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  1. #1
    Join Date
    May 2012
    Location
    Wellington
    Posts
    438

    Default Cleaning Hinuera Stone ?

    Does anyone have any experience with this ? I read on Google that the surface should be sealed every 7 or 8 years; my Mother in Law hasn't done this in the 40 years or so since she had the place built and it is now gathering black/grey patches on the north (sunny) sides.

    On the south side randomly pink patches come and go but seem to be less of an issue as are more seasonal.

    Any help appreciated to save going down the wrong track; might even look at sealing it once we can get it clean !!

  2. #2
    Join Date
    Jun 2004
    Posts
    9,607

    Default

    The pink patches are probably mould or something.
    Try 30 seconds or similar.
    Leave for a while, waterblast (not to hard as it is a soft stone) then repeat until clean.


 

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