Thermal mass can have a positive or negative influence on the thermal performance of a building depending upon how it is used.

We are encouraged to insulate and double glaze our homes and even to add thermal mass.  While a bare minimum of each is not good, how much and in what proportion is best? 

ALF (Annual Loss Factor) thermal simulation software, used to show compliance with NZBC-H1, was developed to analyse stand-alone houses, not for dwellings with party walls or within multi-unit developments. 

Introducing a new Detailed blog covering the many aspects of passive thermal design relating to the built environment.