Latest Discussions : Basement & Foundation


05:30PM | 12/07/06
Member Since: 12/06/06
1 lifetime posts
built a new home....i have vents on one end and one side.cant put vent on front beacause of full lenghth concrete porch and garage on one end...everywere there isnt a vent it is dryand were there is a vent i have condensation.i have not put down a vapor barrier on the dirt floor yet but i am going to this problem seems to be occuring were my warm air made by my heat and air system is being put out....this problem didnt occur until the temps outside started to falling...any suggestions as to what course of correction needs to be taken..and will the vapor bearier help me out thinking that the warm air and cold air colliding over the damp ground is causing excessive i on the right track...thanks


04:41AM | 12/08/06
Member Since: 03/03/05
271 lifetime posts
My 3 cents on the matter. Vapor barriers are good, but if you do install on, it should be installed to act as a membrane. This means that the edges of the barrier need to be secure and air tight. This is why. If you place a vapor barrier on the soil, the moisture will collect under the barrier. Since there is no air flow, the moisture will just stay there. Now you have created the perfect breeding ground for bacteria/mold. The mold will produce spores and these airborn spores will look for any opening in the barrier to escape. This is not the case in ever situation, you may not develope mold.....but I have seen this happen on several occasions.

So, if you make a barrier, make it air tight.

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