When the colder months arrive and temperatures go below zero, the moisture and humidity leaking into your loft will accumulate and condense on the underside of your sub zero temperature roofing membrane. Depending on the temperature, ventilation and insolation (i.e. can the sun get to your roof) you will have either frost (known as ice damming) or water collecting. If you're baffled by frost and condensation only seeming to form on one side of your roof, you're probably looking at the North side. The sun will often warm the South side enough to thaw and evaporate moisture effectively but still leave it coated on the North side. The problem then is that while insolation has dealt with South facing frosts through evaporation, the unintentional consequence is that your North facing roof space has been warmed up enough to melt the ice - but NOT enough direct heat for effective full evaporation. Hence the' indoor winter waterfalls'. Adequate ventilation, prevention of air leakage, proper roof insulation and having us install one of our state of the art heated PIV units should not only eliminate this, but also, your entire property's condensation and mould problems.


