How long do porcelain shower walls last?
When installed correctly over a waterproofed substrate, porcelain shower walls routinely last 25 to 30 years or more. The TCNA notes that porcelain's low absorption rate makes it inherently resistant to biological growth and chemical degradation. Grout joints, if present, are the most common maintenance point and typically need resealing every three to five years depending on water hardness. Homeowners in the Charlotte area deal with moderately hard water averaging 120–150 mg/L of calcium carbonate, which can accelerate grout wear slightly compared to softer-water markets.