What US jurisdiction first published insulation value tables – for new homes – in a building code?
I am researching energy efficiency objectives in codes and regulations, in Canada and the US. The first Canadian residential insulation value tables appeared in the (provincial) 1975 Ontario Building Code. I know that California’s 1978 “Title 24” introduced even broader energy conservation measures. However, I do not know what US jurisdiction (state or city) was the first to publish insulation value tables for new homes, in a building code. I would appreciate your suggestions …
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