I was wondering how the bonding with other liners works with it, as well. I was thinking of using xavan for my new pond, then having a stream connecting that to my old pond, which is EPDM. I'd like to seam the liners together - I have a 5 x 10 EPDM liner sitting around I was going to repurpose for the stream, so I'd need to join the xavan and epdm at some point.