Efflorescence - How to prevent it?


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Old 04-12-08, 10:05 AM
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Efflorescence - How to prevent it?

Anyone know how to prevent Efflorescence? Every winter my garage floor starts to show the white chalky substance. My guess it is because of the rains. Once the summer comes it dissappears. Anyone know how to prevent it from forming?
 
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Old 04-12-08, 01:34 PM
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Welcome to the forums!

As far as I know the only way to prevent efflorescence is to remove the moisture that causes it.
 
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Old 04-12-08, 07:51 PM
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Which in your case means breaking out the floor and repouring it with a moisture barrier underneath it.
 
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Old 04-13-08, 02:18 PM
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Is there anything I can put on the concrete to maybe slow the process?
 
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Old 04-13-08, 04:04 PM
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Efflorescence - How to prevent it?

Where do you live and what is the climate?

Sand tracked in can collect moisture and draw other salts out of the slab that become white when the moisture evaporates.

All too often, people do not bother to post their location on the site so intellegent answers become impossible. - Update your profile.
 
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Old 04-13-08, 08:09 PM
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controling the moisture under the slab is the only way to prevent it, you would need to either make water run away from your foundation edge, ie guttering with down spouts directing water well away, also sloping the soil away from the house, and probably also french drains around the foundation. or as was suggested the moisture barrier under the slab.
O'tools comentary on Murphy's law (Murphy was an optimist)
 
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Old 04-15-08, 10:34 AM
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I am in Sacramento, CA. So mild winters in the 40's and 50's with some rain, but not a lot. Summers around 100 degrees.
 
 

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