Extension of the Range of Relevant Environments to Validate Test Methods to Predict Microbial Attack of Water-Based Coatings

Structured materials are frequently painted with organic surface coatings for aesthetic purposes, and to afford them protection against environmental degradative purposes. The nature of these types of coatings make them intrinsically susceptible to infestation and damage by micro-organisms. The resulting repair and maintenance cost can be substantial. To develop coating systems with resistance to attack by micro-organisms it is essential that industry has efficient and effective test methods for predicting the extent and rate of such spoilage. There is a general acceptance that the existing standard test methods, for both natural-field site and laboratory simulation exposure programmes, are inadequate.

This project was an extension to the DTI-funded Test Methods to Predict Microbial Attack of Water-Based Coatings [MAWC] project and involved exposure of test panels (according to an experimental design) at additional test sites, with more varied and extreme exposure conditions. The visual fungal growth behaviour, microbial ecology and weather were recorded with a view towards a better understanding of the factors influencing fungal growth and improving the standard test methods.

Further Information

If you are interested in this, or any other project, please contact Richard Holman.