From Lizzie's article To flush or not to flush, on the main SUK site:
....I will put two heavy gauge trash bags, one inside the other over my hand and arm and shove them as far as I can into the s bend at the bottom of the toilet bowl. The bags will be pressed to the sides of the toilet bowl and starting as low down as I can I will fill them with expanding foam like that used to fill gaps around pipes. I will work backwards, stopping four inches down from the top of the bowl. When it has settled and set anything above the bowl will be trimmed off, the remainder of the bags folded over the top and it will be duct taped into place. The seat and lid will be closed and that will also be sealed with duct tape....
This doesn't cover the issue of explosive gasses completely. You've identified something I hadn't considered, and its important. Maybe the best bet would be to pour a bag of cement into the remaining water in the U bend, letting it set and hoping that would seal out gasses.
Exploding sewer gas is humorous to consider, but extremely dangerous. I once saw a 3ft diameter x 8" deep cast iron Man hole cover be blasted 50 feet in the air by such an explosion. It was on the Euston road in London. Amazingly no-one got injured.
A spare bag of cement is certainly going on my shopping list sometime soon!
Thanks GR good post.
(8 March 2013, 10:55)Geordie_Rob Wrote: I'm planning on composting toilets as well. Already got the wine fermenting buckets, spare loo seats & timber ready to go. These toilets make the most sense IMO.
DITTO
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