flagstone rust

We recently had a driveway redone with flagstone borders. When it rains or the driveway gets wet, the flagstone (especially those that are red or have red streaks) tend to bleed what appears to be rust. It stains the other colored flagstone and the concrete. How can this be prevented?

The contractor tried using muriatic acid to clean it and then tried sealing the flagstone with lacquer but it still happens.

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flagstone rust

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leaking flagstone
by: David

It sounds like you have flagstone that tends to "leak" when it gets wet. There's nothing you can do about that until it stops bleeding

Don't use muriatic acid to clean it, because you could easily burn the stone. Instead use a cleaner called 600 Detergent from Prosoco.

Also, don't put lacquer on your stone. That's going to cause efflorescence.

After you clean the stone, seal it with a solution called Siloxane which also comes from Prosoco.

You can call them at 1-800-255-4255 and they'll be able to tell you where you can get their products.

Great luck!

David

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