To protectively protect a garden fence


Most garden fences are made of wood. Since such a wooden garden fence is naturally outdoors, it is fully exposed to all weathering and other stresses. This means that you have to protect your garden fence in several ways. In addition, for many people, the appearance of the painted fence is also important, be it transparent, semitransparent or completely opaque. Afterwards you will receive valuable information about what you have to consider when painting your fence.

Wood - an organic building material

Wood is an organic product. This makes it extremely safe against many influences. In particular, if it is an outdoor fence, you must consider all these factors when choosing a suitable wood preservative. Among the influences against which you must protect the wood of your fence include the following points:

  • Weather influences such as rain, heat, cold, frost
  • the UV radiation of the sun
  • against organic hazards such as blue staining (fungal spores) and other microorganisms
  • Insects like beetles and ants

Weathering factors that you have to consider when using the wood finish

Too wet wood (even dry wood still has the necessary humidity of the environment) swells, warps and begins to rot. Therefore, you must protect it accordingly. However, the water also washes out lignin. Lignin is like wood for wood, holding everything together. This should protect your wood against moisture penetration, but in such a way that the basic moisture balance can still be regulated. This can be achieved by impregnation in conjunction with a wood preservation glaze that is permeable to diffusion.

Use a wood finish that neutralizes UV radiation

The UV radiation has a similar effect as water, which washes out the lignin from the wood. The radiation does not flush it out, but it destroys the lignin. The UV radiation protection in a wood preservative converts the dangerous radiation into harmless heat. So the UV radiation protection is absolutely important. Unprotected wood that has lost its lignin through water or UV radiation, you recognize first by an increasing gray color. In addition, the wood becomes brittle and brittle.

Protection against organic hazards to the wood

Then spores and other microorganisms could attack the wood even better. But even if the wood is still intact, there is an explicit danger that a blue sparkle will spread. Accordingly, biocides must also be included in the wood preservative.

Insects like ants, beetles, larvae

Basically, you can assume that if wood has a strong insect infestation, it has already been sustainably damaged in advance. This means that the wood (apart from woodworms) is in a state where painting the fence would not be worthwhile anyway.

Thick-film and thin-layer wood preservatives

The wood preservatives distinguish you from thin and thick-layer wood preservatives. If you want to preserve the grain (transparent or semi-transparent in a shade of brown), it is usually thin-film wood preservative. Only these wood preservatives can actually penetrate the wood (up to 10 mm) and protect it sustainably. In contrast, thick-layer wood preservatives are like a seal on the wood. If you paint such a wood preservative, you must first apply a primer, which penetrates into the wood and impregnated it so.

Synthetic resin paints

You can also use appropriate wood preservative paints. However, they could react chemically with the resin of the wood and damage the paint. Therefore, even when painting such paints on wood a primer is essential.

preparatory work

The preparatory work before painting the fence is easy. First you have to sand the wood and clean it. But if old paints and wood preserving varnishes are not found on the fence, they must first be laboriously and completely removed. It is also important then the final cleaning of fats before painting the fence.

Tips & Tricks

Only use wood preservatives that are actually identified as such. In addition, mostly more expensive branded products are significantly higher quality than cheap goods. This will keep paintings longer and you will definitely save more money in the long run.

Do not use wood preservatives that have been released for outdoor wood, in any case in the home, unless (for brand name products) there is a clear release that completely excludes health risks.

If you want to paint a fence made of metal, you will find in the house journal also numerous instructions and guides, for example, for [painting of non-ferrous metals], aluminum or conventional metal.


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