We just bought a new house and had a flood due to power outage. We gutted the basement and decided to water proof it. Got a new sump pump with we'll put in and installed a French drain.
After installation of the French drain, I noticed that the concrete is slightly darker/discolored (due to dampness I'm guessing) between the old concrete and the new around the perimeter of the basement.
I talked to the company that installed it and they told me it's normal and not a problem as long as water is not coming through. This happens because the new concrete can't fully seal and stick to the new concrete and we may have slight discoloration.
This happens after heavy rain and so far had no issue with water coming through. Our new pump works great but still worried about the discoloration. Is this normal after a French drain installation? Will I have a problem in the future if I cover the concrete with carpet or something?
Tried to call the company to see if it's normal. Apparently it is since they pour new concrete around the perimeter of the basement and the new concrete doesn't fully stick to the old concrete. Dampness might come in through the gap.