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Old 02-19-2009, 06:24 PM   #16
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Do I need to remove this?


Moisture plus cement does not equal mold.
Moisture plus cement plus food(dirt, wood, paper, gunk, etc.) equals mold.
Scuba seriously now...............you need to bring a why, how, and what to the table. Too many people do things because they heard it from somewhere else or just thought it was a good idea. I have had to take building classes from building inspectors on this issue. It was all back by science and testing over many years in the field. I won't argue just to argue. I've seen mold grow on a newly poured concrete wall so thick it looked like dandelion seeds, but then it all died because it ran out of food. If you can mitigate one or more of the 3 essentials, mold will not grow.

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Old 02-19-2009, 06:36 PM   #17
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Do I need to remove this?


I'm sorry, didn't realize you intended to create a clean room 1st

Quote:
Where Does Mold Come From?
Mold is everywhere indoors and out even in the cleanest homes. Mold can enter a home on clothing, shoes, pets, open doorways, windows, vents and through the heating and cooling system. They can exist in dust and can be carried through air and water. Mold can grow within 24-48 hours of landing on a damp, moist base that has food and oxygen available. It is nearly impossible to create an environment that is 100 % mold free.
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Old 02-20-2009, 06:56 AM   #18
Mold!! Let's kill it!
 
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Do I need to remove this?


Mold can always find a surface. What it needs is organic food (wood or paper will do fine). Moisture greater than 60% relative humidity and warm temperature (40-110 degrees will work for most common molds found on building materials). Eliminate any of the three and you won't have mold. Eliminating the food source and temperatures are impossible, so that leaves moisture control. Keep the organics below 60% RH and have no mold.

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