A loose handrail or newel is a different order of problem, because the balustrade is there to stop a fall and it is only as strong as its fixings.
Why stairs creak
Under the flight, treads and risers are held into the strings with glued wedges. As the glue ages and the timber shrinks, the wedges relax and the tread flexes against the riser each time it is used.
Where the underside is accessible, the repair is straightforward: clean out and re-wedge the joints, add glue blocks between tread and riser, and screw rather than nail the riser into the back of the tread.
Fixing from above when there's no access
With a plastered soffit, we work from the top: screwing treads down into the strings and risers with countersunk, plugged fixings, and injecting adhesive into open joints. On a carpeted flight the fixings disappear entirely.
It is slower and slightly less thorough than working underneath, but it avoids taking a ceiling down for a repair that is fundamentally about movement.
Balustrades and safety
A newel post that moves at the base has usually lost its connection to the trimmer or the string. Bolting it back properly, rather than screwing it into a floorboard, is what restores the strength of the whole run.
While we are there we check spindle spacing and handrail height against current guidance. On older stairs those often fall short, and it is worth knowing where you stand before a child or an older relative starts using them daily.
Common questions
Can a creaking staircase be fixed without removing the ceiling?
Yes. Screwing and gluing from above works well, particularly under carpet, though access from underneath allows the more thorough re-wedging repair.
Is a wobbly newel post dangerous?
It should be treated as such. The newel anchors the balustrade, so a loose one means the guarding cannot be relied on to stop a fall.
Do older stairs have to meet current regulations?
Existing stairs are not required to be upgraded, but any new or rebuilt flight does need to comply, and improving spindle gaps on an old stair is often worth doing anyway.
Can you replace just the balustrade?
Often yes. Replacing spindles, handrail and newel caps while keeping the original flight is a common and cost-effective upgrade.