Could be the combination of moisture and installation method.

That is why you need to tape (duct tape) the underlayment, every piece of them.

所有跟帖： 

• got it. I will talk to the contractor. not sure if he is -meowi- ♀ (50 bytes) () 01/09/2012 postreply 15:52:11

• if he won't -越王劍- ♂ (88 bytes) () 01/09/2012 postreply 15:54:25

• good idea. but not want to hurt him.... -meowi- ♀ (0 bytes) () 01/09/2012 postreply 16:04:18

• 這不是善良。 -狼的傳人- ♂ (0 bytes) () 01/09/2012 postreply 17:03:43