I have a 10 year old townhouse and it has a concrete slab foundation. The part of the exposed foundation from the siding to the ground is crumbling pretty badly I think. I also have a crack in my driveway concrete that goes from side to side, my driveway is a hill, I do not know if this makes a difference or not. How can I repair these myself? The picture that looks wet is because it is right under the back faucet on the patio and I cleaned the patio using water today, it is not normally we like that.