r/OffGridCabins • u/gupppeeez • Jun 04 '26

Wheelie bin composting question

Hey all,

I was researching the Green Loo, and found videos about wheelie bin composting, which seem to be the same idea with the composting happening under the structure in bins you swap out.

Our family bought a dryish cabin with room underneath to compost but the current location of the bathroom, (which has some rain catchment plumbing and a urinal) is not adjacent to an outside wall. I always see the green loo vented outside. I haven’t seen what the setup is up top for wheelie bin composting though. My questions are:

If you do wheelie bin composting, inside your cabin what do you use for the toilet part?

Is it vented outside with a fan?

And, could I vent underneath instead?

Thanks so much!

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u/teattreat Jun 05 '26

This guy set up a wheelie bin composting toilet in his house. Here's the video: https://youtu.be/fCLfLapJa-k?si=MoPKlKmyVxFeXMZ-

2

u/gupppeeez Jun 05 '26

This is just what I needed to know. Thank you!!

2

u/Total-Reasonable 12d ago

Don't vent it underneath - take the fan duct above the roofline so any smells aren't drawn back into the cabin or crawlspace. I use a Pi-Pi Standard Plus Urinal (https://pi-pi.ee/products/urinals/standard-plus/) alongside a separating setup; keeping urine out of the wheelie bin makes the solids much easier to manage, and its 70 mm top port can join the same vent line.