While quite a bit of what you say on your site is true, you have included a fair bit of BS. Dampness did exist before Portland Cement, Modern Paints and Gypsum Plasters. You should have gone the whole hog and said that dampness was due to 'slight wetness'. The reason that humans relinquished caves to the wild animals and moved to man-made buildings was because they were more comfy. The reason that people moved from stone houses with lime-based infil and lime plaster was because it was more cost effective and comfy. Heritage afficinados, granolas and just plain angry people rail against modern building methods. Ask any medical people, if 20th century housing has contributed to the nation's life expectancy, then sip your mead as you read the report.