几何尺寸与公差论坛

 找回密码
 注册
查看: 435|回复: 0

osb floor sheathing

[复制链接]
发表于 2009-9-15 10:52:54 | 显示全部楼层 |阅读模式
osb floor sheathing
does anyone have experience with the use of osb floor sheathing, which was wet during construction due to a storm. the osb will be topped with gypcrete. is there any literature out there to determine if the wet osb is still acceptable?
thanks
be carefull of osb sheathing strength loss from prolonged wetting.   damage due to differential swelling can reduce the sheathing strength.  many of the new t&g flooing products have special edge sealing coatings.
this is the link to the plywood association, who should be quite familiar with your problem.
i've seen it used in the same situation.  the osb board curled and flaked as it dried out.  some areas were bad enough that an underlayment sheet was the only solution, in other areas a 1" gypcrete topping worked.  
osb may have its' uses, but i don't like it any where near moisture, which is almost everywhere imho.
osb comes in several forms.  if it is exposure rated sheathing, it should be fine for limited exposure.  prolonged (apa won't tell you how long!) exposure can result in deterioration.
i've done failure investigations on osb and have found that moisture getting into the edges causes the most damage.  edge swelling can be as much as 15 to 20% with only a few exposures to rain/wetting.
see link at:
have you looked at avantec its a osb type sub-flooring
i have seen it exposed to weather and rain over months of time and stands up as good as original.
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|小黑屋|几何尺寸与公差论坛

GMT+8, 2025-1-18 15:29 , Processed in 0.034321 second(s), 19 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2023 Discuz! Team.

快速回复 返回顶部 返回列表