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#1
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Rigid pond liner
I want to squeeze a tiny pond into my tiny garden - maybe a metre by a metre and a half. A rigid liner of irregular shape looks good for this but does anyone know how to create a hole that matches the shape of the liner? -- Sue ] |
#2
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Rigid pond liner
MadCow wrote:
I want to squeeze a tiny pond into my tiny garden - maybe a metre by a metre and a half. A rigid liner of irregular shape looks good for this but does anyone know how to create a hole that matches the shape of the liner? Nope! I struggled with this thought, and eventually opted to use a liner. -- ßôyþëtë |
#3
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Rigid pond liner
"BoyPete" wrote in message ... MadCow wrote: I want to squeeze a tiny pond into my tiny garden - maybe a metre by a metre and a half. A rigid liner of irregular shape looks good for this but does anyone know how to create a hole that matches the shape of the liner? http://www.crocus.co.uk/alanshowto/whichliner/ Or for the vaguely curious, or anyone reading offline Courtesy of Crocus and Alan Titchmarsh quote Installing a rigid liner Stand the liner in the correct position and then mark the position of the edge of the liner on the ground with sand or spray paint. Make a second mark about 30cm (12in) further out to indicate the area to be excavated. Dig the whole area down to the depth of the marginal shelf plus 5cm (2in). Make the sides slightly sloping towards the center of the pond. Then mark the deep water areas and dig out the soil in the middle of the pond to the maximum depth of the liner plus 5cm (2in), again making the sides slightly sloping. At each stage of excavation, check that the top edge of the pond and marginal shelves are level in both directions using a spirit-level. Once excavation is complete, remove any stones protruding into the hole before lining the bottom of the deep-water area with a 5cm thick layer of damp sand. Stand the rigid liner on the sand and check the levels of the liner. When it is in the right position, wedge pieces of wood around the sides to hold it steady. Then carefully fill in around the sides of the pond, while slowly adding water to the liner from a hosepipe. Ram the infill down with a piece of wood to make sure there are no air-pockets, paying particular attention to the areas under the marginal shelves. Check the liner is still level from time to time and make any minor adjustments necessary. Once all the gaps around the liner are filled and the pond is full of water, leave it for 24 hours before adding the edging. /quote michael adams |
#4
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Rigid pond liner
BoyPete wrote:
MadCow wrote: I want to squeeze a tiny pond into my tiny garden - maybe a metre by a metre and a half. A rigid liner of irregular shape looks good for this but does anyone know how to create a hole that matches the shape of the liner? Nope! I struggled with this thought, and eventually opted to use a liner. I couldn't find an answer to that problem, so I dug a hole that looked about the right size, ltemporarily ined it with a cheap tarpaulin and then lined it with slightly damp sand pressed to the walls. By offering the liner to the hole. it left smooth marks where it touched and undisturbed parts where it didn't. A stick could be pushed into the sand to check how thick it was. I was aiming for a 1" lining of sand. When an adjustment was needed, I lifted out the tarpaulin, tipped the sand into a container, dug away some soil and repeated the process. Eventually I was satisfied with the fit, so I removed the tarpaulin and lined the hole directly with the sand and put some part way up the walls. With the liner in place, I used poured dry sand between the liner and earth in the hope that the gaps would fill properly. I tamped it down with a suitable piece of wood to minimise the possibility of gaps. It served us well for at least ten years before we moved, but I must admit that our current house has a pool which I made with a butyl rubber liner. |
#5
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Rigid pond liner
"MadCow" wrote in message ... I want to squeeze a tiny pond into my tiny garden - maybe a metre by a metre and a half. A rigid liner of irregular shape looks good for this but does anyone know how to create a hole that matches the shape of the liner? An alternative to digging a full sized hole is to install the rigid liner into the equivalent of a raised bed. If you excavate a hole for the deep water section, the spoil can be used to help support the marginal section. Something like log-roll screwed to timber stakes can be used as a temporary retaining wall when you're backfilling under the margins. |
#6
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Rigid pond liner
In article ,
"BAC" wrote: An alternative to digging a full sized hole is to install the rigid liner into the equivalent of a raised bed. If you excavate a hole for the deep water section, the spoil can be used to help support the marginal section. Something like log-roll screwed to timber stakes can be used as a temporary retaining wall when you're backfilling under the margins. I definitely like this idea. I've had a few ponds by now; the one time I tried with a rigid liner, I followed all the advice and instructions carefully, but despite all my best efforts, the liner "settled" at one edge a few days after I'd filled it, and I was left with an awful unsightly edge of the liner poking up for at least half the circumference of the pond. It was a very big liner, so I was greatly disinclined to empty it and start all over again (especially as I'd transferred all my ongoing pond mud, complete with creatures). Yes, I like the built-up idea -- doesn't have to be very built-up, does it. John |
#7
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Rigid pond liner
"John" wrote in message ... In article , "BAC" wrote: An alternative to digging a full sized hole is to install the rigid liner into the equivalent of a raised bed. If you excavate a hole for the deep water section, the spoil can be used to help support the marginal section. Something like log-roll screwed to timber stakes can be used as a temporary retaining wall when you're backfilling under the margins. I definitely like this idea. I've had a few ponds by now; the one time I tried with a rigid liner, I followed all the advice and instructions carefully, but despite all my best efforts, the liner "settled" at one edge a few days after I'd filled it, and I was left with an awful unsightly edge of the liner poking up for at least half the circumference of the pond. It was a very big liner, so I was greatly disinclined to empty it and start all over again (especially as I'd transferred all my ongoing pond mud, complete with creatures). Yes, I like the built-up idea -- doesn't have to be very built-up, does it. No, it doesn't, and the dimensions of the liner quoted were not very great. I've seen two ponds installed by the method I described, and they have worked fine and looked OK. If you don't try to follow the shape of the liner too closely with the 'retaining wall', you can create room for pondside planting, filter, or whatever, as required. |
#8
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Rigid pond liner
In message , BAC
writes An alternative to digging a full sized hole is to install the rigid liner into the equivalent of a raised bed. If you excavate a hole for the deep I definitely like this idea. I've had a few ponds by now; the one time I tried with a rigid liner, I followed all the advice and instructions carefully, but despite all my best efforts, the liner "settled" at one edge a few days after I'd filled it, and I was left with an awful like the built-up idea -- doesn't have to be very built-up, does it. I've seen two ponds installed by the method I described, and they have worked fine and looked OK. If you don't try to follow the shape of the liner too closely with the 'retaining wall', you can create room for pondside planting, filter, or whatever, as required. Thanks for that - I like it too, as the bank will use up some of the spoil from the hole. I've asked about this all over the place, and a koi-carp enthusiast told me his method: Dig the hole 2-3 inches larger than the liner, put a layer of dry sand in the bottom of the hole and wriggle the liner into it. You make it slightly off-level so that it overflows where you want it to. Then you part fill the liner with water to hold it down. Then you pour water down the outside of the liner to wet the sand under it so it packs down, making sure the water level inside is always higher or it'll float and you'll have to start again. When that's all soaked in you pour some more dry sand down the sides, wet that and repeat. It sounds feasible but you'd have extra soil left over. -- Sue ] |
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