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Eureka, CA
Posts: 444
Joined: Jun, 2009
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Crystal Lake, IL
Posts: 1174
Joined: Sep, 2003
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 Garage wall stain
[#2] Posted: 02/29/2012 - 11:34:11 AM |  |  |
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Looks like fungus
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Collins, NY
Posts: 3138
Joined: Apr, 2008
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Garage wall stain
[#3] Posted: 02/29/2012 - 12:53:16 PM | | |
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Salts. It's essentially the same as efflorescence, the siding gets wet when it rains, the paint prevents it from drying to the exterior, so it dries in and leaves behind anything dissolved in the water.
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Tom
http://clearcreekhomeinspection.com/
Life is tough enough as it is, it's tougher when your stupid. Don't do stupid things.
Dr Joe Lstiburek |
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Victoria, British Columbia
Posts: 2390
Joined: Nov, 2009
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Garage wall stain
[#4] Posted: 02/29/2012 - 1:15:46 PM | | |
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What causes it? Moisture. 
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Eureka, CA
Posts: 444
Joined: Jun, 2009
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Garage wall stain
[#5] Posted: 02/29/2012 - 1:19:08 PM | | |
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Yep, the outside was painted. Thanks for the info all.
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| Denny Waters |
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