Wood processing industrial enterprise wants to cut down costs of interior door manufacturing by changing the finishing process. The current finishing procedure consists of 2 passages through the roller coating installation. In the new procedure, only 1 passage would be performed, with a maximum possible effectiveness, reduceing the production costs. In this way, the quality would remain unchanged or even improved. The results of the both application procedures were compared. It was concluded that the proposed technological change with a single passage through the roller coating installation does not affect the quality of the surface coating system. Manufacture costs of new system are also lower than those of the current technological process.