Symptoms
- Door bangs shut loudly
- Closer seems to speed up right before latching
- Slamming started recently or worsened over time
Likely causes
- CommonClosing speed adjustment set too fastMost door closers have an adjustable valve controlling how fast the door swings shut.
- CommonLatch speed (final few inches) set too fast separatelyMany closers have a separate adjustment just for the final snap into the latch.
- PossibleLow hydraulic fluid or worn closerOlder closers can lose their ability to control speed evenly as the fluid or seals wear out.
- PossibleSpring tension set too highOverly strong spring tension on storm door closers can cause hard slams.
What to do
- Locate the adjustment screws on the closer body, usually near the hinge end, labeled for general speed and latch speed.
- Turn the general speed screw slightly clockwise (typically) to slow the door's swing, testing after each small adjustment.
- Adjust the separate latch speed screw if present to slow just the final few inches before closing.
- Test the door multiple times, making small adjustments rather than large ones.
- For storm doors with a simple closer, check for a low/medium/high tension setting and reduce it.
- If adjustments no longer have an effect, the closer's internal hydraulic fluid may be worn out and need replacement.
Tools and parts
- Small screwdriver
Replacement door closerSearch: “adjustable door closer”
When to call a pro
Consider replacing the door closer if adjustment screws no longer control the speed effectively.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.