RV Tech Tips: Dirty Water Down the Drain

rv tech tips dirty water

RV Tech Tips — dirty water down the drain.

When cleaning and treating our RV’s roof, I work on 3-foot-square sections at a time. To be able to rinse the wash pads with a freshwater hose while keeping the sides of the motorhome clean from dirty water (which can leave behind streaks), I put together a wash tub with a drain hose over the side to bring the dirty water down to ground level.

I drilled a hole near the bottom of one side of a plastic tub and applied silicone caulk on a 3⁄4-inch male hose thread (MHT) by 1⁄2-inch MPT garden hose adapter held together with a 1⁄2-inch galvanized hex lock nut. After the silicone dried, I attached the garden drain hose. Just be sure to secure the freshwater hose so it stays on the roof.

RV Tech Tips — Find all the RV cleaning accessories you’ll ever need at Camping World.

Have you come across a clever solution to a vexing RV-related problem? Send your Tech Tips to [email protected].

Joe Miklosi, Livingston, Texas

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  1. Anonymous

    I love that idea and plan on making my own. It’s such a hassle when washing a roof. Thank you for the idea.

  2. Anonymous

    Great idea. I was using a car wash brush, it made quick work of washing the roof, but dirty water would then run down the sides and I would have to wash the whole trailer after washing the roof.

  3. Anonymous

    Oh great. Now my wife will be after me to wash the roof on our RV. Thanks for nothing!

  4. Anonymous

    Both my husband and I read this and can’t figure out how it works. There needs to be a video.