No house is so old and draughty that air leaks can provide enough fresh air for good healthy living. Here's why to retrofit to ensure better indoor air quality in your home and some examples of solutions.
Envirotecture director Andy Marlow carried out data-driven retrofits to improve indoor air quality in his Sydney terrace home. He outlines the problem plus some solutions and benefits in this article in Sanctuary magazine.


Andy joined Dick Clarke at Envirotecture as a young architect, gaining significant experience in designing genuinely sustainable buildings, both residential and non-residential, in Australia and overseas. After a stint at a large corporate practice, Andy returned to Envirotecture as a director in 2014. He went on to found Passivhaus Design & Construct in 2020, in order to make Passivhaus performance more accessible for more people.
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