Delete larch wood

Even larch wood is a not unproblematic type of wood when it comes to painting and glazing. Why this is so, and which special properties you always have to consider when painting larch wood, can be found here.

Difficult properties of larch wood

Larch wood makes two problems when brushing: on the one hand it can be very resinous (which is not the same for every piece of larch wood) and on the other hand larch wood also naturally contains a lot of tannic acid. Both make opaque coatings not easy.

Protection requirements of larch wood

Larch wood is by nature extremely weatherproof and durable. A coating for weather protection will not be necessary in many cases, the life of larch wood is untreated even enormously high. A paint or a coating for weather protection is usually not required for larch wood when used outdoors in high-quality wood.

Protection from graying

However, over time untreated larch wood gets a certain patina. This silver-gray surface layer is not a sign of decreasing wood quality, but a completely natural process. The wood protects itself against the effects of weather and UV radiation. To prevent graying, the wood must be painted to protect it from UV radiation. Then this natural process is stopped.

wood quality

However, there are differences - such as the alpine larch, beaten at the right time and from an optimal location, usually much more durable than the lowland larch. These differences should also be considered. It is simply about wood quality.

When painting, glazing and pickling pay attention

Oil varnish and polyester-containing varnishes can usually not be used because of the resin content of larch wood. Specially resinous woods often cause problems with other types of lacquers and glazes, in these cases one should refrain from working better because the result is usually not good. Even when pickling you have to be careful to make a special pretreatment with resin-soluble agents. The best way to get advice in the timber trade on suitable products.

tannic acid

To prevent problems with the tannic acid, you should either use suitable and proven products, or let the larch wood "weather off" outside for a few weeks to half a year before painting. The duration of the weathering depends mainly on whether you want to preserve a light, little weathered wood tone, or the resulting patina then then disappears under the paint anyway.

Suitable color

With the selection of a suitable color you can do without it. Tannic acid, in particular, causes problems with the drying properties of most varnishes if they are too abundant in the wood. This uneven drying can also lead to a less beautiful color result.

Tips & Tricks

Weatherproof and durable is always only heartwood! In any weather-resistant species, this is never true for sapwood. It must be provided with virtually any type of wood with sufficient protection. This also applies to larch wood.

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