104Y: Leak & hygroscopic salts
Leak below rear extension and hygroscopic salts on removed chimney breast. Look to neighbours side and above.
Hygroscopic salts
104J: Damp walls from rising damp proofing
Victorian garden flat with damaging damp proofing reportedly installed by Peter Cox. Hygroscopic salts – there is no evdidence of rising damp.
104A: Leak in lower ground floor flat
Leak testing should form part survey, if there is unexplained damp on inside walls that does not look like hygroscopic salts.
103S: hygroscopic salts two floors up
Hygroscopic salts on 2nd floor chimney breast, not obvious at first as not especially humid. Speak to buyer to know their concerns first.
103Z: Hygroscopic salts manure
Hygroscopic salts have previously been used as a justification for rising damp treatment. The property is not at risk of rising damp.
103G: Render crack and hygroscopic salts
Determining causes when two are mixed together. Penetrating damp from render cracks mixed with hygroscopic salts from the chimney breast.
103F: Neighbours leak and hygroscopic salts
Leak neighbour side; obsolete heat pipes buried in rear extension and poor ventilation/ heat. Hygroscopic salts on two first floor chimneys.
102Z: damp proofed lower-ground-floor
Buyer’s request for £5K price drop following Tapco and Kenwood quotes. We do not want buyers to be ripped off with invasive inappropriate work causing delays & stress…
102P: Hygroscopic salt – calcium chloride – first floor
~20% damp surveys are of properties with hygroscopic salts by chimneys. Beware misdiagnosis and costly mistakes by builders or surveyors….
Case Study C3 – complex damp – empty flat
Case Study – Unoccupied flat, with datalogger comparable from when occupied.