Waterproofing a basement
I get water in my basement just about every spring and fall when the heavy rains hit. We have clay soil and my foundation was not installed with proper drainage. As a result, we get hydrostatic pressure build up against the walls (concrete block) and the water trickles in at several locations where there is even the slightest crack. It comes in through the walls and where the walls meet the footer. It isn't too bad but will puddle up and cover the floor if I don't wet/dry vac it up every couple of hours. I installed a sump pump but it is useless because there is no way for the water to reach it except for when it gets high enough to cover the floor.
Options I have heard about:
1. Dig up the foundation on the outside and put in the stone, drain tiles and pipe to get the water away from the walls. I really don't like this option as it is the most costly and would tear up all of our foundation plantings.
2. Dig a french drain around the perimeter of the basement floor and route the water to the sump pump. This isn't bas but it is still very expensive (~$10K). Also, there is a risk of the drain pipes eventually filling with silt over several years so it may not be permanent.
3. Cut a small trench (~2") around the perimeter of the basement floor to catch the water coming out of the water and route it to the sump pump. Not bad and I can clean it out after every event to make sure it remains clear. The only problem with this is the mess of doing it. Dust everywhere!
4. Install these plastic baseboard gutter thingies that were demonstrated on "This Old House". They epoxy down to the floor and against the wall to create a tall and narrow "gutter" with the floor and wall that then is routed to the sump pump. It should be the cleanest and cheapest method. One issue is that our floor was painted with some useless waterproofing junk that will have to be stripped off first. That is still less messy than cutting into the floor. The other issue is that any water that finds its way onto the center of the floor will not be channelled to the sump pump. I can still leave most of the sump pump hole accessible to the inside of the floor, however, in case there is a major water problem in our basement like the water holding tank for our well suddenly leaking out at high pressure or our septic tank backing up, etc. But, for now, I don't think we are getting ground water in through any part of the floor.
Any comments on these options or other suggestions?