Hi all. I just bought a new (to me) house. It is 5.5 years old and built by a builder with an excellent reputation. It has a 10” poured foundation with French drains on both sides. There is no evidence of moisture anywhere on the walls or the floor of the basement - dry as a bone.

Well, I foolishly turned a small sprinkler on at 8am on Friday and realized at 3pm it was still on. Translated, while it was a small sprinkler, it was shooting water on my foundation for 7 hours in a very concentrated way. I realized there was an issue when I saw a small area of water on baswment floor. I immediately turned off water and by the next day the water was gone. I felt behind the blanket insulation on Friday and it was wet - not soaked, but wet. It wasn’t wet today.

The builder told me there’s nothing to worry about. The previous owner told me there has never been one drop of water in basement. I’m just worried about an all day rain or melting snow. But then I tell myself nothing in nature will replicate a sprinkler firing water at my siding and foundation for 7 hours.

Does anyone have any thoughts?