HouseChalk
PEX piping
PEX is a flexible plastic piping commonly used for water supply lines in modern homes.
Why it matters
PEX is easier to install than copper, resists corrosion, and tolerates some freezing. It is now standard in many new homes.
Where people get this wrong
PEX should not be exposed to direct sunlight. There are different types (PEX-A, PEX-B) with different properties. Connections require proper fittings.
Real-world example
A home is replumbed with PEX. The flexible tubing snakes through walls without needing as many fittings as copper would. Fewer fittings mean fewer potential leak points.
Where this hits your build
This comes up during rough-in and final fixture installation. Accessibility for future repairs matters as much as the initial install.
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