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The paper deals with the durability of experimental emulsion-based systems on wood exposed to weathering for a period of 3 years.
A number of oleo-resinous and emulsion-based primers were applied to two different types of timber and overcoated with both conventional oleo-resinous and emulsion-based topcoats.
Four different exposure sites representing four different climatic regions were chosen to allow a study of the influence of the following on the durability of the coating systems: the composition of the paint system, the primer formulation, the topcoat formulation, and the climatic conditions.
It was found that emulsion-based systems could be more durable than the more conventional systems.
paint systems, paint formulation, emulsion paints, oleo-resinous paints, primers, topcoats, timber, Pinus Insignis, meranti, moisture content of timber, toxicity, cost saving, grain raising, mold growth
Senior technical officer, National Building Research Institute, Council for Scientific and Industrial Research, Pretoria,