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Showers & Walls
Guides about the shower itself — walk-in showers, tub-to-shower conversions, the Infinity Wall System, waterproofing, and the finishes that decide how a bathroom looks and how easy it is to keep clean.
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How Should Shower Plumbing Be Connected Behind the Wall?
There are four common ways to join PEX water lines behind a shower wall. They differ in how much they restrict flow and how they behave over time. Here is how each one works.
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What’s the Difference Between PEX-A and PEX-B Pipe?
PEX-A and PEX-B are both approved water pipe, but they are made differently and joined differently. Here is what the grades mean and why it matters once the wall is closed.
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Should a Shower Shelf Be Stuck to the Wall or Built Into It?
Tile standards require every horizontal surface in a shower to drain. A shelf added after the wall is finished sits level, which means it holds water. Here is what the standards say and what the alternatives really hold.
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What Goes Behind Shower Tile or Wall Panels?
Greenboard, cement board, plywood and foam board are not interchangeable behind a shower. Here is what each one does when water gets past the surface, and what code actually allows.
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What Is Dezincification, and Why Do Brass Fittings Split?
A brass fitting that has dezincified keeps its shape and passes a pressure test, then splits later. Here is what causes it, which alloys resist it, and why NSF certification does not answer the question.
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Why Do Shower Niches Leak, and How Is One Built Properly?
A standard shower niche contains around twelve changes of plane, and every one is a place water can reach framing. Here is what the waterproofing standards require, why niches fail, and how one is built so it does not.
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Why Does a Shower Pan Flex or Feel Hollow Underfoot?
A shower pan that gives slightly when you step on it usually has voids underneath. Here is what supports a pan, what the published construction actually is, and why it changes the sound and the temperature.
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