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Door sweep
A door sweep is the seal at the bottom of a door that blocks air, bugs, and water.
Why it matters
A missing or worn sweep can create drafts, dust, and pest problems.
Where people get this wrong
A sweep needs the door to be adjusted correctly to seal well. A sweep does not fix a badly detailed threshold.
Real-world example
You can see daylight under the door. That little gap feels small, but on a windy day it can make the entry feel like a tunnel.
Where this hits your build
This comes up during selections and installation. Performance depends on the product and the install. A good window installed poorly still leaks.
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