The key piece of equipment is a moisture meter:
The moisture meter measures the moisture content of the boards to be painted. The rule that we used based on our research was no painting on wood with a moisture content of greater than 12%.
After five years the requirements seem to be proving to
be a good method for a wet climate:
Examples of Various Moisture Situations on Exterior Paint
1. Paint on wood with excess moisture content. First stage
blistering:
2. Moisture penetration from within or behind the wood surface:
3. Paint lifting old paint that was not completely removed:
