Presenters Name: Kevin Roden

Employment Title:  Technical Sales Support Specialist

Company: Arxada

Biography: Kevin Roden graduated from the University of Sydney with a degree in Microbiology and Pharmacology. He has had extensive experience in microbiological testing and has been employed as Manager for two consultant Microbiological Testing Laboratories and Quality Assurance Manager for a vaccine manufacturer. Kevin has been involved in the coatings industry for over 30 years while working for biocide manufacturers, recommending biocides for varying applications and evaluating their performance in industrial and personal care products. Kevin is currently employed by Arxada in the position of Technical Sales Support Specialist to assist manufacturers to select the best biocide options for their products and to help overcome any microbiological problems they may encounter. Kevin is currently the Technical Secretary for the Dry Film Working Group of the International Biodeterioration Research Group.

Presentation Title: The Protection of Coatings from Surface Fungal Growth

Presentation Abstract: Fungi are a very diverse group of organisms ubiquitous in the environment, they can present as microscopic or as fruiting bodies with underground systems that extend over hectares. While some species can be detrimental to humans, animals and plants, due to their vast diversity, fungi occupy different niches in nature and are responsible for important ecosystem services, which benefit humans and the overall ecosystem. They are an important part of soil biodiversity, and are closely interlinked with vegetation and carbon and nutrient cycling. They can also be an important food source much sought after by the gourmet and specialist markets.
Fungi have developed metabolic pathways to utilise an enormous variety of substrates enabling them to grow on both natural and synthetic surfaces, including applied coatings. Fungal growth on interior surfaces results in unsightly staining and unpleasant odours and may lead to the destruction of interior surfaces, furnishings, clothing and footwear. More sinisterly though, unseen biotoxins released by some mould can cause Chronic Inflammatory Response Syndrome (CIRS) in susceptible individuals and long term exposure has been suggested a link with Alzheimer’s, Parkinson’s and Multiple Sclerosis.
The reduction of moisture in a building is critical for controlling mould growth, and ingress of water from leaking roofs or pipes requires proper repairing. The buildup of moisture in a building form condensation and habitation can be sufficient to allow the growth of fungi. The use of specific fungicides added to a coating or sealing materials will assist to control the growth of fungi in these situations that occur in all homes.
The paper will outline the problem and include solutions to control surface fungal growth. It will cover available fungicides, problems with their inclusion along with changes in regulations that limit their use.