I am in PA, about 3 months in our new house. We were told that a basement closet did get some water during heavy rains (basement is about 1/2 finished). So we experimented with different options-- tried regrading. Came to the conclusion we would need to make some type of structural fix, so have talked to a few different waterproofers.
One, who took the time to explain everything to us, made a point to say alot of contractors will not even work with external drainage systems now, because they can not guarantee the work. Which I found interesting, because, as you pointed out abog, the "experts" say that is the best way.
Now I also learned, last night, during the heavy rains we had here in PA, we also have water in the opposite corner in the basement...there is a small bathroom off the laundry area.
My question(s) are: Looks like we are going with a sump pump in the closet, however, would this be extremely more difficult in the bathroom, because of the plumbing??
And, I believe the water in the bathroom can be attributed to the following-- In the rear of the house, off the porch steps, the sidewalk is about 1 foot from the house.The are between the house and walk was never cememnted, thus allowing for water to rolloff. WOuld cememnting this area prevent further water from entering, or only slow it down? THanks...and sorry this got so long!
I am by no means an expert however, the old adage that "an ounce of prevention is worth a pound of cure" seems to fit in this instance.
If water can be diverted away from the house by ensuring the natural grade is away from the house and that downspouts are draining 4 feet or more from the foundation you may very well solve your problem without the expense of the "professionals".