I purchased Morning Star strand bamboo in May 2012, had it installed (glued to slab) by an LL installer. The installer took every precaution to make sure the installation was by the book. In his words, he had "been burned" by LL before. A month and $15,000 later, the entire floor was cupping!. After notifying LL, they sent out an inspector from Inspect Solutions'. They may as well have sent out the CEO of LL, his primary job was to create a report that linked everyone except LL to the cause of the problem!. The report came back as installer error and what they call "site-related concerns" (which means its my problem and they ain't covering it)/. After much deliberation, they have decided, that it was all my problem.. Apparently, my slab with a 4% moisture content pre-installation and a 4% moisture content upon inspection has a "very high moisture vapor transmission" even though the installer used the recommended glue/vapor barrier!.
It is amazing to me that they can actually say these things with a straight face?. Hmmm, I wonder why an inspector hired by LL would create a report with such BS to clear LL of any wrong doing:.
Apparently, it is well known to the wood floor-laying community that strand bamboo is more prone to cupping...