I ended up using those cheap plastic key tags you can write on. Not pretty, but at least they stay put.
Those key tags are underrated. I’ve seen folks try fancy label makers, but the tags just work. One thing I’d add—snap a quick photo of your notes and sketches every now and then. Phones don’t get waterlogged as easily as paper in a crawlspace... learned that the hard way.
Label makers look nice, but I’ve had the adhesive peel off in damp spots or just get grimy over time. Those plastic tags are ugly, sure, but they’re tough to beat for durability. I do something similar with my shutoff valves—write the zone or fixture on a tag, then zip-tie it right to the pipe. No guessing when you’re in a hurry.
Taking photos is a solid backup. I’d add one more step: every time I open up a wall or crawlspace, I’ll snap a wide shot before closing things up. That way, if I ever need to trace a line or remember where a junction is, I’ve got a visual record. It’s saved me from tearing into drywall more than once.
One thing that’s helped me is keeping a running “plumbing map” in my phone’s notes app. Nothing fancy—just a quick sketch with arrows and labels, updated whenever I make changes. If you’re not into digital stuff, even taping a laminated copy near your main shutoff can be handy for guests or family.
I know some folks swear by color-coded tape for hot/cold lines or supply/drain, but honestly, it gets confusing if you don’t keep it consistent everywhere. The tags and photos have been way more reliable for me.
Last tip: if you’re labeling anything outside (like irrigation valves), go with UV-resistant tags or markers. Learned that lesson after my “Zone 3” faded to nothing in one summer...
I get the appeal of tags and photos, but I’ve actually had better luck with color-coded tape—at least for basic stuff like hot/cold or supply/drain. The trick is to pick a simple scheme and stick with it everywhere, even if it means redoing a few old labels. It’s not perfect, but for me, a quick glance at red or blue tape saves hunting for tiny writing on a tag (especially when I’m crawling around in a tight spot). For outdoor stuff, though, yeah—UV-resistant tags are definitely worth the extra couple bucks. Regular Sharpie fades way too fast in the sun.
I get the color tape thing—definitely makes life easier in a crawlspace. But I’ve run into jobs where the tape system got confusing over time, especially if someone else came in and used a different color scheme or just slapped on whatever was handy. I still lean toward engraved tags for anything that might need to be identified years down the line. They’re not as quick at a glance, but there’s less chance of misreading something if the tape peels or fades. Maybe it’s just old habits, but I’ve seen too many “blue means hot” situations to trust tape alone.
Totally get where you’re coming from with the tape confusion. I’ve had to trace lines in my own basement after a previous owner used green for both hot and cold—guess they ran out of red? It’s a pain when you’re trying to fix something in a hurry.
- Engraved tags are definitely more permanent. I started using those little metal ones with zip ties for anything important, like main shutoffs or weird junctions.
- For less critical stuff, I still use tape, but I write on it with a Sharpie. Not perfect, but at least there’s a label if the color coding gets messed up.
- One thing that helped me: I took photos of everything after labeling and stuck them in a folder on my phone. Saved me more than once when I forgot what went where.
Old habits aren’t always bad—sometimes they’re just what keeps things from turning into a guessing game years down the line.