Blower Door Testing can help identify and resolve the following:

1. Uncontrolled ventilation
In Australia, new and old homes can be extremely leaky compared to homes built overseas. As a result, our buildings are “automatically ventilated”. Over-ventilation can contribute to moisture problems, as it can be carried inside from outside air, people also producing more water vapour, by human activity (showers, washing and cooking) which contributes to moisture problems again. That means that you still must ventilate, but we must ventilate more effectively. Permanently open or louvred windows should be avoided, otherwise, your heating costs are going to go up dramatically. A controlled ventilation system (via Energy Recovery Ventilation systems) is the optimum solution. It always provides for the perfect air change.

Small leakages in the building envelope and a lack of insulation are sufficient to let warm and damp indoor air escape. On its way out, the air cools down and the water vapour carried along with it condenses. This condensation can accumulate in the insulation layer and can lead to mould infestation after a few months. Mould can cause damage to certain building materials and therefore can lead to serious building damage. This is why an air and windtight building envelope is absolutely necessary, for building health and energy efficiency.

Windy days can compromise accurate results from a blower door testing service, so it’s important to consider weather conditions on the day, that you are Airtightness testing and draught proofing your home.