A greenish stain is appearing on cast stone. What can I do to remove these stains and prevent future stains?
The picture below illustrates an example of rust and copper stains on cast stone. The green stain in the picture below appears to be copper stain and the brown stain appears to be rust stain.

The cast stone should be cleaned with PROSOCO SURE KLEAN 800 Stain Remover as per the manufacturer's recommendation.

To minimize further staining, seal with either PROSOCO's Weather Seal Siloxane PD or, for extremely porous surfaces, Custom Masonry Sealer .

Always test the solution on a test panel.

PROSOCO offers a full line of masonry cleaners.

Contact them at www.prosoco.com or 800-255-4255.

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