Re: Before serious basement waterproofing...
Probably the first thing you might want to do is tear out all this drywall and possibly framing since it's gotten wet. You will need to investigate if there are any cracks or holes in this area that may be he source of the moisture infiltration that will need repairing.
There are three area in the basement that gets a little wet when it rains or when the snow melts. One area happens to be finished drywall, and the wall has big watermarks and is breaking down
Also this give you a chance to dry things out and clean any mold.
These three area is right under the old drain system that used to be hooked to the gutter downspout, that are not in use currently
Check outside to ensure those are completely sealed .
While repairing and water proofing from the exterior is the best method you can ensure the grade around the house runs away from the foundation......As well as the downspouts.
Is there any obvious I can do before the considering more expensive option (digging exterior to seal the cracks, installing drain system in the basement etc).
If you considering the product bought off the shelf to be painted on .... this is not water proofing your walls..... in my opinion this is only a bandaid and a waste of money ... in my opinion.
3) Water proof coating on the interior wall
Unfortunately there is no easy or cheap way of repairing water problems in your basement .... certainly not by a paint on product .... the best way is to do it right.
Just a thought.
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