#1 Your going to need 3/4, not 1/2" for the main supplys all the way to the fixtures then step it down to 1/2.
100' of 1/2 could do a whole house or 2.
Make sure the pipe has time to warm up then bend it backwards as you take it off the roll.
100' of 1/2 could do a whole house or 2.
Make sure the pipe has time to warm up then bend it backwards as you take it off the roll.