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vapor barrier transmission rate
i am looking for a reference either by an organization or a maunfacturer that states what the vapor transmission rate (perms) is for a 6 mil reinforced polyethylene sheet. the only one i have been able to find is for unreinforced in astm and i need to know if the reinforcing makes a difference in vapor transmission rate.
thanks
find a job or post a job opening
a good reference is a book called building science for a cold climate published by national research council of canada. the si perm value for 6 mil polyethylene is 0.0522 (dry cup) perms in ng/(pa*s*m)
jw

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2009-09-16, 06:06 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	vapor barrier transmission rate vapor barrier transmission rate i am looking for a reference either by an organization or a maunfacturer that states what the vapor transmission rate (perms) is for a 6 mil reinforced polyethylene sheet. the only one i have been able to find is for unreinforced in astm and i need to know if the reinforcing makes a difference in vapor transmission rate. thanks find a job or post a job opening a good reference is a book called building science for a cold climate published by national research council of canada. the si perm value for 6 mil polyethylene is 0.0522 (dry cup) perms in ng/(pasm) jw __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]