Using boat polishes and waxes

Discussion in 'Motorhome Detailing' started by Whizzer, Mar 17, 2018.

  1. Silver-Fox

    Silver-Fox Funster

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    I would only use S R P on non Gel coat applications.

    If used it still needs a coat of wax to protect the body work.
     
  2. Bobby22

    Bobby22 Funster

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    Reading other posts with people using products they get 'recomended' then having chalky or decal problems make me stick to the book. The stuff i use is made for motorhomes and states it is good for all surfaces, if it let me down i might have a case.
    What might be good on one gel coat might have a completly different affect on others.

    If in doubt get in contact with the manufacturer and do as they tell you.

    I had a three year old Swift ( from new ) and never polished or waxed it. It looked like new when i traded it. ( apart from faded dark blue plastic extrusion ). Using only Fenwicks washing products.......i still have the original bottles more than 4 years on.
     
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  3. Charlie

    Charlie Funster

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    AutoGlym SRP is one of the lowest cut polishes on the market. So it will take longer and be harder to achieve good results. It’s a polish that is popular with car dealers as it contains fillers which hide swirling marks but not for long.

    Try a different polish but still use a low cut one. Have a look on Ebay at the Menzerna range of polishes. Not the cheapest but excellent. I use only Menzerna when polishing. It’s a quality German brand. It maintains cut and is predictable and easy to use.

    Edit.
    This would be the one you want.
    https://www.ebay.co.uk/itm/Menzerna...166439&hash=item3d44199c9b:g:b80AAOSw4yRZi4U6

    Beware. Always do a test on a panel out of sight before polishing on ALL MH surfaces.
     
  4. Clarky

    Clarky Funster

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    Many thanks Charlie.
    I assume that is OK for GRP. It is the chalky effect that was worrying me and I was wondering if the gel coat (whatever that is) had been damaged.
    If I use the polish you recommend should I just finish it with Colinite wax?

    Richard.
    PS. After your previous tutorials on vehicle cleaning I have completely changed the way I wash and look after my vehicles. It has only taken about 55 years for me to learn how to wash a car correctly. I always was a slow learner. :D
     
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  5. cornish boy

    cornish boy Funster

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    The chalky residue is pigment from the GRP and is almost always a result of UV damage.

    To rectify it needs to be polished to remove the damaged surface and then a wax protective coat used to provide good UV protection.

    As for recomending products to use, the simple answer is, I can't, because it completely depends on the type of gelcoat, depth of damage and amount of retification required as to the products I would use.

    However, I would use a light grade polish and go over at least twice to bring back a flat surface rather than going near it with a course polish and hitting the crap out of it which will only provide a very short term solution.

    GRP needs high quality UV protection and in the marine world it is getting more normal to use technology such as THIS from gtechniq but it can start to add up to some big numbers as the preperation and application is very labour intensive.

    Somewhere on here is a thread with some drawings I did to try and explain the UV issues with GRP, I will see if I can find them again.
     
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  6. cornish boy

    cornish boy Funster

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    Found it, post numbers 15, 16 and 17 on this thread HERE
     
  7. Silver-Fox

    Silver-Fox Funster

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    @cornish boy how good is the gtechniq.
    I read the blurb about lasting longer etc etc but in your experience what sort of time scale do you get out of them.

    I’ve used their products before on interiors but not used exterior products.

    Thanks
     
  8. cornish boy

    cornish boy Funster

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    @Silver-Fox To be honest, I rate it as it certainly is so much easier to keep clean and dirt just washes off with no effort.

    But....

    It is one of those things that you need to go 'all in' with. Its not just the preperation and the application, but buying the wash products and using them as recommended and sorting out any small areas straight away when the coating has been damaged.

    In terms of the marine products, lots of people are getting somewhere between 18 to 24 months but what I have been seeing is a distinct yellowing of the gelcoat at around the 18 month period. Mind you, without it the gelcoat will start to yellow at around 9 to 12 months so it is not a probelm as such.

    There is quite a lot of work to re-prep the surface again for a new application but I really believe that the benefits outweigh the costs on a yacht (motor or sail) of 50 foot plus.

    However, I haven't used it on our motorhome as the GRP is lightly textured rather than smooth and the C1 would be near impossible to apply at the tiny amounts required/stipulated.
     
  9. Clarky

    Clarky Funster

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    Thanks for the info @cornish boy.
    The van is only 3 years old and I only use AutoGlym shampoo and polish on it. The front cowl is a bit of a bugger to get at so doesn't get the attention that some other parts get. It has been polished a couple of times with AutoGlym Super Resin Polish and then topped off with their Extra Gloss Protection. I realise that the Gloss Protection isn't a wax and seems to be some sort of spirit base. Could that have damaged the GRP finish?
    Would a couple of hand polishes with SRP and finishing with Colinite wax do the trick do you think or do I need something more specialised?

    I really do appreciate the advice.
    Richard.
     
  10. Silver-Fox

    Silver-Fox Funster

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    @cornish boy thanks for the quick reply.
    Looks like I’ll stick with what I do at the mo with my vehicles then.

    It amazes me how many people get sucked in by the main stealers with their car coat add on and the cost.

    Thanks again
     
  11. Silver-Fox

    Silver-Fox Funster

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    @Clarky after a polish you could try project 64 by Autobrite as it’s a sealer and enhancer.
    But I’d always use something like Collinite on top of it.
     
  12. cornish boy

    cornish boy Funster

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    Whenever I am in the buyers seat, I always tell the rep that unless they want to give me 80% of their kickback payments as discount, I am not interested.... :)
     
  13. cornish boy

    cornish boy Funster

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    It is quite hard to offer any advice without seeing it in the flesh. Personally I would use a 3M or Farcela product as I know and trust them, possibly something like Farcela G10 which can be used by hand as well as machine. A word of warning, dont polish in direct sunlight and make sure you keep shaking/stiring the polish pot so the contents don't settle.
    Then buy a good quality wax with UV protection made for GRP and apply two coats.

    As for what caused the oxidation, it could have been just the lack of UV protection. What you are likely to find is once you start polishing, the gelcoat will look whiter as you remove the yellowed, damaged surface. As you would expect, you cant just keep polishing away at the gelcoat year after year so it is important that you apply that good layer of wax protection and keep topping it up regularly throughout the year.
     
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  14. bluesurf989

    bluesurf989 Funster

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    Our MoHo needed a good polish a few weeks ago and i used Boat Buddy (recommended), pukka stuff, got rid of all the black streaks and has left a super shine with no polishing marks at all(y)
     
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  15. Emmenay

    Emmenay

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    @jezport I took delivery of these two products today so made a start on one side of my MH. Once I got used to the characteristics of them both I was able to steam ahead with a DA polisher. I managed to do the top half of one side from ladders in a couple of hours but have stopped for the evening. Am I pleased with the result so far? See for yourselves...PS. This is my first go with a polisher.
    DSC_0817.JPG
     
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  16. jezport

    jezport Funster

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    I'm glad to hear you are happy with the products, Your van looks great. We sell a lot and I even get people phoning me to thank me as they are so happy. Please leave a review on eBay.
    If anyone wants some I will be at the Stoneleigh show please message me and I will take it with me.
     
  17. ploots

    ploots Funster

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    I bought some of @jezport surface restorer and ive just started to use it on my van and im really happy with the results, my rear panel was chalky and dull now it has a sheen to it, i just need to polish it then wax it to finnish it off, but the sun has finnished me off at the moment back to it later when its cooler :D
     
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  18. Basildog

    Basildog Funster

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    Would the Menzerna be ok on the Hymer metallic paint before waxing as I have always used SRP before ?
     
  19. Charlie

    Charlie Funster

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    Yes. But as always take care and do a small test area never go to rapid. That applies to all polishing.

    The SRP is just about the lowest cut polish you can buy. The Menzerna I reccomended while still a low cut and therefore safe does have considerably more cutting ability.

    A couple of observations.

    Your metallic paint will have a lacquer over base finish. This is Good. Should be easy to polish and will come up fantastic.

    German paint on say Audi’s and BMWs is notoriously hard. Whether your Hymer will have typically hard German paint I’m unsure. Either way softly softly cachee monkey.
     
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  20. Basildog

    Basildog Funster

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    I will be doing it by hand I think so might take a while
     

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