Why is there frost and ice inside my roof space?

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.

PIV Unit FAQs

Browse our collection of frequently asked questions for answers to your queries.

Why is there frost and ice inside my roof space? +

What can I do to stop mould and condensation? +

Are PIV systems noisy and expensive to run? +

Do PIV units make the house cold? +

How does a PIV unit work? +

Do PIV units stop mould? +

Is getting a professionally installed PIV unit worth the money? +

Can I totally eradicate condensation and mould from my home? +