Quarter round and shoe molding can both cover the expansion gap where flooring meets baseboard, but their profiles differ. Quarter round is roughly a quarter-circle. Shoe molding is usually taller than it is deep, giving a slimmer projection across the floor. Actual dimensions vary, so compare samples against the installed baseboard.
| Consideration | Quarter round | Shoe molding |
|---|---|---|
| Visual weight | Fuller rounded profile | Narrower floor projection |
| Gap coverage | More projection can hide a wider small gap | Preserves more visible floor area |
| Existing trim | Suits some simple or rounded details | Often reads as a lighter separate base detail |
Neither fixes an excessive expansion gap, loose flooring, moisture damage, or baseboard installed too high. Check the flooring maker’s required perimeter gap and maximum trim coverage. Floating floors must remain free to move.
Installation and cost
Fasten molding to the baseboard or wall framing, never through a floating floor. Cope or carefully miter corners and return exposed ends. Cost depends on species, finish, profile availability, room geometry, and labor more than the name. Measure linear footage and price the exact dimensions.
Choose quarter round when its extra projection is needed and suits the baseboard. Choose shoe molding when a narrower footprint and lighter line fit the room. If neither covers the gap while preserving required movement, correct the flooring or base detail instead of stacking trim.