Hi Peter,

Thank you for your question.

We do not sell Tempur products and are not able to provide specific advice with regard to your query. Having said that, mould does form where there is an excess of moisture in the air and whilst I cannot answer your ventilation question, I would suggest using a dehumidifier to remove the moisture from the air and keeping the room well ventilated when not sleeping on the bed. It may be worth contacting Tempur directly and posing the question to them.

Kind regards Julie