Hi Bill:

FWIW I have two ponds. The sides of both ponds are within 2 - 3' of some
major trees. Maple, white oak, ash. However our liner is not the thin,
expensive purchased kind. I use Firestone roofing membrane that is used.
IE it came off the roof when the plant was re-roofing. The stuff is so
thick that if I stand on a garden spade and jump up and down I can't
puncture it. In two years we have not had a root puncture the liner. I
expect it would just make a 90 degree turn as this stuff is so thick. The
best part is it was free. I power washed it well before installing and have
never had a fish or plant problem.

If you cal around the roofers in your area you may get lucky and get some
from them. It saves them from having to dispose of the stuff.

Hope this helps some,
--
Heather
SW Ontario (Zone 5)
Pond Pictures at: http://community.webshots.com/user/heathersmyth











"Newbie Bill" wrote in message
om...
This may be years in the coming, but if by chance liners go on sale around
my birthday - ya never know. The only place we really have, short of
totally full sun is under the canopy of several Live Oaks and Pin Oak.
1) Anyone know rules of thumb about how far away from the base you would
have to be to not disturb the 'tap roots?'.
2) What concerns are there about any trees, shrubs etc puncturing the
liner.
3) This exposure would pretty much just be diffused light. Aside from
leaves and slow/limited plant growth any other negatives I'm not thinking
about?
Thanxx
Bill Brister - Austin, Texas (8b)