Hi, Im in the middle of a kitchen renovation project at home and I am having problems with the walls. Exterior walls are 9'' solid brick and I have black jacked them (bitumen paint) to stop any water ingress in them, fixed timber 50mmx50mm battens, infilled these with 50mm Kingspan and covered with 12.5mm vapour check (foil backed) plasterboards. A few days later I noticed water dripping on floor behind plaster board. when took plasterboard and insulation off, external wall was dripping in condensation/sweat?
Is it the case I need vapour barrier as well or is there something happening with kingspan and the black jacked wall????
Is it the case I need vapour barrier as well or is there something happening with kingspan and the black jacked wall????