Repair damaged wood with resin

For a long time only known in boat building, the excellent suitability of cast resin for repairs has also become popular in other areas. Modern epoxy resins can often help to avoid more complex renovation work. As a pleasant side effect, insects in the wood are killed and kept away in the future.

Preserving instead of renewing

A casting resin can seal wood and be used as a visual or functional enhancement. A typical example is coating a table top with cast resin. Cast resin is also very suitable for repairing damaged wood. Properly processed, it can also be used as a renovation agent in building beams and roof trusses.

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In order to achieve optimal stability and load-bearing capacity with repaired wood, the motto "preservation before renewal" is to be followed as a guiding principle. Similar to dental prosthesis treatments, the liquid casting resin can best "claw " into as much of the remaining substance as possible. Therefore, special care should be taken to recondition the damaged areas on the wood.

Lengthen fiber structure

To preserve the wood substance, it is important to consider the fibrous structure of wood. The more fibers that are enclosed in the resin, the stronger the bond will be. When removing and cleaning rotted or rotten wooden components, for example, only damp wood and completely loose split pins should be taken into account.

The liquid casting resin is given a larger area of adhesion by every remaining fiber that is located at the point of contact with the wood. This also creates entanglements between the two materials, which lead to increased stability.

Impregnation and external finish

Another crucial factor for the optimal result of a wood repair is the soaking factor. The aim is to let the resin penetrate as deeply as possible into the wood. Auxiliary drilling is also successful. Some manufacturers offer two-component resins in which a type of primer with a higher viscosity is applied in the first step.

The selected casting resin should definitely be adjusted to the absorbent behavior of the wood to be processed. Not every wood can be optimally repaired with the same casting resin. An important decision is whether the wood should be completely hermetically sealed from the outside air and thus from the effects of moisture.

Tips & Tricks If you completely seal the wood with casting resin, you have to convince yourself that it is completely dry inside.