As I have said several times- rising damp does not exist.
What appears to be rising damp is caused by other things--especially since the 'replacement of wall ties/ cavity insulation fetish' has given the house surveyors another golden oportunity to make more money for nothing'.
Dont see 'rising damp' in newer houses-- know why ?? because they are new .
Only older houses are targeted by the 'predators'.
Blocked cavities used to be the main cause. Still are in many many cases-- due to soot and old mortar falling down the cavity after 100 years or more .
These days- we have numpty young boy soldiers wandering around- trying to sell cavity wall insulation.
They sell it (because of grants these days).
Next step is numpty installers- who come along- and blast many holes in the wall- HAMMER ON DRILL and blow off back of bricks-because they do not know how to drill properly and prevent back of brick spalling off . Gravity takes its course and cavities get full.
Also- backs of bricks rest on old ties .
Soot/old mortar falls down from holes in brickwork chimney construction-
lodges on fallen material-- and outside brickwork gets wet (only when it rains) and water tracks between outside skin and inside skin-- hence - high/mid level damp.
A few weeks ago- I took maybe 9 sacks of crap and soot out of a gable wall cavity.
2 years ago- I emptied that cavity- around 9 or 10 bags then.
Soot in bottom of cavity- above dpc/floor level was wet through.
Could squeeze the water out with my hands.
Penetrating damp was caused to inside.
All to do with partical size of muck in the hole . Simples .
What appears to be rising damp is caused by other things--especially since the 'replacement of wall ties/ cavity insulation fetish' has given the house surveyors another golden oportunity to make more money for nothing'.
Dont see 'rising damp' in newer houses-- know why ?? because they are new .
Only older houses are targeted by the 'predators'.
Blocked cavities used to be the main cause. Still are in many many cases-- due to soot and old mortar falling down the cavity after 100 years or more .
These days- we have numpty young boy soldiers wandering around- trying to sell cavity wall insulation.
They sell it (because of grants these days).
Next step is numpty installers- who come along- and blast many holes in the wall- HAMMER ON DRILL and blow off back of bricks-because they do not know how to drill properly and prevent back of brick spalling off . Gravity takes its course and cavities get full.
Also- backs of bricks rest on old ties .
Soot/old mortar falls down from holes in brickwork chimney construction-
lodges on fallen material-- and outside brickwork gets wet (only when it rains) and water tracks between outside skin and inside skin-- hence - high/mid level damp.
A few weeks ago- I took maybe 9 sacks of crap and soot out of a gable wall cavity.
2 years ago- I emptied that cavity- around 9 or 10 bags then.
Soot in bottom of cavity- above dpc/floor level was wet through.
Could squeeze the water out with my hands.
Penetrating damp was caused to inside.
All to do with partical size of muck in the hole . Simples .