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Thread: Fiberglass

  1. #21
    Extreme Koi Member Rank = Mature Champion Andre Asagi's Avatar
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    Good stuff everyone.

    I'm about to start a Holding/QT pond and wondered if there is a minimum temperature?

    I plan to complete the pond in 4 to 6 weeks so it will be Christmasish...Would i be better off using a cheap pvc liner till it warms up?

    There will be fish in there as soon as its safe to put them there as all or some from the main pond will be in there while i re-do that.

    Big Talk but just been made redundant so i thought i'd use the time and cash before i blow it all.

    Amsterdam is calling. Must resist and get cracking.

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  3. #22
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Quote Originally Posted by Andre Asagi View Post
    Good stuff everyone.

    I'm about to start a Holding/QT pond and wondered if there is a minimum temperature?

    I plan to complete the pond in 4 to 6 weeks so it will be Christmasish...Would i be better off using a cheap pvc liner till it warms up?

    There will be fish in there as soon as its safe to put them there as all or some from the main pond will be in there while i re-do that.

    Big Talk but just been made redundant so i thought i'd use the time and cash before i blow it all.

    Amsterdam is calling. Must resist and get cracking.
    I try to avoid doing any fiberwork when the temperature drops below 10 degrees, unless you have some way of heating the work area (indoor workshop).

    the curing process simply stops if the temperature drops, but it will start again if you raise the temperature.

    but you have to be aware that making a tank is quite abit of work, and it does take some time to get it finished due to the curing times, so if it's something you need in a couple of days you will be hard pressed, but if you have the time a fiberglass tank is better

  4. #23
    Extreme Koi Member Rank = Mature Champion Andre Asagi's Avatar
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    Thanks mate. It's going to be a small block built pond as opposed to a tank. Might be wise just to use the liner then till temps are regularly better. I haven't seen the temps today but it was a bit nippy here in West Midlands

  5. #24
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Sorry for the delay, was working against the clock on the indoor tank, with winter comming in fast here

    Some exsamples of fiberglass issues, there is 3 to each slide. First picture is wet the next 2 are cured from top and bottom sides

    First layer not 100% soaked
    ImageUploadedByTapatalk1417954789.362549.jpg
    ImageUploadedByTapatalk1417954801.398947.jpg
    ImageUploadedByTapatalk1417954814.329651.jpg

    Air buble between the layers
    ImageUploadedByTapatalk1417954883.162020.jpg
    ImageUploadedByTapatalk1417954892.678216.jpg
    ImageUploadedByTapatalk1417954902.361391.jpg

    Good soak and no trapped air
    ImageUploadedByTapatalk1417954950.962072.jpg
    ImageUploadedByTapatalk1417954962.128594.jpg
    ImageUploadedByTapatalk1417954971.695834.jpg

    Hope this helps

  6. #25
    Cheers for the pics mate:-)

  7. #26
    Extreme Koi Member Rank = Grand Champion john1's Avatar
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    Great thanks Frich
    John

  8. #27
    Extreme Koi Member Rank = Jussai bowsaw's Avatar
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    can you use rendering mesh to assist with the render layer before glassing? I do not see how a few mm of insulation will do any more for me than take a little less time to apply, there should be more than enough latent heat in the ground 1m+ down to keep the temperature higher than 6 degrees and in summer will allow the water to not get excessively hot either

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  10. #28
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Quote Originally Posted by bowsaw View Post
    can you use rendering mesh to assist with the render layer before glassing? I do not see how a few mm of insulation will do any more for me than take a little less time to apply, there should be more than enough latent heat in the ground 1m+ down to keep the temperature higher than 6 degrees and in summer will allow the water to not get excessively hot either
    i didnt use any kind of insulation in mine. mainly because i belive that koi should have a natural summer/winter cycle, so i will just cover the pond to make sure it doesnt freeze over.

    but yes generaly 1m below ground lever you should have 8 degrees all year round, so it will help heat up the pond in winter and cool the pond in summer

  11. #29
    Hi Frich
    I have read through your guide several times and can't work out whether each length of glass should overlap each other or is it butted up to each other on the first layer like hanging wallpaper, and then overlap the joints on the second layer?
    Cheers
    Richard


    Pond build in progress.

  12. #30
    'for the best strength you need to put minimum 2 layers on top of each other while they are wet, with an overlap between sheets, minimum overlap should be around 5cm and try not to overlap in a corner.'

    Take from first post.

    Andy

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  14. #31
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    as andy mentioned you need an overlap at each sheet of around 5-10cm

    i only used 1 llayer of 450 grams on my pond, it's not important with extra layers if your backing is good. (in my case hollow blocks with reinforced concrete)

    if you where to make a tank able to hold 30-40m3 of water at a height of 1,8m you would need alot more then 2 layers

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  16. #32
    Extreme Koi Member Rank = Nanasai richsugden's Avatar
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    Is there a reason not to overlap the cones ?

  17. #33
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    A corner will allway be a stress point, so keep ovelaps 10-20cm away from the corner where possible.

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  19. #34
    Extreme Koi Member Rank = Nanasai richsugden's Avatar
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    Thanks got it now .You bend the sheets in to the corner

  20. #35
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Yep

    Also remember if you cant put up the next sheet while its wet, you need to wait till it's cured and sand down the overlapped area.

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  22. #36

    fiberglassing

    i only used 1 llayer of 450 grams on my pond, it's not important with extra layers if your backing is good. (in my case hollow blocks with reinforced concrete) sorry but i started a new thread to night before i saw this one .my small tank is 10x3x3 concrete blocks and cement rendered and was painted 10 years ago and as had a liner in for the last 5 years i wont to glass it to do away with the liner .as its a strong built tank can i get away with one layer sorry i meant to quote frich

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  24. #37
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Quote Originally Posted by diy.col View Post
    i only used 1 llayer of 450 grams on my pond, it's not important with extra layers if your backing is good. (in my case hollow blocks with reinforced concrete) sorry but i started a new thread to night before i saw this one .my small tank is 10x3x3 concrete blocks and cement rendered and was painted 10 years ago and as had a liner in for the last 5 years i wont to glass it to do away with the liner .as its a strong built tank can i get away with one layer sorry i meant to quote frich
    you can stick to 1 layer with no problems at all.

    especialy since you have allready had water in it for 10 years, so you are 100% sure it's solid and not going to give in any way. remember the fiberglass is only there to cover small cracks in the concrete.

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  26. #38
    thanks for info , i now have to work out the amount of materials i need . i will look on you tube to find as much info i can be for i start i dont know much about fiberglass but i will do my homework first .

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  28. #39
    Extreme Koi Member Rank = Hassai Frich's Avatar
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    Quote Originally Posted by diy.col View Post
    thanks for info , i now have to work out the amount of materials i need . i will look on you tube to find as much info i can be for i start i dont know much about fiberglass but i will do my homework first .
    just meassure out the total area you need to cover, and then find a shop that sells it close to you.

    if you know the area they will know how much you need.

    but normaly you need 10% more glass to be able to make the overlaps, and a 450gram takes around 1,5kg resin per square meter (300gram is around 1kg)
    if you go with roughly 1kg per square meter of top coat you should have enough for all plus abit to make repairs with.

    but as mentioned earlyer in the post make sure you have proper chemical disposable gloves (not the cheap ones from B&Q) and make sure you have a proper filter mask (activated carbon)
    mask has to be able to withstand styrene vapors and the gloves should be class J i belive it is (N-heptane).

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  30. #40
    Hi all
    Being a ex fibreglasser, (mainly water slides and water features for leisure centres) there is a product for bonding to pvc pipe, can't remember the name but will speak to my old boss. Just paint it on and wait for it to turn white, it etches the plastic for a really good bond, hope this helps
    Adam

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