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Expandable foam question
Xref: kermit rec.ponds:140469
I agree. What we did when we built our stream and ponds was this. After laying the liner out we ended up with 3 seperate pieces. We sealed them together with the sealing tape. Then we placed the mirror stones and checked the flow-over. We used the regular expanding foam (low expansion type). We shot a line of foam at the backside of the mirror stone and placed the stone in it. After it cured we trimmed it down. It does turn brownish and green. If it's exposed to sunlight though it will break-down over time... Janet in snowy Niagara Falls! O -- "Bonnie" wrote in message ... joe wrote: Here's what you do. Place the liner. Spray the foam onto the liner and then place the rock over the foam. It won't be 100%, but pretty close. The foam works better this way than trying to lay a "bead" of it afterwards. FYI, This past weekend I reworked my stream a bit and tried the cheap stuff from the home depot rather than the black stuff hawked by the pond industry. Worked like a charm. Kind of ugly though. But others on this list seem assured it will turn a less offensive color soon (If not I can always go back to the black stuff later) Joe On 3/15/04 3:23 PM, "grubber" wrote: How waterproof is that stuff? I'm putting in a stream and there are many wide flat limestone rocks that I would like to incorporate, while using EPDM liner for most of the stream. In particular, there is a rock about five feet in diameter, about 4 inches thick that has a nice overhang. I would like to dig the dirt back about a foot, lay liner back under the rock and foam the seam where liner meets rock so I can have the stream flow over the rock and fall to the pool below. Will the foam be good enough to waterproof the seam so I can have standing water there, or only enough to deflect splashing water with the water level lower than the edge of the liner? Is there a better way to do this? I know I can do the Gatorgard spray-in stuff, but that's on the pricey side of things. And later on, if you develop a leak - check this place first. The best thing to seal two pieces of liner together is the expensive tape. -- Bonnie NJ |
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