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Homeowner Forum / Construction / May 2005Why do cement bags have holes
small ones everywhere. what do they do? g adds. MONEY , what a concept My stab: Allows moisture to escape. The bags are 3 layers: paper, plastic, paper. If moisture condenses on the plastic layer and can't escape it will soak the outer layer. Reminds me of when they did that to Tyvek when it was "discovered" that it was acting as a vapor barrier on the wrong side of the wall (in the north). > small ones everywhere. what do they do? >> > g adds. > MONEY , what a concept The holes are there for air to flow through. Mostly for manufacturing purposes. Concrete is dry so you wouldn't want water to be able to soak from the outside! > small ones everywhere. what do they do? > > > g adds. > MONEY , what a concept |
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