(2) Would homebuilders eventually demand evidence of such testing
from vendors to the experimental market? Or is it likely that the
average homebuilder would never become aware of the need for such
testing?


I was unaware vendors hadn't done such testing. If I were me and was going to
sell such a thing at the very least I'd test to destruction and have a second,
independent, party do testing as he sees fit.

Your idea is a good one. I have no idea what a reasonable cost would be, but
keep going.

Dan, U. S. Air Force, retired