Can you apply roof coating in the rain?

This part is a little more technical, but we have experts who can help. The roof coating must be applied to a specific mileage. It is best to use a firm step when applying it to ensure that the coating is applied evenly. We also recommend stopping frequently and using a wet film gauge to measure the thickness of the wet film.

When applying Acu-Shield, for example, the thickness of the wet film should be a minimum of 20 thousandths of an inch wet for each layer, and each layer should cure for 24 to 48 hours. If it is not applied with the correct mileage, you risk voiding the warranty on the coating product. To ensure that the roof covering works at its best for the next few years, the first step is to properly prepare the roof.