Casement window tune-up
Stiff handles, sagging sashes, espags that won't engage and friction stays that have lost their friction — every annoying little casement defect, sorted on one visit.
Get a casement quote
Scope of the service
- Friction stay replacement (Securistyle, Cotswold, Mila)
- Espagnolette lock realignment & gearbox swap
- uPVC window handle replacement
- Tilt-and-turn restrictor repair
- Timber casement re-glaze prep
- Aluminium window roller refit
- Sash cord renewal (light Edwardian timber)
- Window seal & weather-strip kit fitting
- Anti-snap euro cylinder upgrade
- Window sill drainage clearance
Most common scenarios
The casement that has dropped on its hinges
uPVC and aluminium casements rely on friction stays — slim metal arms hinged top and bottom — to hold the sash square. After about a decade those stays loosen, the sash sags, and the espagnolette lock starts to miss its keeps. Replacement stays are inexpensive but specific to the brand and the maximum sash weight. We carry the four common types in five sizes.
The window handle that turns but doesn't lock
If you can turn the handle 90 degrees but the locking points don't engage, the espag gearbox is almost certainly worn out. We carry universal-fit gearboxes for nine of the ten major UK windows and can usually replace one in twenty minutes once we've identified the spindle length and backset.
The Edwardian timber casement that swells in autumn
Period timber casements expand and contract. Each autumn the sash sticks; each spring it loosens. We assess the binding points carefully — sometimes a few minutes with a smoothing plane is all it takes, sometimes the sash has dropped and needs re-shimming. We don't believe in the "rip-it-out and put a uPVC unit in" school. Period timber lasts when it's looked after.
If your handles work but the sash is whistling, you don't need a new window. You need a stay kit, a seal kit, and a careful afternoon.
Indicative costs
- Friction stay pair, single casement: £85–£135 supplied & fitted.
- Espag gearbox replacement: £120–£175 per window.
- uPVC handle change (anti-snap upgrade): £55–£95 each.
- Timber casement plane & re-shim: £140–£220 per casement.
Bulk visits
If you have multiple casement faults at the same address — three windows that have dropped, a whole flat that's whistling — bundle them on one quote. We usually offer a per-window discount above three, and the call-out fee is paid only once.
Got a few windows to tune?
We're glad to bundle. Tell us which windows are misbehaving and we'll quote them as one visit.