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Thread: floor rot

  1. #16

    Re: Formosa floor rot

    Agree with Ronnie.. would expect him to be helpful. Most likely he hasnt seen emails.

  2. #17

    Re: Formosa floor rot

    Quote Originally Posted by Pazz01 View Post
    If you put another ply floor in, make sure you put a moulded ventilation bung in (not sure of exact name). They are plastic and round and the top part screws into the bottom sections that is screwed into the floor with the centre cut out.

    Open these up after each trip and whilst the boat is stored in teh shed. they make all the difference and prevent mositure build up whilst in storage.

    The original floor of ours was perfect and within 18 months of owing it, it was all rotten. We installed those bung type things and the floor has been perfect for about the last 15 years.

    Pazz
    This is really interesting (I Think) but I dont really understand the fitting you are describing..? is it a mesh type vent like a wall vent..? or a screw in plastic porthole that you remove for storage ventilation..?

  3. #18

    Re: Formosa floor rot

    Mindi probably one of these:

    http://www.biasboating.com.au/c-53-i...ion-ports.aspx

    cheers fnq



  4. #19

    Re: Formosa floor rot

    Sorry Mindi, same as those in FNQ's link.

    I open them up when we it goes into the shed. Shine the tourch around inside and see if there is any water laying there and dry up as much as possible.

    These will save your timber floor for years. It's down the trick on ours. We've got about 4 in our boat.

    Pazz

  5. #20
    dean grieve
    Guest

    Re: Formosa floor rot

    Quote Originally Posted by boodo View Post
    Hi Lads, I have a 2yr old 5.2m centre consol formosa and my floor is absolutley buggered with rot, I was wanting to know if anyone has had this problem with these or other boats in this short time frame. The boats well looked after and stored in a shed when not in use. I have sent manufacturer a few emails but no reply as yet.
    I can asure you that if you ring duncan at formosa he will be more than happy to help you .You should contact your dealer as that is part of their job.If you have any problems please contact me with your ph no .

  6. #21

    Re: Formosa floor rot

    I was talking to a dealer today and questioned them on the type of ply that formosa use. He informed me that they were using imported ply up until 2 years ago but changed to a locally supplied ply due to quality issues with the imported ply
    Dave

  7. #22

    Re: Formosa floor rot

    Quote Originally Posted by Dave71 View Post
    I was talking to a dealer today and questioned them on the type of ply that formosa use. He informed me that they were using imported ply up until 2 years ago but changed to a locally supplied ply due to quality issues with the imported ply
    Dave

    Geez guys
    I don't want to get out of sorts for this but ----------With all this talk to other dealers about Formosa don't you think it would be a better idea if someone actually talked to Duncan and got the real facts from him. This is getting me abit cheesed as i can only praise those guys for the excellent work and service they provided when we ordered our boat. It didn't matter what we asked there was always an answer and a good result-- Our boat is testimony to the care and effort they put in for us.

    Please phone Duncan -- I will even give you his number if that will help.

    Ronnie

  8. #23

    Re: Formosa floor rot

    Mate have a thought of using Celuka will depend on how far apart your frames are but 12mm would cover it. It is great stuff. Most large ply places will have it.
    FISHING FISHING AND MORE FISHING. IS THERE ANYTHING ELSE TO DO?

  9. #24

    Re: Formosa floor rot

    PVC Celuka Foam Board

    Is an ideal material to replace some timbers, Celuka board has a 0.3mm external skin over a solid foam core and is extremely light weight, water resistant, has low thermal conductivity and is widely used in the graphics and building industry. Sheets are available in 10-25mm thick in white and black but may be painted to match internal/external colour schemes.
    The smooth, silk gloss finish is ideal for printing and photographic mounting and is very workable. Applications include advertising/display signage, interior fit outs to caravan, boats, partitioning, bulletin boards and cool rooms.
    FISHING FISHING AND MORE FISHING. IS THERE ANYTHING ELSE TO DO?

  10. #25

    Re: Formosa floor rot

    I had the same thing happen with my Stessco, after 1 month I noticed the floor felt a bit soft and flexing more than it should so I lifted it and found lots of rot with big fungal growths on it.

    I went back to the dealer and to his credit he got on to Stessco and they authorised it's reaplacement by a marine fit out shop and picked up all the costs, very good service I thought.

    When the guy pulled it up it wasn't sealed, but this isn't unusual as some do this to prevent warping. But he put in some hardwood ply and sealed the whole lot, haven't seen any issues in the last 2.5 years.

    You'd have rocks in your head to use marine ply, the only difference is usually the marine grade stuff has a "good face" with no knots, splits etc. Exterior and CD have the same glue.

    Hope you get it sorted out, it seems fairly common I remember another guy on here stating he had an issue with his Brooker floor.

    cheers

  11. #26

    Re: Formosa floor rot

    Quote Originally Posted by Crooked View Post

    You'd have rocks in your head to use marine ply, the only difference is usually the marine grade stuff has a "good face" with no knots, splits etc. Exterior and CD have the same glue.
    Crooked, marine ply can be very different to standard CD ply. Though the marine ply you get from the likes of bunnings will be no different other than a thin maple veneer over the pine to give 2 dressed sides. Generally a decent quality marine ply is maple, but you can also get it made from cedar and even spotted gum, though you do have to look hard for it.

    Other than the types of timber, everything else is the same, the H2 treatment (termite treatment) right down to the methods and glue used to bond the sheets.

    CD Ply will always have one good side and as long as it is properly sealed and fixed solid to the stringers, it will not warp and last a very long time.

    Any amount of moisture that penetrates the timber will eventually cause rot, no matter what the quality of timber, or make of boat. Once the moisture gets in and the rot starts then there's no stopping it going right through the panel.

  12. #27

    Re: Formosa floor rot

    OK lets lok at some plywood facts.
    both marine ply and CD ply are "A" bond resourcenol bonded material, all ply rated as exteriour will be "A" bond. same glue

    CD ply has a good face and a bad face, unfilled voids are permisable in the rear or bad face and in the intermediate plies, filled voids are permitted in the good face, some brands the good face voids will simply be bogged the better brands the voids will be punched and patched.

    there are two standards for marine ply we see.

    Australina standard marine ply should have at least a "B" grade face with no voids and no voids thruout the material.

    most of the luan ( meranti) ( hardwood exterior) asian ply is british standard marine and may have "some voids" usulay cracks in the intermediate plies but none on the faces.....a lot of people look down on this stuff, but I have seen it left out in the eliments for over 12 months with little more than bleaching and raising of the grain.....it will rot with standing moisture.

    Now regardles of the type of ply, if it remains moist and unsealed it will rot and somtimes very quickly......the pine bassed plies may rot very redily because of the possiblity of the starch and sugar content.

    In many cases ply will fail and delaminate, due to failure in the timber and not in the Adhesive

    I have a real problem with carpet over plywood floors exposed to water/ moisture even when sealed.

    Oil will provide very poor protection against moisture and little or no protection against mould unless it has some sort of inhibiter in it

    if you are going to replace your floor make sure it is well sealed bothe sides and double on the end grain.

    then seriously consider removable mats.

    the last floor that came out of my boat, came out as a delaminating mess the last few trips with a dustpan.....previous owned failed to seal the floor properly.

    cheers
    Its the details, those little details, that make the difference.

  13. #28

    Re: Formosa floor rot

    I spoke to a dealer today about the ply used in the formosa boats. He informed me that formosa were using an imported ply but changed about 2 yesars ago to a local supplier because of quality issues with the imported ply.

  14. #29

    Re: Formosa floor rot

    Quote Originally Posted by Dave71 View Post
    I spoke to a dealer today about the ply used in the formosa boats. He informed me that formosa were using an imported ply but changed about 2 yesars ago to a local supplier because of quality issues with the imported ply.
    Disorderly quote : Isnt part of the reason Formosa's are affordable is they have the cheaper option of a ply floor...??


    Dave
    To lay this to rest whoever the dealer was you spoke to has his information totally wrong. We have spoken with Duncan and he gets his ply from the same place now as he did ten years ago but the quality now is of higher grade.

    I would like to see this problem solved for the bloke who started this thread and everyone get the right story so I think at this stage the best option is to consult with Formosa and have it resolved.

    Ronnie

  15. #30

    Re: Formosa floor rot

    Quote Originally Posted by Mrs Ronnie H View Post
    Disorderly quote : Isnt part of the reason Formosa's are affordable is they have the cheaper option of a ply floor...??


    Dave
    To lay this to rest whoever the dealer was you spoke to has his information totally wrong. We have spoken with Duncan and he gets his ply from the same place now as he did ten years ago but the quality now is of higher grade.

    I would like to see this problem solved for the bloke who started this thread and everyone get the right story so I think at this stage the best option is to consult with Formosa and have it resolved.

    Ronnie
    Or was doing what dealers do best and lying about the competition... bet he wasnt a Formosa dealer. Dont bother asking why I am a cynic..just read the thread....the dealer is inviting the enquirer to believe that they had a problem and had to change supply...and by implication thats why the guy's floor has rotted. They just cant help themselves....given Duncan's reply to Ronnie this supply story can only have come out of his imagination.
    Ronnie there must be some reason why the owner wont contact Duncan so give up on it I would reckon..? Maybe there is more to the story than we are seeing.
    For the record I dont own a Formosa but have seen the operation and met Duncan and rate both highly.

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