Joined: July 2004
||Posted: 10 Nov. 2019,09:39
Is it a new stone for you? Some sandstones are far more porous that others and will draw in more of the doping oil which is the main cause of picture framing.
Joint-It isn't usually one of the worst offenders when it comes to Picture Framing, and when it does occur, it tends to weather out fairly quickly, whereas some other products use much thinner doping oils, which then penetrate further and deeper and can be harder to shift. Also, certain oils are more appealling to various forms of microscopic life-forms and so turn dark and establish themselves more firmly.
I'd suggest giving it a month and then review. Take photies now so that you can compare just before xmas rather than rely on memory. If you still think there is a problem then, give Gary in Milltown a call - he's normally very helpful in these matters.
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