Can I install solid wood flooring over acoustic underlayment?
You cannot nail down solid wood flooring directly over and acoustic underlayment. When you nail through an underlayment and into the subfloor, the impact sound transmission travels through the nails into the subfloor resulting in a loss in the acoustical value of the underlayment. If you want to install solid wood flooring and use and acoustical underlayment, the best way to do it is install the acoustic underlayment under a floating subfloor. And then, install the solid hardwood flooring on the floating subfloor using the manufactures recommendations. The flooring height clearance should be taken into consideration.
