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Also a lot of them date from the XIX century or earlier and can't be touched.

• kwhitefoot 3y ago
  Nonsense. Most of the 19th century buildings are perfectly ordinary brick terraced houses and the later ones have cavity walls. I lived in one built in 1890 in Southampton for four years. Solid house but not of any kind of historical importance. They can be insulated by blowing fibre into the cavity or filling it with expanding foam..