Browse Forums Heating, Cooling & Insulation Re: RBV with Summit? Double Glazing? (Perth) 4Aug 19, 2021 4:39 pm Consult an energy consultant to help you the modelling on the most cost effective ways of achieving energ efficiency before you finalise your plan to your builder. There are heaps here. Just look for them.will help you level of insulation, glazing type and much more! This is one of the reasons I decided to go overseas for my double glazed windows. As the builder indicated, he's worked on many upmarket builds, these were the most well… 13 20304 For your reference Performance Labels: Window assemblies in housing, except timber windows, must be labelled so the label can be seen when it is in situ. For timber… 6 10598 |