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Thread: Tips and tricks for laying down glass over ply.

  1. #36
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    Well after all that I completely forgot I was going to lay the glass on dry and use a roller.

    Yesterday I did a saturation coat of epoxy, no glass, over the whole deck. That went well, good finish, no bubbles. I put it on with a roller designed for epoxy floor coating as I find that foam rollers tend to disintegrate. The roller left a lot of small bubbles which I had to brush out as I went. The only brush I had on board was a 1 inch chip brush. A bit small for the deck of a 50 footer but I got it done.

    Today with Bruce helping we put some cloth at the back of the aft deck another on the starboard side deck. I used a grouting squeegee to spread epoxy, then laid the glass on that. Squeegeed it around a bit, poured on more epoxy, more squeegee, laid on peel ply, more squeegee then stepped away. Had a tough fight with a few bubbles and wrinkles and a bit if trouble with wind blowing overhanging cloth up onto the deck, but pretty happy with the result. Full sunshine, which was unavoidable, no bubbles, looks smooth, one dryish spot but that's on a bit of deck which will be cut out to fit the aft hatch.

    Good enough for my first time.

    Tomorrow I plan to try putting the glass on dry, and squeegeeing epoxy over it.


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  2. #37
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    Laying the glass onto dry deck and then pouring and squeegeeing epoxy is much better

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  3. #38
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    Bubbles. Not sure why. Only on one panel. I think they are between the glass and the peel ply. Maybe just too hot, this was the last panel we did, hot day, around midday, sun directly overhead. The morning work is OK. We stopped there as we ran out of peel ply, and quite a breeze comes up in the afternoon which makes things difficult. The glass itself doesn't seem to be standing up, so probably just some epoxy to sand off when I'm ready to remove the peel ply. We might have to do the rest of the deck in the early morning. Stop by about 10.00 am

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  4. #39
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    Default Re: Tips and tricks for laying down glass over ply.

    Probably a bit of gassing off, once you get the PP of have a good look at the glass. If there are white bubbly patches look a bit closer, if they are definitely not attached to the ply then cut them out and bog over. No need to glass again. Looks great! The big advantage of PP is not sanding for the filler coat so i suspect that those bubbles may be a bit shiny and will need a sand. No big deal, for the filler make a thin slurry with that microlite powder the tan coloured stuff cant remember the west number, it will make it a lot easier to fill the weave and sand down.
    whatever rocks your boat

  5. #40
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    Cheers Paul. Should be pretty easy to tidy up. So slightly disappointing but nothing major. We have cooler weather coming next week so hoping for better results as we move forward. Literally. Meanwhile I've started work on the foredeck, which I've been leaving for later. Got the genoa, anchor and winch off yesterday and I'll get on with removing deck today.

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  6. #41
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    More progress with help from Bruce today. I did peel back a bit of the bubbled peel ply, all pretty good underneath. The glass is lying down flat and there's just a bit of raised epoxy around the edge of the bubbles. We got several acres of glass on today with no significant problems. There will be a bit if sanding to do at the overlaps, but nothing of concern.

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  7. #42
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    Please go easy with sanding. It's just too easy to sand into the cloth when trying to fair overlaps. Looking good!
    Denise, Bristol PA, Oday30, Anchor Yacht Club, On tidal Delaware River. my current project; http://forum.woodenboat.com/showthre...0-Ducker-Resto

  8. #43
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    Quote Originally Posted by DeniseO30 View Post
    Please go easy with sanding. It's just too easy to sand into the cloth when trying to fair overlaps. Looking good!
    I will take your advice very much to heart. The less sanding the better. A fairly thick textured deck finish, Kiwigrip is going over it so I'm not looking for super flat.

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  9. #44
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    Report back. The deck is done and glassed. I used a roller to apply epoxy to the ply.

    First attempt I laid glass over wet epoxy. Very difficult. It didn't want to lie flat. Wrinkles didn't want to float out. I used a rubber squeegee designed for grouting tiles. It was a good tool for wetting out the cloth. Peel ply was a challenge to get flat and bubble free on top of the glass, but eventually did smooth out.

    Second attempt I put the glass over dry epoxy. Much easier. It laid out flat, poured epoxy on and squeegeed it. Good finish, easy job. Peel ply was still a bit difficult and the next day some bubbles, a lot of bubbles, had appeared in the peel ply we put on in the hottest part of the day. The glass underneath us OK, but there will be some excess epoxy to sand off.

    The last section completed today I didn't bother with peel ply and it went in easy and produced a nice finish.A bit of weave, which is fine on a deck which will be finished with non skid.

    All up I used about 50 metres of glass and I suppose 10 litres of epoxy. Hard to tell on the epoxy because I was building the deck as I went, glueing 2 layers of 9mm ply together. Used about 25 litres all up.

    Thanks for the advice and experience along the way.

    Next steps, fillets around cabins, undercoat everything, seal the shroud plate penetrations and then replace all the deck fittings. Then masking and non skid.

    Then go sailing.

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  10. #45
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    Happy

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  11. #46
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    Default Re: Tips and tricks for laying down glass over ply.

    WOW!

  12. #47
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    Default Re: Tips and tricks for laying down glass over ply.

    yeah, she's gleaming, well done
    Simpler is better, except when complicated looks really cool.

  13. #48
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    Default Re: Tips and tricks for laying down glass over ply.

    Nice.
    Why the boom around your neighbour?
    R
    Sleep with one eye open.

  14. #49
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    Default Re: Tips and tricks for laying down glass over ply.

    Nice work Phil - how did you go with the chain plate penetrations?
    It's all fun and games until Darth Vader comes.

  15. #50
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    Quote Originally Posted by Ron Williamson View Post
    Nice.
    Why the boom around your neighbour?
    R
    It's some anti marine growth thing. There's netting under the boat. No idea how it works.

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  16. #51
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    Quote Originally Posted by gypsie View Post
    Nice work Phil - how did you go with the chain plate penetrations?
    That's next.

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  17. #52
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    Default Re: Tips and tricks for laying down glass over ply.

    Looks good!

    Kevin
    There are two kinds of boaters: those who have run aground, and those who lie about it.

  18. #53
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    Quote Originally Posted by Breakaway View Post
    Looks good!

    Kevin
    Thanks

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  19. #54
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    So I learned today that after putting down the glass and epoxy I probably should have gone over it with another coat of epoxy, maybe with some filler in it? I did a coat of high build primer a while ago, and ended up with lots and lots of pinholes not covered or filled by the primer. Advice from my paint supplier is that If I mix up another batch of primer and let it sit and thicken up for a while, like a few hours, then Squeegee it hard into the affected areas all will be well.

    I am also starting to understand the amount of sanding involved in getting ready to put final coats of paint on. Whoo weeeee.

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  20. #55
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    Yes, some people want to leave the weave partially unfilled to get that non-skid effect then, as you're experiencing you get problems with painting it.

    If the weave is completely filled, and you have a very smooth surface, you now have a slippery surface! Then you have to add non-skid to your paint!
    it seems counterproductive, because I'm guessing the surface was probably okay even though there was plenty of rot underneath.

    You still you did a wonderful job!

    "In for a penny"

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    Denise, Bristol PA, Oday30, Anchor Yacht Club, On tidal Delaware River. my current project; http://forum.woodenboat.com/showthre...0-Ducker-Resto

  21. #56
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    Default Re: Tips and tricks for laying down glass over ply.

    If there is another chance to do this, Phil, roll the peel ply onto a mandrel, like a plastic pipe, or cardboard tube, then unroll it onto the saturated cloth.

    It is much easier to get it down smoothly.

    Peace,
    Robert

    P.S. Itís also a good way to put down long or otherwise large pieces of cloth. Just roll them up, unroll in place, and saturate...

  22. #57
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    Quote Originally Posted by Phil Y View Post
    So I learned today that after putting down the glass and epoxy I probably should have gone over it with another coat of epoxy, maybe with some filler in it? I did a coat of high build primer a while ago, and ended up with lots and lots of pinholes not covered or filled by the primer. Advice from my paint supplier is that If I mix up another batch of primer and let it sit and thicken up for a while, like a few hours, then Squeegee it hard into the affected areas all will be well.

    I am also starting to understand the amount of sanding involved in getting ready to put final coats of paint on. Whoo weeeee.

    Sent from my CPH1851 using Tapatalk


    Look on the bright side: it's a tool-buying opportunity!

    Start ( or look up) an ROS thread.



    Kevin


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    There are two kinds of boaters: those who have run aground, and those who lie about it.

  23. #58
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    Default Re: Tips and tricks for laying down glass over ply.

    "So I learned today that after putting down the glass and epoxy I probably should have gone over it with another coat of epoxy, maybe with some filler in it?"

    There are a few ways to do this for sure. I've chosen to finish my decks smooth on Accolade, using WEST 407 as filler. I then used Zinzzer BIN as a primer, not sure if this step is necessary but it helps to reveal any misses in my fairing job. After finish painting I mask off and put non-skid where I want it using the Interlux Interdeck. I'm happy enough with the finish product, and easy enough to refresh.


    Good luck with the rest of your deck project! / Jim

  24. #59
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    Quote Originally Posted by chas View Post
    "So I learned today that after putting down the glass and epoxy I probably should have gone over it with another coat of epoxy, maybe with some filler in it?"

    There are a few ways to do this for sure. I've chosen to finish my decks smooth on Accolade, using WEST 407 as filler. I then used Zinzzer BIN as a primer, not sure if this step is necessary but it helps to reveal any misses in my fairing job. After finish painting I mask off and put non-skid where I want it using the Interlux Interdeck. I'm happy enough with the finish product, and easy enough to refresh.


    Good luck with the rest of your deck project! / Jim
    That looks great Jim, got any more pics? What colour is that? I'm trying to decide whether to use interlux or kiwi grip. Leaning towards Interlux seeing yours. Is it hard to get a nice even distribution of the grippy grains? Did you sprinkle on and paint over or mix into the paint?

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  25. #60
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    Quote Originally Posted by Breakaway View Post
    Look on the bright side: it's a tool-buying opportunity!

    Start ( or look up) an ROS thread.



    Kevin


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    I have 3 on board already. So it's just sanding discs I'm buying. Really boring.

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  26. #61
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    Quote Originally Posted by amish rob View Post
    If there is another chance to do this, Phil, roll the peel ply onto a mandrel, like a plastic pipe, or cardboard tube, then unroll it onto the saturated cloth.

    It is much easier to get it down smoothly.

    Peace,
    Robert

    P.S. It’s also a good way to put down long or otherwise large pieces of cloth. Just roll them up, unroll in place, and saturate...
    Yeah that was suggested above, and I did try it. I can see it working on a flat panel of ply in the shop. Not so much on a deck with cabins and shroud plates and curves and whatever else. Or maybe with more practice. But it wasn't the right approach for me.

    I'm quietly hoping I don't get another opportunity to do this.

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    Last edited by Phil Y; 06-03-2019 at 05:39 PM.

  27. #62
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    Default Re: Tips and tricks for laying down glass over ply.

    Quote Originally Posted by Phil Y View Post
    Yeah that was suggested above, and I did try it. I can see it working on a flat panel of ply in the shop. Not so much on a deck with cabins and shroud plates and curves and whatever else. Or maybe with more practice. But it wasn't the right approach for me.

    I'm quietly hoping I don't get another opportunity to do this.

    Sent from my CPH1851 using Tapatalk
    Sure. Sorry to bother.

    I never give advice I read somewhere, though, and this is a technique I’ve been using for years with various sized and shaped pieces of cloth, some much more sophisticated than any boat.

    I’ve used it on dozens of boats, too...

    Peace,
    Robery

  28. #63
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    Default Re: Tips and tricks for laying down glass over ply.

    "Did you sprinkle on and paint over or mix into the paint?"

    Interdeck is a stand alone product. I rolled it on with those foam mini-rollers, which seems easy on bare feet and knees. I might look for a more aggressive texture if I was going offshore. Colour is off-white. / Jim

  29. #64
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    Quote Originally Posted by amish rob View Post
    Sure. Sorry to bother.

    I never give advice I read somewhere, though, and this is a technique I’ve been using for years with various sized and shaped pieces of cloth, some much more sophisticated than any boat.

    I’ve used it on dozens of boats, too...

    Peace,
    Robery
    Don't be sorry, I appreciate the advice, and can see how the roll would be sooo much easier. But I fumbled it, is all.

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  30. #65
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    Quote Originally Posted by chas View Post
    "Did you sprinkle on and paint over or mix into the paint?"

    Interdeck is a stand alone product. I rolled it on with those foam mini-rollers, which seems easy on bare feet and knees. I might look for a more aggressive texture if I was going offshore. Colour is off-white. / Jim
    Oh Ok thanks. Must be a slightly different product than I'm looking at. I'll check it out.

    Indeed. Interdeck is a one part polyurethane with anti slip already in it. I'm thinking of using 2 part Perfection, to which you have to add granules, either by sprinkling on wet paint then overcoating, or mixing in before applying.

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    Last edited by Phil Y; 06-03-2019 at 09:58 PM.

  31. #66
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    Default Re: Tips and tricks for laying down glass over ply.

    thank's forposting, very inspiring

  32. #67
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    Quote Originally Posted by bertha View Post
    thank's forposting, very inspiring
    Cheers. It turned out to be a much bigger job than I had hoped, but I kind of expected that. One of those things where you start and just keep going.

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  33. #68
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    Quote Originally Posted by Phil Y View Post
    Oh Ok thanks. Must be a slightly different product than I'm looking at. I'll check it out.

    Indeed. Interdeck is a one part polyurethane with anti slip already in it. I'm thinking of using 2 part Perfection, to which you have to add granules, either by sprinkling on wet paint then overcoating, or mixing in before applying.

    Sent from my CPH1851 using Tapatalk


    The best non-skid you can get for your beautiful new deck is two pot paint with the granules.

    And the best way to do it with out spraying is to do it in sections, lay down one coat of two part paint and then completely cover with granules. Let it dry off for an hour or two depending on temperature then go over it again with a the next thinned coat.

    Alternatively you could roll it, but it’s best to have another person stir the paint while you roll it out and do a couple of test panels because you don’t want to put too many particles in the paint which is a real temptation And a classic beginners mistake




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  34. #69
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    I forgot to say, brush off the excess granules after that first coat has dried And before you put the next coat down


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  35. #70
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    Thanks Paul, when you say " lay down" are you meaning with a brush rather than a roller? Or is roller Ok? Just confused where you say "or you could roll it" Unless you are meaning premix and roll, which would explain the need for a stirrer. The local International rep tells me the method you outline is best, paint, sprinkle, wait, brush off, paint. He suggested a short nap mohair roller.

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