Replaster Bond Coat Problems

Some contractors will put a bond coat over your existing plaster without performing a quality check of the existing shell to determine if the existing plaster is loose/hollow. It is common for water to remain between layers of plaster in a pool when it is first drained. If you check a pool for hollow spots before allowing that water to leak out of the plaster layers and into the pool, the sound check for hollows will likely not reveal any hollow spots. This will cause the pool to be prepped over loose plaster, resulting in a premature failing of the plaster finish.

G&B is always asked how long a plaster finish will last, but never asked how long the bond of the finish will adhere to the substrate. That question is a very important question when you consider the increased number of types of plaster that are on the market designed to last longer than traditional plaster. If the plaster company does not perform a quality check of the existing shell, the finish will not last the 7-10 years that the plaster manufacture warrants the finish. The resulting bond failure is not a warrantable issue for the plaster manufacture. The plaster company will not stand behind the failure because they did not warrant the bond of the finish at all.