I have 60 year old house. I want to finish the basement to use as living space.
The basement walls are concrete blocks which have been painted with dryloc. The gutters have been checked and the downspouts direct water at least 10 feet from the house into a drywell. I still get water inside the basement where the back wall meets the floor. Part of that wall has an 8 foot extension to the house build over it so no rain ever reaches that area. My contractor broke the floor near that wall and said it is only 1/2 inch thick concrete. He recommends breacking the floor all around the back of the house, putting gravel in the trench then a pipe to a sump pump.
1. Is the thin floor going to be a problem?
2. Is that (expensive) trench system the correct was to dry my basement?
3. Is there a web page that shows in detail exactly how he is supposed to do this trench system - I want to be sure, if I spend all this money it is being done correct, not wasting my time and money.
I have had several contractors give me estimates. It seems every contractor that comes into my house tries to sell what they do - not necessarily what I need - at costs ranging from $3000 all the way to $35,000.