. The wood protects itself naturally by graying, but you can see it, and that is often not wanted.

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Oil larch wood or not?

The question of whether you should oil (or glaze) depends on whether you want to prevent the wood from graying or you can live with a patina. Basically, you should only ever use oil that is specially designated for the treatment of larch wood, as it is optimally matched to the ingredients of the wood. It has the following protective effects:

  • Protection against graying
  • Surface protection from moisture
  • Protection against cracking
  • Protection against dehydration

Protection against graying

Pigments protect larch wood oil from graying. They block UV radiation and prevent the natural graying process from taking its course. In order to maintain its effectiveness, however, regular post-treatment of the wood is necessary, otherwise the protection loses its effectiveness. For most products and weather conditions, annual re-oiling will be sufficient; walkways on terraces or particularly stressed areas should generally be maintained a little more often.

Surface protection from moisture

The water-repellent effect ensures that the larch wood is not so strongly dampened and is also somewhat better protected against driving rain. This is not absolutely necessary, but it is a good additional protection for the wood. However, you should always make sure that the oil used is actually open to diffusion (most oils are anyway).

Protection against cracking

When drying the very moist wood, drying processes in the wood at different speeds, warping and cracking can occur. To avoid these visible cracks, protection with oil is recommended.

Protection of the surface from drying out

Conversely, oils can protect the wood not only against the effects of moisture, but also against drying out. If wood dries out too much, it can warp and become brittle. The risk of this is usually low with larch wood, but there is also good additional protection here.

Tips & Tricks While the heartwood is usually very resistant, the sapwood must always be protected comprehensively, as it has less good resistance and durability properties. Blue fungi also predominantly attack the sapwood.