We are remodeling a 130 year old three story farm house and have gutted the floors for new electic and plumbing. The plumber thinks 1/2 copper is plenty of size, but I can’t help to think that 1/2 will give more pressure and volume as the pipes have to run from basement to 3rd floor (four floors). Any input? Thanks!
run 3/4 trunk lines reduce to 1/2 for the supply line. if you have 3 floors 1/2 will not give the volume of water you will need, if you have a draw on a lower floor. Rodney at the warm floor center http://www.eosinc.com/import-tile