Rising Damp this fact was planned to be a plot development in the TV series, but the death of Richard Beckinsale meant this was not possible. A feature film version was released in 1980, reusing several storylines from the television series. As Richard Beckinsale had died the year before, Christopher Strauli was cast as a new character, art student John. The character of Alan is briefly referenced, as having left. The film's theme song features lyrics by Eric Chappell and was released as a 7" single. The B-side features comedy dialogue between Rigsby and Miss Jones. Philip is revealed not to be
Damp (structural) salt accumulations still persist. This suggests that rising damp is not always the cause for the water penetration. The Building Research Establishment (BRE) in its review concludes that rising damp is a real problem. According to Jurin's law the maximum height of rise is inversely proportional to the capillary radius. Taking a typical pore radius for building materials of 1 µm, Jurin's Law would give a maximum rise of about 15 m, however, due to the effects of evaporation, in practice the rise would be considerably lower. A physical model of rising damp was developed by Christopher Hall and William