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Caulk
Caulk is a sealant used to close small gaps at joints and transitions.
Why it matters
Caulk helps block water and air, but it should support good details, not replace them.
Where people get this wrong
Caulk is not flashing. Caulk is maintenance. It will fail over time because the house moves.
Real-world example
A contractor says, do not worry, we will caulk it. That is like saying, do not worry, we will tape the bumper back on. Caulk helps, but it should not be the main plan for water.
Where this hits your build
This affects how your home handles water. Water damage is one of the most expensive problems to fix, and it often starts with details that seem small.
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