Liner in Southern Ontario?
Most of us will second Doug's recommendation. The roofing liner is
the same stuff as 'pond' edpm. You can wash off the light powder that
is often on it. In the years Phyllis and I have been on rec.ponds and
rpm, no one has reported any problem with roofing edpm. We used it on
our berm ponds, behind the waterfalls and under the streams.
Jim
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