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  1. #1

    Fish safe sealant for laying coping stone on liner

    Hi, I am in the process of laying the slate coping slabs onto the liner on my block work pond, been adviced to cut back the liner and mortar the block to the coping on the outside edge and use pond safe sealant for the liner edge towards the pond. Can someone recommend a sealant pls, something that is cheaper than the Gold label pond sealer which I have used for the bottom drain, but it is quite expensive and I will required quite a bit too for the coping slabs. Thanks.



  2. #2
    Senior Member Rank = Supreme Champion davethefish1's Avatar
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    Ideal seal auto marine PU is stronger
    But if you get it on your hands it stains permanently

    https://www.idealsealants.com/ideals...00ml-x-12-p300

    Idealseal MS 290 hybrid polymer (same as goldfable)
    £4 A tube

    https://www.idealsealants.com/ideals...ive-290ml-p144

  3. Thanks Koikoiho, freddyboy Thanked / Liked this Post
  4. #3
    Thank you. Just need to work out how many tubes I need for 16 x 600mm pieces of coping.

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  6. #4
    Senior Member Rank = Supreme Champion freddyboy's Avatar
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    I use Idealseal MS 290 for everything on my pond and qt

    Sent from my SM-G960F using Tapatalk

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  8. #5
    Senior Member Rank = Grand Champion RoyLittle0's Avatar
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    Like Fred I used Idealseal MS 290 for everything from the bottom drain, sticking the glass window in to the coping stones, I wouldn't use anything else, a box of 12 straight from the manufacturers £49.20

    https://www.idealsealants.com/ideals...90ml-x-12-p301
    4600 Gallon Concrete Block and Fiberglass
    2100 mm x 710 mm Infinity Window 32mm thick glass
    2 x Aerated Bottom Drains and Skimmer
    Filtreau HiFlow 30 Drum Filter
    Bio Chamber - 140 litres K1
    Bakki Shower - 30 KG Sakura Far Infrared Media
    2 x 18,000 lh pumps
    Heated from house boiler through a heat exchanger
    Idealseal MS290

    My Pond Build

  9. Thanks Koikoiho, freddyboy Thanked / Liked this Post
  10. #6
    Thanks again. One last question, can I use normal mortar for the gaps between the coping slabs or use the sealant for that too?

  11. #7
    Senior Member Rank = Jussai Spongebob's Avatar
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    Not sure you're going to get a permanent get a seal between liner , stone and render.Id be more tempted to just coat the mortar with G4 sealant.

 

 

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