Restoring the clarity to your Isinglass

Discussion in 'General Discussion' started by Dave S, Oct 6, 2012.

  1. Dave S

    Dave S Well-Known Member TECHNICAL Contributor

    Oct 3, 2006
    Upstate South Carolina
    I recently went thru the work of polishing all my Isinglass on my camper canvas to restore it's clarity and thought I would share how I did that with anyone who might be interested. My boat is now six years old and the camper canvas typical goes on the boat in October and stays on until about April. (My boat stays in the water year round.) Although I have kept the Isinglass in good condition by cleaning it properly and protecting it with 303 Protectant it had gradually lost it's clarity over the years. I also realize that my method may not work as well as it did for me if your Isinglass is in real bad condition and/or yellowed.

    I did the work at home and used the following - Meguiar's Plastic Polish, a Porter Cable orbital buffer with a white foam polishing pad, a microfiber polishing pad, cotton towels, and 303 Protectant. I set up a suitable flat table to work on and then padded it with towels to keep the Isinglass from being scratched. The Isinglass should be clean before you start. I layed a piece of the camper canvas on the table and went to work. The first thing I did was take my microfiber polishing pad and put some Meguiar's Plastic Polish on it. Then I went around the inside of the canvas and polished this all by hand. The reason you do this by hand is to keep the polish off the canvas itself and to keep the buffer away from it in the next step. Now using the PC buffer with plastic polish applied to the pad go over the entire piece of Isinglass in a back and forth motion several times. When you are finished, wipe the piece with a clean cotton towel. Turn the piece over and repeat the process on the reverse side. Now hold the piece up to the light (I was working in my garage and used the out side sunlight to look thru the Isinglass). If you see any areas requiring further polishing, then make sure you take care of them. If you have any scratches that did not come out you may want to tackle them by hand using the Microfiber polishing pad and the plastic polish. If you have severe scratches that won't come out (I didn't) then you may have to use a polishing compound first followed by the plastic polish. Once you are satisfied, then apply a coat of 303 Protectant to both sides using a cotton applicator and towel.

    After I was done I had crystal clear Isinglass, the way it was when it was brand new.

    Last edited: Oct 6, 2012
  2. Mike Blake

    Mike Blake Active Member

    Jan 27, 2012
    Yankeetown FL West coast
    89 340 Sundance all Raymarine.
    Gas hogs 454X2.
    I will try it,Thanks
  3. moparlvr4406

    moparlvr4406 Active Member

    Jun 29, 2011
    Lake Monroe Indiana Fourwinds H31
    1985 340DA
    1966 SRV180
    1960 Sea Ray 600
    (2) 1963 808 Cruise-a-bouts
    twin 350hp Crusaders 4.0 Onan /
    Merc 950 SS
    Merc 650
    Merc 1100
    twin Johnson 40
    used it
    Novus plastic window restorer works better
    a 3 part kit is 15 bucks on Amazon for the big bottles
    same process though

    sorry to hijack
  4. Dave S

    Dave S Well-Known Member TECHNICAL Contributor

    Oct 3, 2006
    Upstate South Carolina
    As Jim mentioned, there may be other brands of polish and protectant that work well so please let everyone know what your experiences were.
  5. alwhite00

    alwhite00 Active Member

    May 31, 2010
    1997 250 Sundancer
    5.7 EFI/ BIII
    Do the big box stores have the meguiar's polish?

  6. KP49

    KP49 New Member

    Jul 8, 2012
    East Tennessee
    2015 220 Sundeck
    5.0 Merc
    I picked up the Meguiar's plastic polish at Advance auto, also works well on gauge lenses, nav light lenses etc - good stuff.
  7. Tonysca6

    Tonysca6 New Member

    Mar 12, 2011
    White Oak, PA/Lake Murray, SC
    Interim - Toon
    50 HP Mercury Outboard
    I did the samethis week end, did not take the glass down. I did the exterior with Meguiars and a power ball and used PLEXUS on the interior. Both products work well on the 5 year old material, the boat also sat for 4 years in S Carolina. Still have some scrtches to work on.
    Recommend both products, got both online.

    Crazy Lady
  8. Bridog

    Bridog Well-Known Member GOLD Sponsor

    Oct 4, 2006
    Gulf Shores AL / Brick NJ
    2016 19SPX OB
    Mercury 150 4S OB
    Same here. Don't know if it's better, but the Novus works great.
  9. seatray

    seatray New Member

    Nov 17, 2014
    2000 searay 270 da, a few gizmos but you'd be jealous
    4.3efi mercruisers
    good to know about the novus polish... i have just ordered a pack as am currently trying to remove the salt etching on one panel and restore the rest.i may have to replace the one panel but as these covers are only a year or so old they have been badly maintained by the previous owner.
  10. IanBat

    IanBat New Member

    Nov 19, 2011
    Sydney, Australia
    Pro Tournament 36' 1999
    Twin Cummins 5.9L 370hp B Series
    My upholster, that does all my canvas, clears etc..

    Tells me, Mr Sheen..........its cheaper and better

    Sent from my iPad using Tapatalk HD
  11. cstinehour

    cstinehour Member

    Dec 16, 2017
    2008 350 Sundancer, Raymarine C120
    T-VD 8.1 S Horizon DTS MPI MIE (T-370 hp - 276 kW)
    I have scratches in my strataglass. Their website says to never use a polisher that is used for commercial grade vinyl. Does anyone have any experience with removing scratches from strataglass?

    I tried Meguiar's plastic polish by hand and I still have some scratches. I'm thinking I need an orbital polisher. I was going to buy an orbital polisher and try Novus products at 800-1000 rpm being careful to not heat up the glass.
  12. bigblockcutlass

    bigblockcutlass Member

    May 9, 2010
    1998 Carver 370 Voyager
    1990 270 sea ray sundancer twin 4.3L
    1987 Power Play 230 Conquest
    1987 Fo
    If it is Strataglass, there website says Imar products only.
    Last edited: Jan 28, 2018
  13. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Once they get bad, usually the best product to return clarity is $$$replacement$$$.

    I have never been able to get them looking right with any polish or product. And they get bad again quickly once the coating is polished off.

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