Symptoms

The bleeding through of contents of the substrate through existing paint layers or systems.

Cause

• Certain timbers such as Merbau, Oak, meranti or mahogany are prone to bleeding
• Chemicals within timbers prone to bleeding (i.e. timbers with a high natural extractive content) are mobilised by water
• Colors from previous coatings such as bitumen or creosote can bleed through.

Solution

Clean the paint surface to make sure that the bleeding components have been removed.. Subsequently apply a fresh paint system. Apply sufficient layer thickness to prevent water from dissolving the bleeding wood content. Apply a full primer coat of [Onol resp. Rubbol Grund HS]. Finish with one coat of [Rubbol AZ HS].