Triple Washer Drain Setup Installed in a Garage Conversion

Sometimes a garage is just a garage - until it isn't. This customer needed their space converted into a functional workspace for their in-home business, and that meant getting the plumbing right from the ground up. No shortcuts, no guessing. Just a clean, reliable setup built to handle real daily use.

We installed three washer drain stations along the garage wall, each with its own standpipe, P-trap, and dedicated hot and cold supply valves. The supply lines run insulated across the wall to keep temps consistent and protect the pipes long-term. Everything ties into a single shared drain line that runs level and properly supported off the floor on metal standoffs. It's the kind of setup that just works - day in, day out.

What makes this type of work tricky is the planning. You've got to think about drain slope, venting, supply pressure, and how it all ties back into the home's existing plumbing. Get any one of those wrong and you're looking at slow drains, backflow problems, or water hammer. We mapped it all out before a single pipe was cut.

This falls squarely in our residential service plumbing wheelhouse. Whether someone is adding a utility sink, setting up laundry in a new space, or getting a workspace ready for business use, the approach is the same - measure twice, pipe once, and don't leave until it's right. A garage can become a lot of things with the right infrastructure behind it.