Hardware and parts
Door closers
A door closer is a hydraulic device that shuts a door after it has been opened, at a controlled speed. Overhead, transom and concealed types are covered by BS EN 1154, which grades them by power size from EN 1 to EN 7 according to door width and weight.
Where does it work well?
Aluminium, timber and steel doors where the closer can be fixed to the door, frame or transom, including fire doors, back-of-house doors and shop entrances that need a simple, serviceable closing device.
Pros
- Simple to replace
- Adjustable speed and latch
- Options for backcheck and delayed action
- Fire-tested models available
Cons
- Visible on the door unless concealed
- Arms can be damaged by forced opening
- Can make a door heavy to open if oversized
How long does it last?
Typically several years on busy doors and longer on light-use doors, with oil leaks usually the first sign of failure.
What should you check when buying?
Pick the power size by door width and weight, and check the BS EN 1154 grading on the unit. Fire doors need EN 3 or above and a product suited to that door. On public entrances, check the door stays comfortable to push.
Common questions
What is backcheck on a door closer?
Backcheck is a hydraulic cushion that slows a door as it is opened wide, protecting the frame and wall from a hard swing. It is useful on windy sites, and can usually be adjusted on the closer body.
What is a delayed-action closer?
A delayed-action closer holds the door open for a few seconds before it starts to close. That helps people with pushchairs, wheelchairs or stock trolleys get through, although it should not be used where the fire strategy rules it out.