It seems to work well enough raising the grade and laying about 4 feet of poly. There's been no water in the basement since. I've put some soil over the poly, any chance of anything growing there? Maybe river rocks? Right now the rain is sort of splattering the topsoil onto the house, so not working that well.
I've still got mould smell in the basement, but no leaks, i need to run the dehumidifier and heater down there every time it rains to try and kill off the mildue. I guess the humidity is coming through the concert wall that is since no finished outside above ground and the poly? Most people don't use eves droughts around here because of the ice in the winter.
I wonder if plastic plankton sheeting will keep the odour out of basement walls? I'm thinking it will make it harder to dry form the inside with the dehumidifier running. The basement is only 6 feet high, so i don't seem much point in finishing the floor and walls. I think better to just insulate the basement ceiling and keep the cold and odors out of the main house. I figure that typar sheeting just stapled to the joist then slide 5.5" insulation batts into the joists.
The neighbour has an excavation machine and saying he could dig up around the foundation for $600. I wonder if it would be worth it? The house is already on a high point, not sure how the drain would be installed, i guess back into the basement then to the drain. I would put the plankton plastic on the from the out side but i'm am worried that nails or screws would just damage the old concert anyway. Any ideas?