But why glue a hardwood down? Does he not have a stapler for this engineered floor?
I asked him about nailing/stapling and he said he wouldn't do that for 1/2" planks due to splitting of the tongue. I was leaning towards stapling and it sounds like this is appropriate for 1/2", so I don't understand that one. Seems like he really prefers glue.
Is he a licensed contractor or a handyman? Who is warrantying the floor, the manufacturer is 7 years, but what about the installation/labor warranty?
He is a licensed general contractor, but specializes in hardwood. The manufacturer's warranty is 15 year wear/30 year structural. He is warrantying his installation for 7 years.
So you're recommending nailing/glueing of plywood and staple installation of flooring? What thickness of plywood? I'd like to keep it as thin as possible. Should I still do the 15# roofing felt/rosin paper on top of plywood?