He Brizzylions, I agree with Jimmy. As I am new to strata, I don’t have any direct experience but my ex husband had a similar issue in a flat he leases. Tenant complained about the dampness and mould. My ex responded by giving the tenant a rent discount, as he assumed he was responsible. In hindsight he should have got the owners corporation involved by investigating the matter as it could not be the result of anything the landlord or tenant did.