So long as the moisture levels have been tested by your flooring professional (not the 'guy' the GC makes install the floor) and the barrier has been proven to be intact, you are welcome to glue down the hardwood. It is still HIGHLY recommended that you use the BEST adhesive on the market...just in case.
The slab still needs to be LEVELED. The flatness of a freshly poured concrete is rarely good enough to put down a rigid floor (most pours are ready for carpet and that's about it). The subfloor preparation still needs to be dealt with. And again, this needs to be done by the wood flooring PROFESSIONAL that the GC HIRES to deal with this part of the project. Please do NOT let the GC give this job to a 'guy who swings a hammer'. This type of stuff needs to be dealt with by the specialists. Just like plumbing and electrical are dealt with by professionals, so too a flooring preparation and wood floor install need to be dealt with by specialists.
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Southampton hulk floors
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