Reference Material
Surface Preparation
Lack of surface preparation is the key reason for adhesion failure.
Remove dirt, grease or moisture from surface to be sealed or bonded. Allow surface to dry thoroughly.
Surfaces can be difficult to adhere once they receive sanding or chemical treatment. Minimize use of these and similar processes. Priming these surfaces before applying sealants can aid in adhesion.
Suggested application thickness is ¼” (6mm) or less.
Length of time for full cure depends upon thickness of application and other factors including temperature & humidity.