Ventilation alone won't dry a cold roof space. Jon Davies explains why sealing the ceiling at every scotia gap and around every unsealed downlight does more to reduce condensation than any vent.
Above-sheathing ventilation (ASV) uses solar energy to induce airflow between the cladding and the membrane by heating the roof cladding and warming the air in the cavity below.
In Part 2 of this series, our brave new roof used Above Sheathing Ventilation (ASV) to battle the dark forces of winter. But summer brings another set of challenges.
