Threshold
Definition and meaning of Threshold in real estate.
A threshold is a horizontal sill or trim strip located at the bottom of a doorway that creates a transition between different flooring surfaces or separates the interior of a building from the exterior.
In more detail
This component seals the gap under a door to prevent drafts, moisture, pests, and dust from entering the property. In exterior doors, it works in conjunction with a door sweep to form a weather-tight seal. For interior doorways, a threshold covers the joint where two different flooring types meet, such as carpet joining tile.
Builders typically install thresholds made of oak, aluminum, brass, or marble depending on the location and durability requirements.
Key facts
| Category | Property Types & Construction |
|---|---|
| Common materials | Oak, aluminum, marble, or vinyl |
| Primary function | Weatherproofing and flooring transition |
| Location | Base of interior and exterior doorways |
During a home inspection, the inspector noted that the exterior kitchen door threshold was damaged, which allowed rainwater to seep onto the hardwood floor.
Frequently asked questions
Why is my exterior door threshold drafty?
Draftiness usually indicates that the door sweep attached to the bottom of the door or the weather stripping on the threshold itself has worn down and needs replacement.
Can you install a threshold over existing flooring?
Yes, interior thresholds are designed to transition between two floors of different heights and are screwed or glued directly to the subfloor or transition point.