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Pond liner/rendering advice please?

Any advice on fitting a replacement pond-liner, or rendering the inside is greatly appreciated.

The pond is a fairly old brick-built structure with some exterior signs of movement(cracks). It's existing liner that has failed and is also quite visually unappealing.

Personally, I'd prefer to render the inside, but I take it that this isn't the best idea as the structure isn't my own and 100% structurally sound.

Any feedback will most likely be of assistance, cheers.

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Replies

  • Have you considered GRP? Most ponds and water features I build I have GRP moulded in- situ. A google search should find someone in your area, though I don't know what you would need to type in!
  • If you need any advise Sam give me a call. All we do is build ponds.
    Leigh
    www.outsidewater.co.uk
    07727 988590

  • Hi Sam

    If the pond has a concrete base and brick sides, you could line it with 'smart ply', then flowcoat the whole lot. If you're unsure drop us an email through the site below and I'll explain.

    Cheers

    Brian

    www.thewaterfeaturecompany.co.uk
  • It's good to see some specialists on here. We have had a water feature enquiry made recently so I'll be sure to pick your brains should I find myself stumped! Cheers in advance!

  • Hi Neil

    No worries, plus if you require any equipment for the job, take a look at our sister company www.twfctradesupplies.com, the prices are really keen.

    Best regards

    Brian
  • PRO Supplier

    Hi Sam. I would suggest using a flexible pond liner to re-cover this. However, I’ve written a few options below to help.

    Single Sheet liner.
    If the pond is a more complex shape, a single sheet of pond liner is probably the best option. I’d usually suggest GreenSeal EPDM as this is the best balance between cost and quality. It’s also worth laying a puncture resistant membrane down 1st, unless the surface is completely free of debris and unlikely to degrade further. If the existing render continues to shift, the liner will stretch to compensate.
    Link to: Flexible Pond Liner
    Link to: Protective Underlay

    Box Welded Liner.
    If the pond is a formal shape and can be measured accurately, then we can produce a bespoke box liner which will simply drop directly into the hole with no pleating or folding required. This will come complete with a 6” top flange which can be coped directly over if needed. Again, I’d suggest a protective underlay to protect the investment. Box liners do not have the same stretch characteristics as a single sheet of liner would, so measurements need to be accurate. These tend to be more expensive than a single sheet, but will save on labour time and produces a very neat finish.

    Pond Paints.
    It’s possible to ‘Vee-out’ any cracks and fill these with an underwater pond sealant (applied as you would a silicon sealant). Once the surface is sound, the pond can then be painted over (usually 2-3 coats). Although this is a relatively simple task and the paint will allow for a little additional movement, this is best used on new concrete which is structurally sound rather than repair of an unknown build. We can mix the paint to any RAL colour which is useful to know if a client needs a specific finish (although I’m a big fan of black, as it disguises any technology in the pond and makes debris harder to spot).
    Link to: Pond Paints

    Fibreglass.
    This will provide a very sound, long lasting finish but needs to be applied in decent weather conditions. It tends to be the most expensive option due to the labour costs involved.

    I hope this helps. You are always welcome to email or call on 02392 373735 and I can guide further if you need it.

    All the best – Andy @ Water Garden Ltd.

  • Many thanks for all of your replies, they have been very helpful.

    I eventually went for the GreenSeal EPDM and a protective underlay (Cheers Andy).

    I think it's going to work really well, cheers all.

    Sam.

  • PRO Supplier

    No problem Sam. If you need any other bits (filters etc) just let me know and i'll sort you out a deal. I will ask Elliott to add you to our Landscaper Finder Tool today too. This might generate a few enquiries which i'll pass your way. All the best - Andy.

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