Building defects database - Winter risks

Record details

During severe cold weather, water storage tanks and associated pipework in loft voids become vulnerable to freezing and eventual bursting, resulting in widespread internal flooding. Snow on the roof for sustained periods indicates either a well-insulated loft void or a property that is unoccupied/under-occupied. Roofs slopes without under-lining can be prone to snow drifting into the loft void through gaps in the covering, causing internal dampness (or worse) on melting.