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Rick
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Posts:157
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| 06/28/2001 10:46 AM |
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Just a few more comments on the subject brought up by mswilke: A few things to consider- offgassing by EPS products are very minimal, although in an enclosed enviroment like an ICF home they would tend to be intensified. Mark's post copying Jerry Harber's info on ventilation was very informative. One thing to point out: Eps is required to be covered in all living areas of the home. In most cases by a gypsum board. The gypsum board is then covered with with joint compounds, then by a primer/sealer, then by additional layers of paint. In a home properly finished, these present a very effective layer preventing the passing of any off gassing from the wall cavity to the interior of the home. Of course, anywhere there are penetrations for utilities, these will provide a route. Also, the likelihood of a large amount of EPS " dust" being present is low, I would say no more or less likely than leftover wood dust being present from interior framing and finishes. And bear in mind, wood dust is extremely flammable also. I am not trying to downplay the concerns mswilke has brought forth, I am saying that I believe the concerns are probably on the same level as those of using other buidling products that we know produce some side effects but are within acceptable building practices.
Comments anyone? |
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markross
Registered Users
Posts:1035
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| 06/28/2001 1:41 PM |
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Rick:
Gypsum board covers only masks the total off gassing, it is not a barrier. It will slow down the curing process of the block, but it will still enter the building. Without proper ventilation there could be a concern, although I doubt it.
Mark Ross
"Le Canuck" |
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Rick
Registered Users
Posts:157
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| 06/28/2001 3:25 PM |
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Agreed, not a total barrier, and certainly not the gypsum board by itself. Still, the amount of off-gassing is minimal, as the EPS in its FINAL state is virtually inert, if left to its own devices! It will depend on how "fresh" your product is coming form the factory. Less than thirty days and certainly there will be slight change, but this is mostly loss of water vapor. Please correct me if I'm wrong.
Cheers
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Ian ICF Builders
Registered Users
Posts:612
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| 06/30/2001 5:39 PM |
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| Hey Rick, Mark: Perhaps before you make statements about what you think is right or what you believe to be fact, then close with the statement "correct me if I am wrong" why don't you do the research first, or ask someone else to make the post that really knows..... The posts such as yours are the ones that leave much in question....not only the issue of discussion, but just how much do you or don't you know about this stuff? I believe you realize that whatever you post on this forum will be used as "fact" either by the unwary consumer that thinks you know all there is to know, or by the meek ICF installer that believes everything you post... Perhaps you ought to consider posting replies to subjects that you are sure of the possibilities of the recommendations or answers you post instead of posting replies to every question. Forgive me if I appear crass, but what you say here is repeated.... Please do the industry a little good every once in a while instead of trying to come across as all knowing of all issues....especially when you aren't sure. |
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Rick
Registered Users
Posts:157
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| 07/02/2001 12:01 PM |
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| Ian, my dear, this is exactly why I asked "correct me if I'm wrong", for my own benefit as well as that of others who read this. If I knew it all, I wouldn't need to be on this forum. And posts that create more questions promotes more discussion, so that qualified Pro's like yourself Ian, can help educate the rest of us. Its a good thing. I do see your point, though, and your thoughts and concerns are appreciated. |
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markross
Registered Users
Posts:1035
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| 07/08/2001 1:07 PM |
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Ian:
Did you have something to add to Ricks question? I understand that I am not the industry expert, hench I spoke with Tom prior to posting. I understand your point on research, and I believe you have an answer to this question, however you did not include it in your critisism of our replys.
Mark Ross
"Le Canuck" |
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Rick
Registered Users
Posts:157
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| 07/09/2001 12:57 PM |
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I would suggest that checking out panelwright's post in the Professionals section would be prudent. His information regarding the behaviour of EPS from the manufacturing process to finished product basically underlines my statements starting this thread. Thanks!
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