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) with most other forms of dampness, rising damp is often misdiagnosed in buildings. Many misdiagnose a wall stain as rising damp instance due to misinterpreting the visual evidence of the wall and the readings of moisture meters. In simple terms rising damp occurs when ground water travels upwards through porous building materials such as brick, sandstone, or mortar, much in the same way that oil travels upwards through the wick of a lamp. The effect can easily be seen by simply placing a piece of porous brick, stone, or mortar in a shallow tray of water and observing how the