The top ten defects in old houses are:

1. Rising damp.
2. Inadequate sub floor ventilation to timber floors and subsequent decay.
3. Woodworm to roof structure / floor joists.
4. Wet rot to single glazed timber windows.
5. Poorly maintained / leaking rainwater goods.
6. Slipped / missing slates and poor levels of maintenance to roof coverings.
7. Gun barrel piping used to heating system and subsequent corrosion.
8. Galvanised metal water storage tank used. Corrosion and contamination of water.
9. Obsolete electrical installations.
10. Ineffective / poor operation of septic tanks.