Can roof or window leak when it's not raining?
I have an intermittent puddle of water that appears under my bathroom vanity, which is under a (new) window, and also where a hot water PVC pipe runs. I can't find any correlation between the puddling and rain, use of sink, or use of heat. Before I rip out the vanity or tile, is there a way to rule out a window and roof leak? Thanks