Building a shower base starts with structure, slope, waterproofing, and drain alignment. The base must direct water efficiently to the drain before tile or finish materials are installed. Several installation references state that the shower subbase or liner should be sloped at 1/4 inch per foot toward the drain, and the finished threshold should stand at least 2 inches above the drain level to support proper drainage and code-compliant receptor construction.
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2026-04-27