Arizona flagstone turned yellow

by Jamis MacNiven
(Woodside CA)

I set a huge fireplace (22" across) and used buff Arizona flagstone cut in hot dog sized pieces and veneer set them with a dry stone look. I used muriatic acid to wash the excess mortar and now I have a yellow effervescence on the surface. When wet it disappears. I pressure washed but it comes back. Ideas? Help.

Comments for Arizona flagstone turned yellow

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stain away NEW
by: Anonymous

I would try sealer with color enhancer.

yellowing flagstone NEW
by: Anonymous

Muriatic acid will yellow many materials when used as a cleaner. It's not too friendly. You might try DuraSheen from Prosoco. This will give you the "wet look". It will also act as a water repellant.

Before you use the durasheen you might want to use a light duty concrete cleaner.

Calcasieu Stone

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