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  1. #1

    Topcoat/Gelcoat pealing off

    Hi guys,

    I've been finding bits of Gelcoat (old hard) in my filters over the past few weeks, so quite large chunks. No fibreglass, just Gelcoat.

    I assumed it was just stuff that I'd painted into the bottom drains coming off, but today I've been down to reattach my BD diffusers as they both floated off, and to my horror have seen 4 large(2'*2') patches of Gelcoat peeling off the wall.

    There is a very clean new layer of perfect Gelcoat underneath by the look of it, which means it's the 2nd coat I put on over the initial coat that got sanded down due to lots of sharps.

    Does anyone know why this is happening? It only seems to be at the bottom of one wall, and has peeled like a flower opening, and can easily be peeled off by hand.

    Cheers,

    Jay



  2. #2
    Quote Originally Posted by Jason Megson View Post
    Hi guys,

    I've been finding bits of Gelcoat (old hard) in my filters over the past few weeks, so quite large chunks. No fibreglass, just Gelcoat.

    I assumed it was just stuff that I'd painted into the bottom drains coming off, but today I've been down to reattach my BD diffusers as they both floated off, and to my horror have seen 4 large(2'*2') patches of Gelcoat peeling off the wall.

    There is a very clean new layer of perfect Gelcoat underneath by the look of it, which means it's the 2nd coat I put on over the initial coat that got sanded down due to lots of sharps.

    Does anyone know why this is happening? It only seems to be at the bottom of one wall, and has peeled like a flower opening, and can easily be peeled off by hand.

    Cheers,

    Jay
    Did u topcoat complete pond

    Sent from my VOG-L29 using Tapatalk

  3. Thanks freddyboy Thanked / Liked this Post
  4. #3
    Quote Originally Posted by Jason Megson View Post
    Hi guys,

    I've been finding bits of Gelcoat (old hard) in my filters over the past few weeks, so quite large chunks. No fibreglass, just Gelcoat.

    I assumed it was just stuff that I'd painted into the bottom drains coming off, but today I've been down to reattach my BD diffusers as they both floated off, and to my horror have seen 4 large(2'*2') patches of Gelcoat peeling off the wall.

    There is a very clean new layer of perfect Gelcoat underneath by the look of it, which means it's the 2nd coat I put on over the initial coat that got sanded down due to lots of sharps.

    Does anyone know why this is happening? It only seems to be at the bottom of one wall, and has peeled like a flower opening, and can easily be peeled off by hand.

    Cheers,

    Jay
    If you did the full pond the first topcoat needs to be sanded all the pond topcoat contains wax so will eventually de laminate ie come off
    Regards ken unique fiberglass linning

    Sent from my VOG-L29 using Tapatalk

  5. Thanks freddyboy, Alburglar, hippo, anne Thanked / Liked this Post
  6. #4
    Hi Guys,

    I fibreglassed, then sanded, then put on a green Gelcoat, but this had lots of sharps in it, so I sanded them back, but there were so many that the finish looked awful, so I went over it again.

    I can't remember how much I redid, certainly the whole of the back wall which is peeling.

    So what is happening? I'm assuming I've done something wrong.

    Cheers,

    Jason

  7. Thanks freddyboy Thanked / Liked this Post
  8. #5
    Quote Originally Posted by Jason Megson View Post
    Hi Guys,

    I fibreglassed, then sanded, then put on a green Gelcoat, but this had lots of sharps in it, so I sanded them back, but there were so many that the finish looked awful, so I went over it again.

    I can't remember how much I redid, certainly the whole of the back wall which is peeling.

    So what is happening? I'm assuming I've done something wrong.

    Cheers,

    Jason
    Hi Jason if wall was not completely sanded then cleaned with asetone it will come off sometimes re topcoat are a pain think you would have found once filled you wouldn't have seen wear you had sandef
    Regards ken

    Sent from my VOG-L29 using Tapatalk

  9. #6
    Hi Ken,

    Thanks for the reply. I had so many problems with the topcoat going off crazy quick that the whole wall had sharps, so it pretty much all got sanded. Stupidly I thought it looked unsightly with all the sanding marks, which is why I topcoated it again. I did wipe it all down with acetone after I sanded it, which dulled the marks left by sanding, but it still looked bad enough to redo it.

    So you think it will all come off then? I don't even understand how it blows, surely the pressure of the water would keep it pressed against the wall, and I would have thought it would come away, but not split open and peel back. It's crazy.

    I hated doing it, but stupidly thought it looked easy. Lol

    Jay.

  10. #7
    Hi Jay not one hundred percent serten not really come across this only thing simler pond refurbishment a few years back when pond was empty he must have had a similar issue as there was areas of topcoat missing so all I can advise is you monitor the situation
    Regards ken unique fiberglass linning

    Sent from my VOG-L29 using Tapatalk

  11. #8
    Hi Ken,

    Thanks for the reply. As it's just the 2nd coat, and not the one on the fibreglass, I'm not going to lose any sleep over it, it's annoying rather than anything.

    Cheers,

    Jay

 

 

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