The passive house methodology has become the go-to standard for build a new home, a renovate one, to be energy efficient; Seán McKenna of the Passive House Association and South West College chats to construction expert John Corless about:

·      How much more passive houses cost than building regs compliant homes

·      The five passive house principles

·      What to do for ventilation in the case of a renovation project

·      What happens to ventilation in the case of power cuts

·      Easy wins when retrofitting

·      Upgrading with EnerPhit

·      Dangers of insulating internal walls

·      Period home renovation tips

·      Double vs triple glazing, issues with roof windows

·      Do you reduce window spec to reduce solar gain?

·      New builds: how to distribute solar gains around the house

·      How to cut costs without cutting corners: achieving space efficiency

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