I have mentioned this series before.
I think his assumptions about why newer materials (Portland cement, fiberglass insulation, latex paints) have replaced traditional, longer-lasting and sometimes superior products (lime mortar, wool building insulation, linseed oil exterior paint) are a bit too conspiracy-focused but I have looked up some of his claims (lime mortar is superior to Portland cement in handling water problems and is self-healing; sheep wool is "high efficiency, high fire resistance ability, long lifespan") and he seems to be right. In some cases, the older materials have different problems: sheep wool is eaten by some insects.
Still, well worth considering for your post-apocalyptic planning.
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