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Patina reversal

Yesterday we applied a blue patina product to our roof and now find that it has gotten BLUER overnight and seems to be continuing. We now find that it is too blue for our taste. How can we tone down the color or reverse the process?

Chris Ball
homeowner - Bloomington, Indiana, USA
2004

You can try 1-5% salt solution (first test it on small area).

Good luck!

Goran Budija
- Cerovski vrh Croatia
2004

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