Top Notch Home Inspectors are suspicious by nature, and this serves us well, especially when confronted with a tiled shower. The perfect example is the shower stall pictured on the right. At first glance it appears to be typical for its type and age. There often will be some minor grout deterioration and cracked tiles.  But wait, there’s a minor stain at the ceiling below. Did someone leave the curtain out? Or run the toilet over? Or given what we know about tiled showers, does the stain suggest we need to be considering more troublesome possibilities?