103D: Kenwood damp proofed still damp
RICS qualified owner helped track down 3 complex sources of overlapping damp issues. Dalaloggers, hygrometer probe, kind neighbour, open floor
penetrating damp
103C: hygroscopic salts penetrating damp through render
Simple rule: Discolouration = rain. A damp patch near chimney = hygroscopic salts. Colourless damp by metal, door or window = condensation.
102U: RICS missed blocked gulley, dry-lined
The RICS surveyor missed a a blocked gulley causing high sub-floor humidity, putting sub-floor timber at risk of wet and Dry rot..
102I: top floor flat penetrating damp
Buyer concern: rot. Penetrating damp from gutter, blocked and partially repaired. The repair was too recent to know if it was effective.
102H: dry-lined neighbour drain suspected leak
Despite dry-lining, damp – like rising damp. Neighbours rainwater drain suspected of causing leak to sub-floor. High humidity, risk of rot.
102F: damp-proofing, despite undrained down-pipe and hygroscopic salts
Victorian terraced house on a hill. House on a hill. The owner had it damp proofed when they bought with damp proofers chemicals and dry lining, now they have a problem selling.
102E: treated damp, resulted in rot, as neighbour’s gutter blocked
Misdiagnosed rising damp. Root cause was neighbours blocked gutter. Rot identified in loft.
Walls of shame
Examples of misdiagnosed rising damp – rising damp is exceptionally rare. Yet most damp properties have previously misdiagnosed and mistreated for rising damp. In each case the source of the water was something simple to fix, but expensive if left untreated. The typical loss caused by misdiagnosed rising damp is £5,000 – £10,000. Please upload …
Decking
Tip for treating dampness caused by decking. It is often misdiagnosed as rising damp, as are so many other sources of dampness…
Penetrating damp
Rainwater falling onto a building or ground next to building can penetrating the walls causing internal dampness. Penetrating damp represents about 10 – 15% of dampness found on damp surveys. Top tips for identifying penetrating damp Penetrating damp is typically accompanied by a tea bag stain like discolouration (as do some mains water leaks). Typically …