The latest and most effective method of dealing with condensation is a whole house Intelligent Positive Input Ventilation unit (I-PIV). What is I-PIV? An I-PIV is a method of removing the moist air that is causing your damp problem. It does this by taking dry air from your attic, roof space or loft, which is then mixed with the moist air, and then pushed out of the building through window and door vents, and air bricks. This improves the air quality, and circulation air is pu