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Thread: Making gloss paint matt?

  1. #1
    Join Date
    Oct 2012
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    Default Making gloss paint matt?

    I'm almost ready to paint. I have several cans of traditional oil based paint I've used successfully in the past (can't remember the brand, a small UK manufacturer). It's gloss, but I feel a matt finish inside would suit the traditional workboat style better.

    I remember reading somewhere about adding something to gloss paint to make it slightly matt, but have forgotten the additive.

    Any suggestions? Pros, cons?

    Thanks
    Osbert
    -
    Scratch, a Welsford Walkabout, and Selkie, a Clint Chase Drake 17 rowboat

    http://forthsailoar.osbert.org

  2. #2
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    Default Re: Making gloss paint matt?

    Flattening agent. Ask your paint supplier.


    The stuff is difficult to use. Add too little and the paint is too gloss, too much and the paint is to flat.

    Better to buy a new can of semigloss.

  3. #3
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    Default Re: Making gloss paint matt?

    Yup.
    Steve Martinsen

  4. #4
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    Canberra
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    Default Re: Making gloss paint matt?

    I haven't done this, but I'm told that the best plan is to use gloss paint to build up to the thickness you want for protection, then matt paint to finish. Apparently the gloss is harder, so provides a tougher surface on which to lay down the matt final coat (or perhaps two).

    Mike
    Visit us to see how we help people complete classic boats authentically.

  5. #5
    Join Date
    Apr 2005
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    235

    Default Re: Making gloss paint matt?

    It's silica powder -silicon dioxide.

    And what Slug said.

  6. #6
    Join Date
    Apr 2005
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    1,579

    Default Re: Making gloss paint matt?

    Petitt makes an an additive- #908 Satin Additive for their paints. Like you, I wanted a non-glossy finish for my Catboat. So I used Petitt semi-gloss white for the topsides, and their #3626 Burgandy with the 908 additive for below the waterline. Came out great!

  7. #7
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    Dec 2003
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    Portland, Oregon
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    Default Re: Making gloss paint matt?

    Around here, the generic term for this product is 'flatting paste'. If you use it... keep track of what % you add... so it can be repeated later. And keep it stirred, it does not always stay in suspension well.
    David G
    Harbor Woodworks
    https://www.facebook.com/HarborWoodworks/

    "It was a Sunday morning and Goddard gave thanks that there were still places where one could worship in temples not made by human hands." -- L. F. Herreshoff (The Compleat Cruiser)

  8. #8
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    Default

    Thanks folks! Sounds like I'm adding an unnecessary layer of complexity. The boat will be gloss!
    Osbert
    -
    Scratch, a Welsford Walkabout, and Selkie, a Clint Chase Drake 17 rowboat

    http://forthsailoar.osbert.org

  9. #9
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    Default Re: Making gloss paint matt?

    Semi gloss produces a very nice finish. The advantage to semi gloss is that defects dont show. On a gloss finish you need perfect prep , the grain must be completly filled and best craftsmanship used to avoid imperfections.

    i like semi. Much easier to produce a good looking finish becuase defects hide.

  10. #10
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    Oct 2012
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    Default

    Thanks for all the advice. I decided not to use up the paint I already have and buy Hempel Multicoat, a semigloss available from the local chandlers.

    Here's the first coat on:
    http://flic.kr/p/rRWZ8w

    (Can't link photo properly on my phone).

    Had to sand a couple of runs and some marks from the rain which came on suddenly, but looking good after the second coat which went on today.

    Very pleased with the semigloss finish. It doesn't exactly hide my mistakes, but at least it doesn't make them more obvious.
    Osbert
    -
    Scratch, a Welsford Walkabout, and Selkie, a Clint Chase Drake 17 rowboat

    http://forthsailoar.osbert.org

  11. #11
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    Dec 2012
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    Default Re: Making gloss paint matt?

    Quote Originally Posted by Osbert View Post
    Thanks for all the advice. I decided not to use up the paint I already have and buy Hempel Multicoat, a semigloss available from the local chandlers.

    Here's the first coat on:
    http://flic.kr/p/rRWZ8w

    (Can't link photo properly on my phone).

    Had to sand a couple of runs and some marks from the rain which came on suddenly, but looking good after the second coat which went on today.

    Very pleased with the semigloss finish. It doesn't exactly hide my mistakes, but at least it doesn't make them more obvious.

    Look great. semigloss is the way to go, forgiving.


    i like to use hard gloss on trim or style details. gives the boat a well cared for look with the least amount of effort.

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