Head to Head Coverage = Happy Grass
to Head Coverage Explained
Head to head coverage is the manufacturer's
recommended way to design sprinkler systems. Basically, the
further along the spray you go, the less amount of water that covers the
ground. So if you just sprayed so that you got all the grass wet,
you'd have to over water in some areas just to get the bare minimum on
the other parts.
So essentially, head to head coverage means that
you'll install a few more heads up front, but you'll save water and
money every time you water your lawn.