In article , David@chapelllhou
se.demon.co.uk writes

Have you ever seen any reports of structural damage Jane? the roots are
shallow and weak, how are they going to cause damage? I think this is a
fallacy, but if anyone has any evidence...

When my brother in law wanted to build an extension, he was told by the
planning people that, because there was a leylandii growing within x
feet (where I can't remember what x was) he would have to make his
extension foundations some ridiculous depth - I can't remember the
figure but it would have been impossible for a man to stand up in and
throw the diggings out (

And when we pulled out leylandii that were about 10 years old and had
reached about 30 feet, the roots went for yards and yards. I think it
has something to do with the fact that they withdraw so much moisture
from the soil.
--
Jane Ransom in Lancaster.
I won't respond to private emails that are on topic for urg
but if you need to email me for any other reason, put ransoms
at jandg dot demon dot co dot uk where you see