The treatment of a surface should be carried out during a period when the surface is dry, preferably in the summer. The temperature does not matter too much, as long as it is some degrees above freezing. Paints with natural oil binders should not be applied at temperatures under 5 °C. Painting carried out in autumn often seems to last longer than painting done during the summer, probably because the paint has dried more slowly. In hot sunny weather paint can easily crumple, because of tension between the different coats.
It is important to choose the right paint for the right surface. Wood, for example, is an organic material that is always moving, swelling in damp weather, or drying out and shrinking in dry weather, and these properties must be taken into account.
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