Typical thickness of #CavityWallInsulation in Finnish buildings built in 1972-1984.
#EnergyEfficiency is significantly better in newer homes
#Weatherizing
From: https://www.ymparisto.fi/download/Energiatodistusopas_2018_Vanhojen_rakennusten_tyypillisia_suunnitteluarvojapdf/%7BA6558C5F-9B2E-40E5-B261-605118163F03%7D/141252