What is an Intercoat Coating
Definition – What does Intercoat mean?
Intercoat refers to the coat between the substrate and topcoat, or between any two coats. Normally, the topcoat is applied on the primer and an intercoat coating exists in between the topcoat and primer. The topcoat bonding with the intercoat or substrate depends on intercoat adhesion. Poor intercoat adhesion causes coating failure and leads to corrosion.
“Intercoat delamination” occurs when the adhesion of the underlying coat fails to adhere.
Intercoat delamination refers to a type of coating adhesion failure where two layers of coating do not stick together, causing the coating to break or peel. As a result, the coatings fail to provide their intended protective value or aesthetic appeal1. This issue often arises due to mistakes during application or errors in assessing compatibility between different coating products. To prevent intercoat delamination, it’s crucial to consider factors like surface contamination, proper priming, acid etching, and avoiding excessive moisture or incompatible coatings. Understanding molecular interactions between coatings helps ensure better adhesion and prevents delamination
An example of an intercoat.
EASY BOND which bonds to permanent formwork like Dincel & Rediwall. Apply Other finishes to the original with other preparation e.g. without scuffing the surface.
Reference:- Definition via Corrosionpedia