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Blocking
Blocking is extra wood installed between studs so you have solid backing to mount heavy items later.
Why it matters
Blocking saves you from opening walls later. It also makes installs stronger and safer.
Where people get this wrong
Stud spacing is rarely where you want it. Blocking puts wood where you need it. Blocking is cheap before drywall and expensive after drywall.
Real-world example
You buy a heavy mirror and the only good spot is between studs. With blocking, you hit solid wood every time. Without blocking, you trust anchors and hope.
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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