Flooring Trim

Every profile answers one edge

A floor stops somewhere, and what it meets decides the profile. Meeting a wall wants a quarter round. Meeting another floor of the same height wants a T molding. Stopping at a doorway with nothing beyond it, or finishing higher than whatever comes next, wants an end cap or a reducer.

Going down a step wants a stair nose, and the vertical face of that step wants a riser. Those conditions cover most edges in a house. The rest, the awkward junctions and the transitions that do not fit a standard profile, are what the wider range beyond these five pages is for.

Two ways to slice the same range

The trim here can be looked at by profile, which is what the pages above do, or by the floor it belongs to. The LVT moldings range is the second view: every profile, but only in vinyl finishes, and it divides again into transitions and stair nosing.

Which view is more useful depends on where you are. If the floor is already chosen, the material view narrows faster. If the question is what a particular doorway needs, the profile view is the one that answers it.

Matching trim to the floor

A trim piece is made to go with a specific floor, in the same color and usually by the same maker. That is why the range is so large: every floor in a catalog needs its own set of profiles.

It is also why trim is worth ordering with the floor instead of after it. A color that is current when the floor is bought may not be a year later, and an approximate match at a doorway is the detail that gives a floor away.

How much is needed

Trim is sold by the length, and the quantity comes from measuring the edges and not the area. Doorways, the bottom of walls where the baseboard will not cover the gap, the edge of each step and the line where two floors meet are all separate runs.

Those add up quickly in a house with several rooms on one floor, and they are easy to forget until the floor is down and the edges are open. Listing the edges at the same time as measuring the rooms is what avoids a second order.

Why trim exists at all

A floating floor moves with temperature and humidity, so it is laid with a gap at every fixed edge. Trim covers that gap and lets the floor move underneath it, which is the structural reason and not the decorative one.

It also protects the edge of the floor, which is the part most easily damaged, and it makes the change between two surfaces deliberate rather than accidental. All three jobs are done by the same small piece.

Where to start

Walk the floor and name each edge: wall, doorway, step, change of material. That list is the order, and each item on it points at one of the profile pages.

The LVT moldings page covers the same profiles from the material side for anyone who has already chosen a vinyl floor.