By brush treatment water- and solvent-based products were applied on boards of Scots pine and Norway spruce to achieve an uptake of 100 and 200 g/ml. In addition the scope of work to achieve the required uptake of preservative was determined under practical conditions for both product groups. EN 113 (RAL-GZ 830) tests were carried out to test the biological efficacy of products. After 18 months exposure to outdoor weathering, physical tests were carried out to evaluate the properties of the paint-film. Results of physical tests show the influence of binder-type, binder-content and paint-system on the long term stability of products. The scope of work to achieve an uptake of 100 and 200 g/m² for solvent based products is approximately two times higher than for water based products. EN 113 (RAL-GZ 830) tests with solvent based products demonstrate that contrary to water based products, the amount of applied preservative has a considerable influence on the results. Weight loss measured in accordance to the RAL-GZ 830 regulations demonstrates that for nearly all solvent based products an uptake of 100 g/m², for water based products an uptake of 200 g/m² were sufficiant to protect the wood against Gloeophyllum trabeum. Except for three tested products with an uptake of 200 g/m² neither product protects the wood against Poria placenta.

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