Choosing a Surface Mounted Door Closer
A surface mounted door closer, often referred to as an overhead door closer, is fitted to the face of the door or frame and controls the door as it returns to the closed position.
Surface mounted closers are widely used on commercial, residential and fire doors because they provide dependable door control while remaining relatively straightforward to install, adjust and maintain.
When choosing a closer, consider the width and weight of the door, frequency of use, required closing force, fire-rating requirements and any additional functions such as backcheck or a guide rail.
Understanding Door Closer Power Sizes
Door closers are commonly classified by an EN power size, such as EN 2, EN 3 or EN 4.
The appropriate power will depend mainly on the size and weight of the door. A fixed-power closer provides a predetermined level of closing force, while a variable power door closer, such as an EN 2–4 model, can be adjusted within a specified range.
Choosing the strongest closer is not always the best option. Too much closing force can make a door unnecessarily difficult to open, while insufficient force may prevent the door from closing and latching reliably.
Adjustable Closing & Latch Speed
Many overhead door closers provide separate adjustments for different stages of the closing cycle.
Closing or sweep speed controls the main movement of the door towards the closed position.
Latch speed controls the final part of the closing movement, helping the door engage properly with the latch without closing excessively quickly.
Variable-power models may also allow the overall spring force to be adjusted to better suit the door.
What is Backcheck?
Backcheck provides additional resistance as the door approaches the later part of its opening movement.
This can be particularly useful on frequently used doors where people may open the door quickly or forcefully. The added resistance helps control the movement of the door and can reduce stress on the door, closer, frame and surrounding ironmongery.
Backcheck should not automatically be considered a replacement for a physical door stop unless the closer manufacturer specifically permits this.
Surface Mounted Closers for Fire Doors
Where a fire door is required to be self-closing, the door closer performs an important function by returning the door to its closed position after use.
Not every door closer should automatically be assumed suitable for every fire door. The closer should have appropriate fire test evidence or certification for the intended door assembly and should be installed in accordance with the manufacturer's instructions.
Roundtower Hardware stocks selected surface mounted fire door closers for residential, commercial and contract applications.
What is a Guide Rail Door Closer?
A guide rail door closer uses a sliding arm and rail rather than the projecting articulated arm commonly associated with traditional overhead closers.
This creates a cleaner and more streamlined appearance, making guide rail closers popular where architectural appearance is important while retaining the convenience of a surface mounted closer.
Frequently Asked Questions
What is a surface mounted door closer?
A surface mounted door closer is fitted visibly to the face of a door or frame and automatically controls the door as it returns towards the closed position. It is also commonly called an overhead door closer.
What size door closer do I need?
The correct closer depends mainly on the width and weight of the door, although seals, hinges, air pressure, wind exposure and frequency of use can also affect performance.
Always check the manufacturer's recommended door dimensions and power rating.
What does EN 3 mean on a door closer?
EN 3 refers to the closing power of the closer. Different EN power sizes are intended for different door widths and weights.
Some closers have a fixed power rating, while adjustable models may offer a range such as EN 2–4.
Can a surface mounted door closer be adjusted?
Many models can. Depending on the closer, adjustments can include closing speed, latch speed, spring power and backcheck.
The available adjustments vary between products, so the individual specification should always be checked.
Can a surface mounted closer be used on a fire door?
Yes, provided the particular closer is suitably tested or certified for the intended fire door application and is installed in an approved configuration.
A standard overhead closer should not automatically be assumed suitable for a fire-rated door.
What is the difference between a surface mounted and concealed door closer?
A surface mounted door closer is fitted visibly to the door or frame.
A concealed door closer is recessed into the door, frame or floor, leaving significantly less of the closing mechanism visible. Concealed closers are often chosen where architectural appearance is a priority.
What is the difference between fixed and variable power door closers?
A fixed-power closer provides one predetermined level of closing force.
A variable power closer allows the closing force to be adjusted within a specified range, giving greater flexibility for different door widths, weights and installation conditions.
Need Help Choosing a Surface Mounted Door Closer?
The correct closer will depend on your door size, weight, application, fire-rating requirements and required functionality.
Roundtower Hardware supplies surface mounted door closers, overhead fire door closers and guide rail door closers throughout Ireland.
Browse our range online or contact our team if you need help selecting the correct closer for your project.
