01
What causes a commercial floor spring to fail?
Floor springs fail when internal seals wear and the hydraulic fluid leaks out, or when the spring itself loses tension. Symptoms are a door that slams, drops, refuses to self-close, or sits unevenly in the frame. Heavy doors and high-traffic entrances accelerate floor spring wear.
02
Can a floor spring be repaired or must it be replaced?
Floor springs are sealed units — once the internal seals have failed and the fluid has leaked, the unit cannot be re-filled or rebuilt and must be replaced. The cover plate (the brass or steel strip set into the floor) can usually be re-used.
03
How much does a commercial floor spring replacement cost?
A floor spring replacement is typically a few hundred pounds in parts plus labour. The exact figure depends on the spring make, the door weight, and whether the cover plate also needs replacing. A same-day written quote can be given from photographs of the existing unit.
04
What is the difference between a floor spring and a transom closer?
A floor spring sits in a recessed box in the floor below the door and uses a bottom pivot to control closing. A transom closer sits horizontally inside the top frame (transom) of an aluminium door. Both do the same job — control the door's closing speed and latch — but from different positions. Most APG glass doors use floor springs; most aluminium shopfront doors use transom closers.
05
How long does a floor spring replacement take?
On site the swap itself is 2–4 hours, but the door must be lifted off and re-aligned, so booking a half day is sensible. We can work out of hours where the entrance must remain in service during the day.