As environmental factors are beyond our control, you’ll need to employ a painter who will make sure that the surface to be painted is prepared properly so that the paint film holds its integrity.
Below are the most common reasons for a paint film failure –
Timber surface is damp or wet. Make sure that the wood surface has sufficient time to dry out preferably give it time to dry on a hot sunny day. However, if wood is saturated, it will require several sunny days together to dry completely.
Unfinished Timber Exposed To Several Months Of Rain and Sun Before Painting
Continuous rain and sun exposure can degrade an unfinished wood surface; as a result wood can lose its capacity to hold a paint film. If unfinished wood has been exposed to rain and sunlight for more than 6 months simply wash its surface to remove any soft layers of degraded wood prior to priming.
Painting Timber in Extremely Cold Temperatures
Oil based paints should only be applied when the temperature is 5°C or above, while the latex paints require a temperature of 10°C and above. Weather conditions should remain constant or above these temperatures for a minimum of 24 hrs after these paints have been applied to allow them to dry off completely.
Timber was Either Too Hot When Painted or Heated Very Soon after Painting
Do not paint in temperatures 40°C and above. Painting in extremes of temperature can ultimately result in temperature blisters. The best technique for house painting is to follow the directions of the sun. Mark the east side of your house to be painted late in the morning, followed by the south direction to be painted in the middle of the afternoon and ultimately the west side in the last part of afternoon. You can paint the north side of your house any time of the day.
Painting Timber in A Humid Weather
The correct procedure for water based paints to cure is to allow the water to evaporate faster than the remaining solvents. It is only after the water has evaporated completely that the paint film shrinks into its final shape. Finally after the solvents evaporate, the chemical reactions in the paint cause it to form a hard material.But water fails to evaporate in humid weather conditions this can cause the solvents to evaporate before the water. This can cause the paint to cure with moisture trapped inside – causing permanent damage.Humid weather conditions also prove to cause havoc when using oil-based paints.