Are plumbing manifolds in new residential construction becoming the norm or future? My builder in Louisville, KY uses PEX but has not moved to manifold distribution. Thoughts.
Like any type of question on here, the answer is, "It Depends". Do you want to have manifolds? Do you know why would may or may not want them? If you tell the architect that you want to have them installed in all areas, then they will be. Did you specify the size of pipe that comes from the street into the house? Have you specified the size of all the feeders to each device? I buried 2" copper from the street into the house, 1" copper for all manifolds and feeders, then down to 3/4" from the manifolds in each room over to the device. Are you putting in filters, lights, back-flow preventers, pressure regulator, basket strainer, etc...? If not, why?
I would never use Pex on anything. It has not been in use nearly long enough to be proven. Anything that is made from a petroleum by-product, and then you use it in the consumption by a human, cannot be healthy. I used copper in my home. It is been around for centuries, and it adds no bad taste or harmful material into the water.
I installed them in my house, so that I would be able to turn off any one side of any one single device from a single location. I also created manifolds in each of the bathrooms and kitchens. This way there would always be an even pressure on all devices. Plus again, from that point I can turn off any on side, of any one single device in that particular room, with disturbing anything else in the house.
Handy Andy In Mt Airy NC