ALF upgrade adds moisture
BRANZ’S Annual Loss Factor (ALF) tool – a free online aid to the thermal design of houses – has a useful new feature, a ‘moisture tab’ for predicting potential mould issues in residential designs.
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BRANZ’S Annual Loss Factor (ALF) tool – a free online aid to the thermal design of houses – has a useful new feature, a ‘moisture tab’ for predicting potential mould issues in residential designs.
How much ventilation, heating and insulation is required to avoid condensation and mould? The new moisture tab in BRANZ’s online energy calculator, ALF 3.2, has the answers, but how does it work?
ALF has been the topic of many calls to the BRANZ helpline recently. This overview should get you started with ALF 3.2, and future issues of Build will answer some of the more detailed questions asked.
The last Build (October/November 2009, page 34) introduced ALF 3.2, a free BRANZ online aid for the thermal design of houses. Questions from ALF 3.2 users continue to flow into the BRANZ helpline, and some common questions are answered below.