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p_mags

stains made from concrete

p.mags
14 years ago

Hi I am building a dek with garapa decking. On the deck is a table made of white concrete.Everything looked great until

the first rain.The garapa turned greenish black where the water dripped from the concrete onto the deck. We are still building and have not sealed the conc. or the deck. any ideas why this happen and how to remove the stains?

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