I seem to be having a problem posting so if this is posted with my
other post sorry but I don think the first one went through.
You know chris this is probably the number 1 reason we are called out
for diveway bids and the fact of the matter is that the fix is very
simply and only needs to be done once a year. Go purchase what is
called a straight edge spade, or long spade picture if you will a flat
shovel that is about 7-8" wide by maybe 13-15" long with a short
handle. Simply run this along the edge of the slab atleast halfway down
more if you can and this cuts off any feeler roots that are heading
twards trouble..once a year is all you need to do it .....If you
already have larger roots you really have no choice but to dig next to
the slab and but them off after doing this do what I have explained
above. We have replaced dozens and dozens of driveways that have been
raised up by roots and we allways cut the roots from 6-12" back from
the slab and instruct the customer as I have above...havent had a call
back yet if you have any doubts talk to a arborist about root growth
patterns and he will tell you this is an effective controll..


cover wrote:
I've got tree roots from a maple tree growing dangerously close to a
concrete slab and was hoping someone might have an effective way of
dealing with an issue like this short of swinging the axe. Chainsaws
and grinders in my experience haven't been too effective. The link
below shows the problem and thanks very much for any ideas.

http://home.nctv.com/ajns/roots.jpg

Chris