Here we see the initial stages
of the plumbing going in. The picture to the right shows round bundles which is
the type of fresh water lines installed by Arbor Custom Homes. This style of
tubing is called PEX which is a high density polyethylene. This water
system has many advantages over the old CPVC or even copper and galvanized piping.
These materials are flexible and require fewer connections. Connections are
typically where water lines will leak. They also weaken the lines and
can create drops in pressure. The PEX connections do not require glues, so
there is less toxicity in the system. The PEX material can also better withstand
freezing weather. As it thaws, it will contract back to its original condition
without damaging its structural integrity.
You can see the different sizes of the supply lines weaving through the floor
joists. The size depends on the source location.
Notice
how the PEX bends nicely, eliminating 90 degree angles, unnecessary connections
and creating a smoother flow. The freshwater lines are held up high
against the floor trusses so that they will be kept tucked into the floor
insulation that goes in later. The black pipes are for waste water to exit the home.