Impregnation: paints for the protection of wood

Since wood has been discovered as a raw material by humans, there is a desire to color this natural material and protect it. A pure weather protection with paints does not protect against fungi and insects, since the necessary for wood preservation biocidal agents are missing. As a result, wood preservation is always an introduction of biocidal active ingredients into the wood.

Synopsis: Wood preservatives are very different in nature. Starting with large-scale impregnations to glazes. But even with the glazes there are application differences, which must be considered.

Wood preservatives

Wood preservatives for load-bearing or stiffening components require one Approval by the German Institute for Construction, For non-structural components, only wood preservatives with the RAL quality mark be used.

That brings more security for the Consumers, as this quality label only with the consent of the Federal Environmental Agency and Federal Institute for consumer health protection and veterinary medicine. In Living spaces is the use of wood preservatives prohibited.

Logically, their extends Use on the outside, with weathered wood surfaces in focus the wood protection stand.

Impregnation basics

Impregnation: paints for the protection of wood: paints

Wood preservatives are very different in nature. Starting with large-scale impregnations, such as pressure impregnation or impregnated trough impregnations, whose Products mostly ready impregnated offered be (timber or palisades), the offer extends to impregnating.

Glaze-transparent paints

Glazes as transparent paints leave the Natural wood fully come into its own. They are a welcome means of underlining the grain of the wood.

Colorless and too low pigmented glazes are for the weathered outdoor area not recommended because the UV radiation of the sun penetrates the glaze surface and leads to graying the wood surface. Short renovation intervals are the result.

Thin-layer glazes with biocidal active ingredients are particularly suitable for the protection of non-dimensional components. Wood protection and decorative design can be done with a product. The open porosity of the wood is preserved, the Moisture balance of the wood can take place unhindered and the paint does not flake off.

Wood preserving impregnation with opaque paints

With a covering paint, that is, the grain of the wood is no longer visible, a wooden surface can get almost any color. It should be noted, however, that opaque paints not at the same time wood preservation impregnationn are.

The coating of softwoods with opaque paints, requires the unconditional use of a wood preserving impregnation, These impregnations are in most cases solvent-containing, colorless and at least bleach-resistant.

Bläuepilze are indeed "only" wood-discoloring fungibut can effortlessly pierce and destroy a covering coat of wood. For opaque paints, as well as for coatings with impregnating stains, however, it should be noted that the different shades also result in different surface temperatures under sunlight.

For example, temperatures of 60 to 70° C are not uncommon in dark colors. For example, this can be unintentionally low in softwood Wood moisture and as a result of the associated shrinkage to dry cracks to lead. Wood species and color should be coordinated with each other.

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Video Board: High-quality tank pressure impregnation; Tank vacuum pressure process, Kora® Wood Protection