Food production is highly sensitive and it is important to ensure that hazardous contaminants, including dust, fibres, mould and volatile organic chemicals, are not able to migrate into food during production. Preventing the growth of dangerous mould and bacteria is especially important and all surfaces in food production locations, including the exposed surface of insulation, must be easy to clean and maintain. Since specialist cleaning detergents are used in addition to water any insulation used cannot absorb or react with these chemicals.
Closed cell foams have a natural advantage over sponge like open cell foams but in food preparation locations even closed cell foams should be covered with an additional cleanable surface. An additional risk to mould is fibre contamination. Artificial industrial fibres not intended for human consumption can settle on food during production, ultimately contributing towards various long term health problems. This is not possible with fibre free closed cell foams and no specific precautions are necessary.
Insulation should be present on pipework in food production locations that is able to demonstrate the following attributes: