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Thread: [E32-3] Insulating mast in saloon

  1. #1
    Makes Up For It With Enthusiasm Sati's Avatar
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    [E32-3] Insulating mast in saloon

    Looking at transitioning to liveaboard status on my 32-3, I've been considering insulation in the cabin, especially in the wake of an especially WINTER week here in Seattle. Today I looked around and it struck me that the mast itself is quite cold and likely sucks up a lot of heat, and maybe it'd do well to wrap it in a layer of thin, closed-cell foam - maybe 1/2 or 3/4 in thick.

    I could make it even fancier and have the foam in a Sunbrella sleeve that would zip up for easy on/off. Anyone consider insulating their keel-stepped mast before, and have any thoughts or ideas on this?
    Geoff W.
    s/v "Delightful"
    1987 E32-3
    Hull #712

  2. #2
    Principal Partner markvone's Avatar
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    Geoff,

    I don't liveaboard but I visit my boat in the water several times a week doing projects in Annapolis which is colder than Seattle. I heat it up with two 1500 watt space heaters while I'm there.

    My thought: Aluminum is an excellent thermal conductor and your mast is also filled with air that is free to circulate your heat straight up and radiate it out to the atmosphere. I'd be shocked if even a 1/2 inch foam blanket didn't make a noticeable improvement. Thicker is better.

    Mark
    Mark & Ronnie Vinette
    E36RH #21 GLIDE
    Annapolis, MD

  3. #3
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    Don't forget that your mast is full of holes and allows water to flow down inside it. Any insulation would need to be on the outside of the mast to allow proper drainage.
    Bob Morrison
    1987 E-34 Hull #15
    "Terra Nova"

  4. #4
    Makes Up For It With Enthusiasm Sati's Avatar
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    Quote Originally Posted by supersailor View Post
    Don't forget that your mast is full of holes and allows water to flow down inside it. Any insulation would need to be on the outside of the mast to allow proper drainage.
    Yes, for clarity I'm talking about wrapping the outside of the mast in the saloon, using some sort of closed-cell foam insulation as it goes through the top of the deck to the step on the sole.
    Geoff W.
    s/v "Delightful"
    1987 E32-3
    Hull #712

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