Condensation control

Condensation is often one of the most intractable of problems. However, generally in dealing with this problem it is necessary to consider heating, possible cause of the high humidity, methods of ventilation to remove moisture-laden air, and ways of insulating cold surfaces.

Wherever condensation occurs persistently on wallpaper, paint or fabrics, a growth of mould is sure to appear. Penicillium and Aspergillus species are very common. Moulds are fungi, which germinate from spores carried in the air on to almost any damp surface. For active growth to occur mould requires an atmosphere at a minimum relative humidity of 75 per cent, but most fungi thrive at 80% R. H. or higher. The presence of moulds on paper and paint therefore is an indication of local humid conditions.

To control condensation efforts should be made to:

1)Warm cold surfaces or at least to keep the air moving over them
2) remove as many sources of water vapour as possible, and
3) ventilate to replace the wet air by fresh dry air.

Whatever recommendations are made, however, the success of the cure often depends upon the occupier.

We offer three main solutions