The photo on the left is an example of a shower stall with an ongoing mold problem. The most bottom section of tile is a mere 2″ strip with thick grout lines on either side. The bacteria was growing in the grout and behind the tile. After installing bullnose tiles over the surface, moisture is no longer able to infiltrate the lower section as easily.
Read the full pdf here: bullnose 2.
Shower stalls have a tendency to get moldy quite rapidly- especially in poorly ventilated bathrooms. This one was a wreckasaurus when I began the job, but once it was finished, it was finely polished and well sealed.
The photo on the right contains a section of bullnose tile glued on top of the original tile. The grout joints were thin which will help to reduce moisture buildup in the future.
To see the full pdf click here: Bullnose Tile on top of Existing Tile