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Deflection

Deflection is how much a floor or beam bends under weight.

Framing and Structure

Why it matters

Too much bending cracks tile, causes squeaks, and makes floors feel cheap.

Where people get this wrong

A thicker finish floor rarely fixes a weak structure.

Real-world example

Tile looks perfect at install. Months later grout lines crack. The tile was not the problem. The floor bend was the problem.

Where this hits your build

This shows up during framing. Once walls are up and covered, you lose access. The pre-drywall walkthrough is your window to verify.

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