- Grouting is a bore-and-puncture based method used to treat built-in structures that are either healthy or partially infested by wood-decaying insects. The wood is punctured and a protective substance is injected or squeezed into the pre-drilled holes to penetrate the surrounding timber parts. Moderate overpressure should be applied to squeeze the substance into the holes (using a pump or air pressure).
This technology can be used to impregnate all built-in timber elements. The system of holes must be designed in such a way as to reduce the mechanical properties of the timber, while also ensuring that the impregnating substance is properly distributed throughout.