Sliding door & wardrobe fix
Patio doors that won't slide, bifolds that catch in the middle, mirrored wardrobes that drag along the rail — we replace the parts that cause the friction and tune the geometry that hides it.
Book a slider visit
What this service covers
- Roller cassette swap (Roto, GU, Mila, Schueco)
- Aluminium track straightening & resealing
- Bifold pivot pin and shoot-bolt replacement
- Anti-jump block fitting
- Patio door multipoint lock replacement
- Brush and rubber seal renewal
- Mirrored wardrobe top-track realignment
- Threshold drainage clearance
- Soft-close mechanism repair
- Hardware identification & sourcing
Three patterns of slider failure
1. The roller that has eaten itself
A worn roller on an aluminium patio door is by far the most common slider job we see. The bearings inside the cassette go gritty, then crack, then jam. Many homeowners try lubricant first — sometimes it works for a fortnight. We replace the cassette in pairs (always pairs; replacing one shifts the geometry on the other) and adjust the height screw to set a uniform 2mm gap along the threshold.
2. The track that has bent inwards
A heavy patio door sat on a single point of impact — a dropped flowerpot, a misaligned trolley wheel — will deflect the aluminium track. Once that happens, no roller will run cleanly. We carry portable hydraulic straighteners and dressing files. If the deformation is worse than 4mm, we'll cut a track section in and weld it; below that we straighten and refinish in place.
3. The bifold whose middle joint is misbehaving
Concertina bifolds depend on millimetre-accurate hinge shims. After three or four years of being slammed, those shims wander. The classic symptom is a bifold that closes from the leading edge but won't seat at the centre joint. We strip the leaves, re-set the shims to the manufacturer's pattern, and replace the pivot rollers if their nylon has worn off-round.
Sliding hardware is sensitive. The right fix is rarely the obvious one. Lubricant, longer screws and brute force will buy you a few weeks. We'd rather spend an extra forty minutes diagnosing the actual fault.
Indicative costs
- Patio roller pair, supplied & fitted (single-leaf opening): £215–£295.
- Aluminium track strip, straighten & reseal: £180–£260.
- Bifold pivot & hinge shim service (3–4 leaves): £290–£420.
- Mirrored wardrobe top-track realignment: £140–£220 depending on width.
Before we arrive
Two photos help: one of the door fully open from the inside, one of the bottom track from the outside. If you can lift the door slightly to test for play in the rollers, that test (a video clip will do) tells us what stock to pack. Most slider repairs are a single-visit fix.
Slider stuck right now?
Call us on +44 20 7946 0312 for an emergency slot. Most patio-door rescues are completed inside three hours of the phone ringing.