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Thread: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

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    Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    I have a 10 year old inground fiberglass pool where the gelcoat is in pool condition.

    I am considering installing a vinyl liner.

    There are retrofit tracks or channels made which will allow for the conversion to vinyl. The track is installed at the top inside edge of the pool.

    I know you cam apply epoxy paint to a pool and that you can re-apply gelcoat. Both processes are controversial and have very mixed results.

    I would like to know if any folks have tried, or know others who have tried this kind of vinyl conversion and how it worked out.

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    I'd go with vinyl... Less headaches in the long run and the liner can be custom fit....
    Intex Rectangle 18 x 9 x 52', 4544 gallon (18000 litres), 0.75 hp pool pump, 100 sqft Zodiac Titan Cartridge Filter - 40mm, Stenner Peristaltic Pump chlorine injection system, Intex Over The Wall Skimmer, Intex Fittings with 40mm plumbing Lil Patch Of Heaven. Build/Construction http://www.troublefreepool.com/threa...lice-of-heaven

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    I don't know. I could have missed it, but I don't recall seeing anyone here doing that. Maybe someone can chime in on it. Getting the correct fit seems like it would be quite the task.
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    JasonLion's Avatar
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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Putting vinyl liners in plaster pools that are leaking comes up now and then. I haven't heard of anyone doing the same thing with a fiberglass pool, but the procedure and results should be extremely similar. In plaster pools this works quite well as long as the plaster surface is reasonably smooth (no sharp edges, giant cracks, etc). The only real disadvantage is that the track that holds the top edge of the liner almost always looks a little out of place.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    I've just posted pictures of mine.... still not really sure what I have, but putting a vinyl liner inside of the fiberglass walls was recommended by two different companies. As you can see, "painting" is not a really good option for bad gelcoat.... If you recognize what I have, please post to MY thread. I'm not trying to hijack this one, but thought I might show the problems of a "Plan B" solution.....


    http://s1122.photobucket.com/user/ewkearns/slideshow/

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Quote Originally Posted by JasonLion View Post
    Putting vinyl liners in plaster pools that are leaking comes up now and then. I haven't heard of anyone doing the same thing with a fiberglass pool, but the procedure and results should be extremely similar. In plaster pools this works quite well as long as the plaster surface is reasonably smooth (no sharp edges, giant cracks, etc). The only real disadvantage is that the track that holds the top edge of the liner almost always looks a little out of place.
    Yes i agree that the track might look a little out of place, but assuming I can get it in a white finish, it hopefully should blend pretty well with my white fiberglass. I can get a 12x24 basic liner 20 mil bottom and 28 mil walls for about $450 and one with 4 full width steps for about $790 plus installation.

    Here's the link to one track supplier Cardinal Plastics. It is the QP521 or side mount. No doubt there are other mfg's and other designs too. http://cardinalsystemsinc.com/produc...-track/page/2/

    I would sure like to see pics of an installed job somewhere, or to learn of others successes with this approach.

    I've googled every search term I can think of and nothing shows up regarding vinyl liners in fiberglass pools! Can the application be this rare?

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Most generally fiberglass pools aren't lined with vinyl since you will have to dig up and install new returns and or main drains. Your best bet usually is to have the gel coat reapplied. There is a new finish product out called ecofinish. It is applied with a special applicator gun and looks to be quite the finish. I am going next week to learn more about their process and system.
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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Sorry I keep forgetting I'm in Australia and there's a company that specifically does this kind of thing.... I'll post a link and maybe you could show it to some of your guys...

    http://www.abgal.com.au/
    Intex Rectangle 18 x 9 x 52', 4544 gallon (18000 litres), 0.75 hp pool pump, 100 sqft Zodiac Titan Cartridge Filter - 40mm, Stenner Peristaltic Pump chlorine injection system, Intex Over The Wall Skimmer, Intex Fittings with 40mm plumbing Lil Patch Of Heaven. Build/Construction http://www.troublefreepool.com/threa...lice-of-heaven

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Quote Originally Posted by swimcmp View Post
    Most generally fiberglass pools aren't lined with vinyl since you will have to dig up and install new returns and or main drains. Your best bet usually is to have the gel coat reapplied. There is a new finish product out called ecofinish. It is applied with a special applicator gun and looks to be quite the finish. I am going next week to learn more about their process and system.
    Not sure about a problem with returns or drains. From the liner replacement installation videos I've seen, they just show the drain cover being removed, the liner goes in, and they trim out the vinyl at the drain opening by 'feeling for the hole through the vinyl' and reinstall the drain cover with maybe 6-8 screws.

    Since returns don't have the same kind of covers with screws, possibly there is not as good a way to cut them open and re-install them where they will be water tight.....and that's why I'm trying to "look before I take the leap!" Tips there would be appreciated.

    The Austrailan site clearly shows track and liners made to re-line a variety of differently constructed pools thought I could not find a specific reference to vinyl.

    As one other poster mentioned, there have been many Gunnite pools re-lined with vinyl, with apparently pretty good success. Anyone know of a reason that re-lining a fiberglass would be much different?

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Simply installing vinyl with the existing drain/return fittings will never work. The fittings shown in those videos have already been replaced with vinyl liner appropriate fittings. Replacing the fittings is a necessary part of the process. As I said before, this approach is rare, but is occasionally done, and can work. However, it is almost never worth it. Refinishing the fiberglass will almost always end up being less expensive and give a better end result.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    I've done a lot of research on fiberglass refinishing with pools and it is very controversial due to chlorine exposure, with a wide array of approaches tried and highly variable outcomes. Even the re-application of gelcoat is generally not recommended. Most chemists at the gelcoat manufacturers say not to try. They say you can't use the same resin used in pool factories as it's a multi-layer process, and it turns out that the under layer is key. They say if you try gelcoat only it will likely fail, chalk and peel. The success rate with many epoxy paints is even more checkered and dubious - despite their claims.

    So back to liner. It is a surface you can count on and won't peel flake or chip, though the life is finite. One real challenge seems the measurements. With sloping walls and radius at the bottom and sides, at the corners, and at all steps it's a lot!

    On the subject pool we have 1.5" female threaded return ports. Not sure if the threaded portion is flush or if it protrudes a little.

    Does anyone know of a link to a site which would have the correct ports we might have to switch to? Seems likely it would call for the same ports needed for Gunnite converted to vinyl, and surely many hundreds of those have been converted, if not more.

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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    It is a Hayward number sp 14xx I think. Right now I am drawing a blank. You will have to dig up the plumbing under the deck to put these in. There are companies that refinish fiberglass I will try to forward some of their website info to you.
    Over 30 years in the pool business
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    Re: Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Quote Originally Posted by swimcmp View Post
    It is a Hayward number sp 14xx I think. Right now I am drawing a blank. You will have to dig up the plumbing under the deck to put these in. There are companies that refinish fiberglass I will try to forward some of their website info to you.
    Please forward to me, as well..... I'm looking at the same problem and none of the companies I have approached have responded.

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    Anyone Had Success In Lining a Fiberglass Pool With A Vinyl Liner?

    Quote Originally Posted by swimcmp View Post
    It is a Hayward number sp 14xx I think. Right now I am drawing a blank. You will have to dig up the plumbing under the deck to put these in.
    Thanks for the tip with a little more specifics on the return fitting.

    As far as digging up concrete, in order to replace return plumbing that's something that I won't be doing - new liner or not. My fiberglass is holding water nicely, and will continue to - either way. Though I may have to come up with a custom round flange or faceplate.

    If you think about it, in its' most basic form a liner would just at a 28 mill new pool interior surface. A new gel coat (though controversial in terms of longevity) would also add something like another 10-15 mill coating to the inside surface. Since the fiberglass holds water, if I can find a return fitting which works with the current plumbing and the vinyl I'll use it. Otherwise I plan to trim neatly around each return and generously silicone the vinyl to the pool wall around the returns - possibly adding a custom round flange ring and gasket screwed to the wall With the main drain I'll do the same thing except there I will also remove the grill, trim out the opening, silicone vinyl to the fiberglass, and re-attach the grill. Update... one liner expert says silicone may not last in chlorinated water! (if true, I may have to find an alternative)

    Like the plan with the returns, one liner manufacturers suggests that the blunt end of the liner which will terminate at the steps, be Siliconed there to the pool wall on either side and base of the steps, and terminated with a custom face plate material. A similar technique is apparently used when free standing plastic steps by Quaker Plastics are incorporated into a liner pool. In that case, Quaker makes a proprietary track which extends around the perimeter of the face and vertical sides of the steps when it meets the liner and that track has a gasket and seals it. It's applied with ss screws.

    Without covering the steps at the shallow end, I can do this for about $450, so it seems I have little to loose and lots to gain...potentially.

    I'd really appreciate hearing from anyone with experience retrofiting concrete or fiberglass pools with liners! I will be mostly swayed by any actual field reports, because there just has to be real world experience out there which could benefit many of us!

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