Pond repair

[Bill Spohn]

I have an old cement pond that has started leaking after 60 years. I do not
want to replace it with a membrane, both because I dislike the appearance and
because I do not want to disturb either the well established margins or the
large planted island in the middle of it (it is a large pond maybe 40' long).

I have tried patching, but this either didn't take or new cracks appeared.

I am thinking along the lines of a layer of reinforcing mesh and a skim coat of
cement to seal it up again, and while I am at it, I'd like to drop one section
down a couple of feet to allow a place for the fish to hide and the lilies to
grow - the pond is fairly shallow.

This chore seesm to fall between the areas of competence of the liner pondies
and a swimming pool company - no one seems to be geared up for the repair of
existing ponds, though many will offer to install a new one with membrane,
which is not what I want.

I am prepared to have one more try at patching, if anyone has any suggestions
for a flexible patching compound that will bond to old concrete. If that
doesn't work, I guess I may have to talk to the swimming pool people :-(

Any brilliant iedeas out there?

[tim chandler]

Quikrete Vinyl Concrete Patcher. Works great. I used it as the surface
finish for my concrete pond, and also for patching leaks, as well as general
concrete repair. It is a fiber-reinforced mix which gives it greater
strength to resist cracking. You can Google for more info on it, it will
bond OK to old concrete but it's recommended that the old surface be roughed
up for best adhesion.

Happy (concrete) Ponding,
Tim

"Bill Spohn" > wrote in message
...
> I have an old cement pond that has started leaking after 60 years. I do
not
> want to replace it with a membrane, both because I dislike the appearance
and
> because I do not want to disturb either the well established margins or
the
> large planted island in the middle of it (it is a large pond maybe 40'
long).
>
> I have tried patching, but this either didn't take or new cracks appeared.
>
> I am thinking along the lines of a layer of reinforcing mesh and a skim
coat of
> cement to seal it up again, and while I am at it, I'd like to drop one
section
> down a couple of feet to allow a place for the fish to hide and the lilies
to
> grow - the pond is fairly shallow.
>
> This chore seesm to fall between the areas of competence of the liner
pondies
> and a swimming pool company - no one seems to be geared up for the repair
of
> existing ponds, though many will offer to install a new one with membrane,
> which is not what I want.
>
> I am prepared to have one more try at patching, if anyone has any
suggestions
> for a flexible patching compound that will bond to old concrete. If that
> doesn't work, I guess I may have to talk to the swimming pool people :-(
>
> Any brilliant iedeas out there?

[Hank]

Bill, 60 year old concrete (especially below water) can be very
crumbly <I think that's a word>. I would try to seal larger cracks
with expandable foam before coating with concrete. Tim is right,
Quickcrete makes an excellent patch product. You must remove all
traces of algae or the patch will not bond. (bleach .... toxic to fish
or mild muriatic acid ..... will cause PH to plunge) Both work well
but you must use carefully.
Fiberglass or epoxy pool coatings are another option, but
very costly. Hank

"Bill Spohn" > wrote in message
...
> I have an old cement pond that has started leaking after 60 years. I
do not
> want to replace it with a membrane, both because I dislike the
appearance and
> because I do not want to disturb either the well established margins
or the
> large planted island in the middle of it (it is a large pond maybe
40' long).
>
> I have tried patching, but this either didn't take or new cracks
appeared.
>
> I am thinking along the lines of a layer of reinforcing mesh and a
skim coat of
> cement to seal it up again, and while I am at it, I'd like to drop
one section
> down a couple of feet to allow a place for the fish to hide and the
lilies to
> grow - the pond is fairly shallow.
>
> This chore seesm to fall between the areas of competence of the
liner pondies
> and a swimming pool company - no one seems to be geared up for the
repair of
> existing ponds, though many will offer to install a new one with
membrane,
> which is not what I want.
>
> I am prepared to have one more try at patching, if anyone has any
suggestions
> for a flexible patching compound that will bond to old concrete. If
that
> doesn't work, I guess I may have to talk to the swimming pool people
:-(
>
> Any brilliant iedeas out there?

[Bill Spohn]

Thanks for the advice, guys.

[RichToyBox]

There is a neoprene coating that can be gotten at AquaticEco.com made by
Herco that comes in white, black or gray, and would act as a liner on the
concrete. Most concrete repair materials using portland cement are to rigid
to permit any movement of the concrete below, which is probably has caused
the concrete to crack initially.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html


"Bill Spohn" > wrote in message
...
> I have an old cement pond that has started leaking after 60 years. I do
not
> want to replace it with a membrane, both because I dislike the appearance
and
> because I do not want to disturb either the well established margins or
the
> large planted island in the middle of it (it is a large pond maybe 40'
long).
>
> I have tried patching, but this either didn't take or new cracks appeared.
>
> I am thinking along the lines of a layer of reinforcing mesh and a skim
coat of
> cement to seal it up again, and while I am at it, I'd like to drop one
section
> down a couple of feet to allow a place for the fish to hide and the lilies
to
> grow - the pond is fairly shallow.
>
> This chore seesm to fall between the areas of competence of the liner
pondies
> and a swimming pool company - no one seems to be geared up for the repair
of
> existing ponds, though many will offer to install a new one with membrane,
> which is not what I want.
>
> I am prepared to have one more try at patching, if anyone has any
suggestions
> for a flexible patching compound that will bond to old concrete. If that
> doesn't work, I guess I may have to talk to the swimming pool people :-(
>
> Any brilliant iedeas out there?

[GrannyGrump]

>Any brilliant iedeas out there?

Take a look at Sani-Tred
http://www.sanitred.com/WaterFountain.htm