Ttomtom79 2020-08-01 09:57:58#1 There is no need for anything to be uphill. You are right, water has the property of always being at the same level, so what prevents it from flowing off is either a clogged vent or dirt.
There is no need for anything to be uphill. You are right, water has the property of always being at the same level, so what prevents it from flowing off is either a clogged vent or dirt.