A door jamb is the vertical structural frame lining the interior of a door opening — the two side pieces and the horizontal head jamb that the door closes against.
In practice
You'd see this when a property manager in East Vancouver, WA calls about a rental unit back door that won't close properly.
Why it matters
Door jamb issues surface frequently in property management maintenance calls.
Common questions
Why does my door stick or not latch properly?+
Most common causes are a warped jamb, shifted frame from settling, or strike plate misalignment.
When does a door jamb need replacement vs. repair?+
If the jamb is soft, shows rot, or is separating from the framing, replacement is typically better.
Need this done right?
Talk to a real contractor.
Free onsite consultation and a line-item estimate you can actually read.