Both spellings are grammatically correct. Although “mould” is most commonly used in the UK and Australia, while “mold” is most commonly used in the US. The meaning remains the same; they are both relating to living organisms known as fungi. You’ll notice on our website that we use mould and mold interchangeably throughout – it’s not a mistake, it just makes it easier for our visitors to find us online. 

For more information on mold, the causes and the risks, click here.