Bricks, Masonry, Asphalt and Concrete - Removal of stains on concrete tiles

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mferrier
02-10-08, 04:50 PM
We have several terraces of pale concrete tiles that are often subjected to various bird and bat excrement. I have tried removing stains with outdoor cleaner (bleech based) and industry strenght tile cleaner with some success but I have not been able to completely remove all traces of the stain. Appreciate your advice.

OldGuitarDude
02-10-08, 05:05 PM
I cut myself a few years ago pretty badly and our patio was stained. I was watching Forensic Files and they said Muriatic Acid would clean the concrete. I got some from a local chemical supply house (you can order it online, I believe) and it took the stains out completely.
Tscarborough
02-10-08, 06:28 PM
Muriatic acid does not remove stains. It removes the surface, taking the stains with it.

Pecos
02-10-08, 08:04 PM
Not only that, but you can get it at almost any hardware store/home center.