January 8, 2020
How Does Airtightness Relate to Ventilation: A Beginners Guide When we, and a lot of the industry talk about building airtight, we often use the term ‘leaky’. But what exactly quantifies ‘leaky’ or ‘airtight’? Unfortunately, there isn’t a global standard. New Zealand’s building code defines an air change per hour (ACH) of less than 5...
Read More