Bleeding

Symptoms

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

Cause

Certain timbers such as Western Red Cedar, Oak, Meranti or Idigbo 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 Problem more prevalent with water-borne coatings. Solution

Clean the coating surface to make sure that the bleeding components have been removed and apply a fresh coating system. Apply sufficient layer thickness to prevent water from dissolving the bleeding wood content. Apply a full primer. Finish with one or two coats of finish.