What is the minimum temperature differential required to start coating?

The minimum temperature differential required to start coating is 5 degrees. This means that the surface temperature of the substrate must be at least 5 degrees Fahrenheit higher than the dew point temperature. This differential is critical because it helps to prevent condensation on the surface of the material being coated. When the surface temperature is adequately above the dew point, the likelihood of moisture forming on the substrate decreases, which is essential for ensuring proper adhesion and the overall performance of the coating. If the temperature differential is not met, moisture can trap itself under the coating, leading to issues such as blistering, peeling, or reduced durability of the coating over time. Therefore, maintaining this minimum temperature differential is vital for successful coating operations.