Breaking the mould - part V
In this fifth & final article in the series, Joseph Little compares simulations of several internal insulation options on common wall types, with worrying conclusions.

An experienced timber framer with an eye for detail, Tim O'Donovan set about building a low energy stick-built home in the Cork countryside and achieved a staggering level of airtightness.
Words: Lenny Antonelli

External insulation examined: the reasons why placing insulation outside makes most sense, with six example projects