I would welcome any comments and advice on the technique known as
"daylighting" in which soil near a tree is excavated using, as it has
been explained to me, pressurized water and suction.
My basement needs waterproofing but an arborist has recommended that
we not cut the roots of a large old nearby oak tree, which rules out
hand excavating. My contractor is now proposing this "daylighting"
techique, to be done by a specialist.
I'd appreciate any hints as to what questions I should be asking.
I have never heard of it, but it does make some sense.
Now for the down side. If you have a large tree that close to your
foundation that it would need that kind of treatment, I suspect that it is
too close to your foundation. large trees that close to your home can cause
a number of problems, including maybe the one you are trying to solve.
I know, I have one too close to my home also and some day I am going to
regret that I have not removed it.
My tree is a pine about five foot away. I have no idea about Chip's
tree, but his oak appears to be close enough that there are enough roots
close enough to the foundation to cause some worry about the health of the
tree while excavating for waterproofing the basement wall. I would say that
is close enough to be concerned about damage the tree may do to the home.
Ah, now that's an interesting factoid...my foundation is also less
than 6ft from the tree. Yes, that's way too close, but the house has
been here for over 90 years and the tree (per an arborist's guess)
maybe 60 years longer. And yes, some of the foundation problem (bowing
inward) is caused by the tree; I suspect that the whole volume of
space outside the foundation is just a tangle of big roots.
But that's the situation I'm in, so the question is whether this
water-squirting trick is likely to work, or cause more problems than
it will solve. Maybe it's too new for folks to have much experience
email@example.com (m Ransley) wrote in message
chipc firstname.lastname@example.org (Chip C) wrote:
Can't help with the daylighting-- but if it were my house & I had a
60yr old oak 6 feet from my house I'd be thinking about removing it
Ask a local arborist for some pictures of trees he's removed from
houses after high winds, lightning, or ice storms. It isn't pretty.
Oaks are pretty susceptible to all 3 of those threats.
At best the fix for the roots will be temporary. Remove the tree &
plant a new one further from the house. You get to pick the tree &
place it where you'll get the most benefit.
hmmm...your point is well taken, but the tree was 60 yrs old when the
house was built, 90 years ago! Removing a mature oak around here gets
your name in the papers. Oh, one more thing: it's not my tree, it's on
the neighbour's property! Bottom line: the tree ain't moving.
My info on cutting 15 ft to the tree was based on my house in that I
would have been cutting all its old roots. Cutting 2 feet into roots is
different . But I imagine they are pushing your foundation and will grow
back, whether it will damage it I dont know.
Squirting water to remove soil is as old as the hills. Back in the gold
rush days they literally hosed down mountains to get the gold out (I saw
the piles of washed out rubble in California).
But you are likely to find roots as big as a tree pushing at your
foundation. And if the tree is anchored to your home, is it going to
topple over if you wash out one side of it or cut some roots away? It may
also need some branch pruning, to keep it balanced or compensate for root
reduction. Good luck. Whoever originally let an oak tree grow there was
David Efflandt - All spam ignored http://www.de-srv.com /
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