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Thread: sanding a deck

  1. #1
    Join Date
    Jan 2011
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    Default sanding a deck

    I have a covered deck about 30 boards wide and each board is 80mm wide. All have been treated with Sikkens HLS then Sikkens top coat for decks. The overall affect is a deep shiny brown with the exception of the first 6 boards which get a lot of rain and full morning sun. These first 6 boards have spotted and in parts have turned a golden colour and I assume that is the resin coming out of the top coat. I need to sand it back.Can anyone tell me which sander is best to do this.
    Lee

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  3. #2
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    Default

    I would recommend either a Belt sander or a 125mm orbital,.

    I think the belt sander will have some issues with belts clogging, due to the varnish, with the Orbital, I have an Ozito with a 400Watt motor which can strip back paint fairly fast, so any sander should have at least 400Watts, the smaller 130Watt units will bog down very quickly.

    As for Abrasive paper, use a NO-FIL(sterated )paper to minimize clogging, this is available starting at 40# through to 400#,

    I would start at 60# to remove the top layer of varnish, then go to 80# and finish at 120#, any finer will be gilding the Lilly.


    jeff
    vk4

  4. #3
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    I'm not sure this is the answer you are looking for, but some years ago I had to clean up a load of picnic tables and attached benches. I tried sanding them it took ages and an awful lot of sanding belts.

    Then quite by chance I hit upon using a pressure washer with a fan spray. It ripped the dirt and grime out in seconds, then when it was dry, a quick run over with the belt sander to remove the raised grain and the job was done.

    Might be worth a try in a corner.
    Dragonfly
    No-one suspects the dragonfly!

  5. #4
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    Quote Originally Posted by dr4g0nfly View Post
    I'm not sure this is the answer you are looking for, but some years ago I had to clean up a load of picnic tables and attached benches. I tried sanding them it took ages and an awful lot of sanding belts.

    Then quite by chance I hit upon using a pressure washer with a fan spray. It ripped the dirt and grime out in seconds, then when it was dry, a quick run over with the belt sander to remove the raised grain and the job was done.

    Might be worth a try in a corner.
    Plus 1 for the D/fly works a treat

    Steve

  6. #5
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    That's what makes these forums so special. All the different experience that can be bought to bear on a problem.

    Glad to of helped, glad it worked (hope you tried the corner idea first!)
    Dragonfly
    No-one suspects the dragonfly!

  7. #6
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    Mansfield Qld
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    Default

    Thanks for the reply. What you say makes sense. I will give it a go. I have been able to borrow a belt sand and also an Orbital (circular) sander and picked up the no-fill at Bunnings. Will let you know how I go.

  8. #7
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    I did us the gurni water pressure spray when I was doing a cleanup after the first attempt at sanding back with my Ozito 280 watt and it worked to an extent. I will see how a heavier sander and the right paper works. I will use the gurni after the wash anyway so will see what happens. In any case, I will certainly give it a go in the corners.
    Many thanks for the reply.

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