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  1. #1

    Sealing pond window

    So the days come. Glass due to be delivered tomorrow. Can anyone advise on what sealant to use? Ive created a fibreglass rebate, so the glads will bond to the concrete block, and be tooled off flush with the fibreglass rebate. Many thanks!



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  3. #2
    Member Rank = Tosai pfrosty's Avatar
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    Just done mine with a fish safe polyurethane
    Idealseal auto marine
    Use plenty to create a large sausage shaped seal on 3 sides

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  5. #3
    Quote Originally Posted by pfrosty View Post
    Just done mine with a fish safe polyurethane
    Idealseal auto marine
    Use plenty to create a large sausage shaped seal on 3 sides
    Cheers mate 👍🏼 I dont compromise on quality....but.....£26 a tube, i aint paying that price 😂must be better priced alternatives?

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  7. #4
    Member Rank = Tosai pfrosty's Avatar
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    Think you've read it incorrectly
    Its £26 pounds for 6 tubes

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  9. #5
    Your right hahahaha. Thats a bit more like it lol. Thanks mate.

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  11. #6
    Anyone used pureflex 40?

  12. #7
    Senior Member Rank = Gosai Scorchio's Avatar
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    I used puraflex 40 on my window without any problems.

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  14. #8
    Senior Member Rank = Gosai Scorchio's Avatar
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    Used beads around each of the faces with 3mm window packers between window and fibreglass, this was to ensure the silicone wasn't forced out of the join. I used 5mm packers around the edges. Held the glass in place overnight. Pulled out the packers and filled the voids with silicone.
    Last edited by Scorchio; 29-05-2020 at 09:26 AM.

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  16. #9
    Thanks mate. I got myself some puraflex and bonded the glass in today. All looking good. How long till you added water after?
    Attached Images Attached Images

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  18. #10
    Senior Member Rank = Gosai Scorchio's Avatar
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    Hi ,

    I took out the packers the next day and filled the voids with silicone.

    The following day I filled it

    The water pressure holds the window in.

    Two days after the window was first placed into the opening only because I took the packers out and put more silicone in.


    Sent from my iPhone using Tapatalk

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  20. #11
    Senior Member Rank = Mature Champion RoyLittle0's Avatar
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    Hope all goes well with the window, I used Idealseal MS290 to stick my window in with 4 mm packers to ensure I had a good bead to the fiberglass and packers at the bottom to level it and again give a good thick bead, much like scorchio, I took the packers out the next day in filled in the void with more sealant, then filled the next day, no issues at all with it apart from the weight

    Idealseal MS290 x 12 pack £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
    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
    Idealseal MS290

    My Pond Build

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  22. #12
    Senior Member Rank = Gosai Scorchio's Avatar
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    Yes Roy,
    That glass was very heavy and I was scared in case I dropped it or scratched it.

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