January 19, 20179 yr Hey all Got this sussed for the walls and floors on my underground hobbit dwelling. Internal channel to take water to sump. Although I intend to have a waterproof roof I still worry about water ingress via the concrete ceiling (parking above it). All examples I see of placing the membrane on ceilings are in nice curved ceiling basements! ; mine of course is square! I can't just attempt to fix "as is" because I'm worried about sagging and hence leaks if any water did get in. Any other methods to "water drain" my ceiling???
January 19, 20179 yr Author It's been suggested I make a vaulted ceiling ! no good doing this in wood and it's been suggested not that easy . have to somehow get the dimpled membrane over it and linked into the wall membrane!!
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