Shower pan shall be constructed without a seam and extend to a minimum height of how many inches on all vertical walls?

Shower pan shall be constructed without a seam and extend to a minimum height of how many inches on all vertical walls?

• A. Constructed without a seam and 6 inches
• B. Built with a seam and 6 inches
• C. Constructed without a seam and 4 inches
• D. Built with a seam and 8 inches

Answer: (A)

Shower areas are protected by a watertight base and waterproofing that goes up the walls to stop water from reaching the framing. A seam in the pan creates a potential leak path, so constructing the pan without a seam eliminates that weak point. Extending the waterproofing up the walls to a minimum of six inches provides a solid barrier against splashed or wicking water, guarding the wall cavity and framing behind the tile. Six inches is the standard minimum because it covers the typical splash zone and aligns with common practice and code expectations.

Shower areas are protected by a watertight base and waterproofing that goes up the walls to stop water from reaching the framing. A seam in the pan creates a potential leak path, so constructing the pan without a seam eliminates that weak point. Extending the waterproofing up the walls to a minimum of six inches provides a solid barrier against splashed or wicking water, guarding the wall cavity and framing behind the tile. Six inches is the standard minimum because it covers the typical splash zone and aligns with common practice and code expectations.