Joint quality and fit
Trim joints should be tight with no visible gaps. Miters should meet cleanly. Baseboards should be tight to wall and floor.
Standard
Trim joints should be tight with no visible gaps. Miters should meet cleanly. Baseboards should be tight to wall and floor.
How to check
1. Check miter joints at corners — should be tight with no visible gap
2. Check scarf joints on long runs — should be smooth and barely visible
3. Verify baseboards are tight to the wall (no gaps) and consistent height
4. Check crown molding joints — cope joints preferred at inside corners (tighter than miters)
5. Check door and window casing — should be consistent width, miters tight at corners
6. Verify nail holes are filled and sanded smooth
7. Check caulk line between trim and wall — should be smooth and continuous
8. Inspect for consistent paint coverage on all trim
Common problems
- Open miter joints (most visible trim defect)
- Gaps between baseboard and wall (wave in wall — needs caulk)
- Visible nail holes not filled
- Inconsistent caulk lines (thick globs or gaps)
- Crown molding separating from ceiling
- Paint drips or missed spots on trim
- Different trim profiles in same room