Painting and Coating
The main benefit of dehumidification is the ability to control the work environment. This can be economical for a contractor and result in a better coating application.
Contractors benefit from dehumidification equipment by reducing downtime. This is required when strict quality parameters are to be maintained while coating of tanks, pressure vessels, columns, reactors etc.
There is no need to wait when ambient conditions are out of specification because the environment inside the work area is controlled.
Productive work can begin first thing in the morning, especially in the spring and fall when dew normally forms. It also eliminates days lost due to rain.
Maintaining the relative humidity below 50%, or the surface temperature 6 degrees C (10 degrees F) above the dew point will control rust bloom on a blast-cleaned steel surface for a week or two. This allows the contractor to blast clean the entire surface (or large portions of the surface) continuously without the daily stop for clean-up and priming.
Putting on the primer in one application prevents blasting particles from landing on the surface primed the previous day and allows the primer to be applied as one continuous coat. There are situations where use of dehumidification is essential. An example is Tank blasting and painting.
Putting on the primer in one application prevents blasting particles from landing on the surface primed the previous day and allows the primer to be applied as one continuous coat. There are situations where use of dehumidification is essential. An example is Tank blasting and painting.