The environmentally friendly Perma-vent contains no moving parts and requires no maintenance. It works on the scientific principle that when the room temperature and humidity are greater internally than those externally moist air is ventilated outside the building due to vapour air differences.
The Perma-vent contains a vapour permeable membrane, this means vapour is allowed out of the building without allowing a draught back inside.
The unit is easily and economically installed using a 4.25” core cutter, positioned wherever condensation/mould is most prevalent. The thickness of the wall does not present a problem the standard unit is supplied with a 13" long ventral core which will accommodate most properties.
The unit is designed to be very unobtrusive, with a 6" internal white plastic grill. Externally all that can be seen is a 6" white plastic external grille.
It is possible in severe instances that a more advanced condensation control unit will be required to remedy the condensation. However the installation of a Permavent Standard is a simple, inexpensive, starting point to tackle the local problems of condensation and mould.