I am remodeling my house and have drywall off walls. I have new copper comming into house from the main then 1 ft. up into pex. The main is very noisy, what would you recomend to quiet it down before I drywall. Also I am installing a Bosch 2400 gas tankless and I have heard they do make some noise so what can I use to insulate the noise, again the drywall is off now. Thanks, Tim