Preventing condensation can be a complex problem. The solution lies in the use of additional insulation in conjunction with a vapour barrier, such as a foil laminate or mastic.
The first step in controlling condensation is to calculate the dew point (i.e. the temperature at which condensation starts to from). Once this is done, you can determine the insulation requirements for the system that will provide you with a surface temperature greater than the dew point.
Insulco have developed an on-line calculator to help you determine both the dew point and surface temperature. Simply click on the name of the calculator you require, or go to the calculator section in the menu bar to the left.