concrete garage floor white powder
Concrete efflorescence is a very common problem on concrete, especially decorative concrete. when moisture and water vapor migrate to the surface of hardened concrete floors, walls, and colored concrete, it carries with it calcium hydroxide.. We purchased a new home in sacramento california 6 1/2 years ago. we have had a constant issue with our garage floor having an abundant amount of thick white powder substance.. When the salt water evaporates it leaves a white powder called efflorescence. this is a very common occurrence. especially in northern climates where a great deal of salt and sand mixtures are used to keep the roads from becoming too icy. many people wonder what this white powder on my concrete garage floor is..
concrete garage floor white powder
If you pour a quarter cup of water on your garage floor, it should disappear in about half a minute. if your garage floor is sealed, the water will eventually evaporate. concrete floors can’t be sealed from the underside. that’s why there should be a moisture barrier between the soil and the floor.. Joe nasvik an example of extreme efflorescence. the concrete was placed, colored, and stamped shortly before winter. the extended period of water movement through the concrete to the surface brought chemicals to the surface where they combined with carbon dioxide from the air to produce calcium carbonate, the white chemical you see in this photo..
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