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Cleaning products for Pennsylvania Bluestone

We have a home in West Vancouver and have paved the patio with Pennsylvania Bluestone. It has discolored over the winter and we wonder how best to clean it.
 

Dear Les:

Discoloration of stone (if you want to report that it has become of a lighter color) can hardly be rectified with cleaning.

What you're reporting – id I guessed it right – is not quite usual with PA bluestone. Perhaps it was color-enhanced by the factory to make it appear more appealing and now the color-enhancer has faded.

Perhaps you had your stone sealed at the time o the installation, and the discoloration could be a consequence of that. (No stone should ever be sealed when installed outdoors.)

Hard to tell.

Your best bet is to get hold a reputable stone restoration contractor and consult with him.

May I ask you now to please read and e-sign our Statement of Purpose at: http://www.marblecleaning.org/purpose.htm?

Ciao and good luck,

Mauri zio Bertoli

 

www.marblecleaning.org – The Only Consumers' Portal to the Stone Industry Establishment!
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