Just overlapping will not work. You will need to use a seaming material.
Some of these are double face tape, single face tape, liquid cements, etc.
To get these to work, the surfaces being seamed need to be clean, dry, and
pressure needs to be applied to the seam to be sure that a seal is complete.
Without the seaming material the water will flow through the overlap as a
very large leak.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html
"Cuk" wrote in message
news:W5IDc.164$%c3.136@newsfe5-win...
I have a pond which I wish to make larger. the extension will be a
shallower
area. the original pond has four sides I wish to lower one of these to
join
with the extension, I think I will be able to do this and then I am hoping
to be able to fit a new liner in the extension area and over lap it. I did
not really want to place a new liner the size of the whole pond . does any
one know if this would be possible.