A stop bead is a narrow strip of timber or plastic fixed to a door or window frame that acts as a stop for the door or window when it closes. The bead forms the ledge against which the door or window rests, providing a seal and a neat finish.
Function of a stop bead
Not every frame has a machined rebate. In many cases the stop is created by fitting a separate stop bead to the frame. This strip is screwed or pinned to the frame and serves the same purposes as an integral rebate:
- Sealing — the door or window closes against the bead, keeping out draughts and moisture
- Positioning — the bead determines where the door or window stops when closing
- Finish — the bead gives the frame a clean, finished appearance
- Flexibility — a stop bead can be replaced or adjusted without altering the entire frame
Application
Stop beads are used in several ways:
For internal doors
The stop bead is fixed to the lock side and head of the frame. The door closes against these strips. On the hinge side, a bead is not required because the hinge already determines the door position.
For external doors and windows
Wider and thicker stop beads are typically used, often fitted with a rubber or foam draught seal for improved weather and wind resistance.
During renovation
Stop beads are particularly useful in renovation work. If an existing frame has no rebate, a stop bead can be added without replacing the frame.
Material and dimensions
| Material | Application |
|---|---|
| Pine or spruce | Internal doors, to be painted |
| Hardwood | External doors and windows, more durable |
| PVC | Plastic frames, maintenance-free |
| MDF | Internal doors, smooth finish |
Common dimensions are 12-18 mm wide and 6-10 mm thick. The bead is usually fixed with countersunk screws or panel pins and then painted or lacquered.
Related terms
- Door frame
- Door stop rebate
- Rebate
- Door
- Window
- Draught strip
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