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  1. #1
    Sonny Edmonds
    Guest

    RE: Spraying Helmsman

    It specifically states "Do not thin." on the website for the product.
    So I would say you are to brush it on, like they say.
    [link:minwax.com/products/protective/helmsman-direct.cfm | Minwax Helmsman Spar Urethane]
    (See the bottom line here)

    Maybe what you want is a different product, specifically for spraying?

    :D

    [link:home.att.net/~paul.edmonds/|Sonny Edmonds ]
    Saugus, CA
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  2. #2
    Member
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    Jun 2004
    Location
    Albuquerque, New Mexico.
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    640

    RE: Spraying Helmsman

    That's what I get for not reading the fine print.

    So now amending the question, what is a good spraying option for outdoor protection? Out here where it freezes in the winter and gets above 100 in the summer.

    thanks

  3. #3
    Member
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    May 2006
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    RE: Spraying Helmsman

    Helmsman Spar Urethane can be thinned 50/50 with mineral spirits for spraying. However it is important that you:
    1. Keep it constantly stirred or the 2 will separate in the spray can/gun.
    2. Make darn sure your wood has 15% or less water content, or the mineral spirits will cause the excess moisture to come to the surface in the form of whitish splotches, droplets, or other whitish looking junk that doesn't sand off readily....you'll ruin your wood.
    3. Mix only what you need at the spraying moment... and not for the whole job.
    4. The mineral spirits will take away, a tiny bit, from the luster or gloss of the urethane alone, so the finish will not be quite the same as if you brushed on the pure urethane.
    5. Any mix your have left over, don't attempt to save it. It has no shelf life.
    6. I suppose you know to clean your tools, well, after spraying.

    What are you spraying? Do you need a finish comparable to a floor finish...if so, then consider Varethane. The water base Varethane dries really fast, so 1) by the time you finish spraying the first coat, you can immediately begin again with the second coat, then the third, etc. and 2) clean your tools immediately after use.

    1Sonny1

  4. #4
    Member
    Join Date
    Jun 2004
    Location
    Albuquerque, New Mexico.
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    RE: Spraying Helmsman

    I'm spraying various outdoor furniture and trim with a lot of small slats that are a pain to brush.

    Plus I'm on a spray kick and am spraying everything I can except the dogs at this point. I gave my kids a soap and water HVLP shower the other day. Talk about smooth finish.

    Thanks for the ideas. And yes while most of my shop is often quite unclean, the spray stuff is kept very clean.

    carlos

  5. #5
    Member
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    May 2006
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    RE: Spraying Helmsman

    Helmsman spar urethane is not the product for finishing outdoor furniture, however I finished a swing, protected under a patio, and it has held up for 10+ years. Consider tung oil or a marine finsih for a more durable finish in a sun exposed scenario.

    1Sonny1

  6. #6
    Member
    Join Date
    Jun 2004
    Location
    Albuquerque, New Mexico.
    Posts
    640

    Spraying Helmsman

    Anyone have a good thinning percentage for spraying Helmsman spar effectively?

    thanks
    carlos

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