Mould in rented properties is usually caused by condensation as tenants are less likely to open windows during cold weather, mould is a particular threat during the winter as a lack of ventilation will lead to increased condensation, while the improved energy efficiency of modern properties makes it more difficult for moisture to escape, exacerbating the situation.
Signs landlords can look out for to spot high levels of condensation, including streaming windows and walls, damp areas starting to appear and a constant musty damp smell developing.
If mould does occur, it will most likely first appear on window frames, walls and ceilings as well as soft furnishings.
Landlords can reduce the chances of condensation and mould becoming a problem by insuring they have good ventilation installed in the property. Installing extractor fans in the bathrooms and a ventilation unit in the loft area will solve most condensation problems.
By gently introducing fresh, filtered air into the home at a continuous low rate, the relative humidity levels are reduced. Asking tenants to keep the inside temperature reasonably constant for as much of the time as possible and to keep furniture away from walls will also help in properties where condensation is a problem.