On a Danish housing estate moisture sensors were installed in dwellings, partly in exterior walls and partly in attics. At each location sensors were installed within the insulation at two positions, one facing the outer cold side and the other facing the inner warm side. The exterior walls and attics were insulated with cellulose, flax and mineral wool as thermal insulation. Exterior walls were constructed without PE vapour barriers while ceilings were constructed with PE vapour barriers. The investigation showed that for a typical Danish way to construct dwellings neither the moisture conditions in walls nor attics provide a risk or concern of mould growth in the thermal insulation.
Nordic Journal of Building Physics: Acta Physica Aedificiorum, 2005
Thermal insulation; Cellulose; Flax; Mineral wool; Moisture measurements; On site