On May 19, 3:38*pm, K wrote:
echinosum writes

The largest subsidence risk results from the combination of
(1) deciduous trees
(2) clay soils
See for example
http://tinyurl.com/qhkzz5

Thank you - a heartwarming link (for someone in a clay soil which is not
London clay, in a pre-1900 house which is not detached)

* " * * *Detached properties have a greater susceptibility to subsidence
or heave damage than non-detached properties.
* * ** Properties built prior to 1900 are less susceptible to damage than
those built thereafter
* * ** London clay is, by far, the most commonly encountered "problem"
soil.
* * ** It typically takes about 50 years between construction and
perception of damage, while only about 6% of cases occurred in the first
10 years after construction.
* * ** The likelihood of a property being underpinned following damage
generally increases with the level of damage
* * ** Oak trees are, by far, the most damaging species of tree. "

Still feel I did the right thing in persuading the Church to cut back
their beech tree (3m from our house) so that its branches no longer
sweep our roof tiles ;-)
--
Kay

I seem to remember that you had a row of Lleyandi along the drive with
the Church. I can't remember if they took them down or not?

Judith