01Fractured or damaged hinges
We assess hinge fracture, wear, looseness, and damage affecting how panels fold or sit.
Pro-Lock · Specialist repair
Bifold door repairs, expert diagnosis and long-lasting solutions.
When a bifold door sticks, drops, drags or becomes difficult to lock, you want it working well again as soon as possible. Our experienced engineer assesses the complete doorset so we can recommend a repair suited to the fault and support reliable operation over time.
What we repair
The detail behind a better-running door.
Bifold doorsets are precision systems, whether aluminium, uPVC, timber, or hybrid. Pro-Lock services and repairs systems from major manufacturers, including aluminium systems by AluK, Origin, Schüco, Reynaers, Cortizo, Smart Systems and Sunflex, uPVC systems by Liniar and Eurocell, and timber doorsets by Henderson, Brio and Centor.
The material changes how a door moves and wears: we check running gear, seals, locking adjustments, timber movement, hardware, and the way hybrid systems work together.
02Broken, worn, or disconnected rollers
We inspect running gear and track together to trace heavy, noisy, or difficult movement.
03Dragging, dropped, or misaligned panels
We assess panel position and connected hardware to recommend work that supports smooth, dependable movement.
04Panels catching the threshold or header
We check panel height, track, frame and alignment to recommend work that restores clear movement at the threshold or header.
05Doors difficult to close or lock
We check closure pressure and lock alignment to help the door close and lock smoothly.
06Locks, cylinders, handles, and keeps
We assess locking and closure hardware, then confirm suitable compatible parts for the repair recommendation.
07Damaged or worn tracks and hardware
We assess tracks, guides, magnets, catches and working hardware, then recommend the servicing or repair that supports smooth operation.
08Failed seals and draughts
We assess seals, panel position and closure together to identify how to restore consistent weather contact.
09Complete doorset overhauls
A complete doorset overhaul is a repair option used when frame distortion is beyond the manufacturer’s tolerances and/or panel realignment cannot compensate for the degree of frame distortion. It can include structural repairs where the frame is distorted, but not every complete overhaul requires structural frame repair.
Complete-system assessment
Why toe and heel support matters.
Toe and heel is a glazing method using manufacturer-specific glazing packers positioned at diagonally opposite corners of the glass pane. They help keep the sash square and level, supporting smooth movement along the tracks and, where relevant, lock alignment with the strike plate. They can also help prevent sagging and panels catching at the top or bottom. It is one important area checked when appropriate; toe and heel is not the cause of every alignment fault.
Toe and heel is one important area we check when appropriate alongside panel position, running gear, hinges, tracks, seals, and the lock line. The assessment considers the roller or adjustment alongside the other connected parts of the doorset to identify work that supports smooth operation.
Seasonal changes in temperature, sunlight and weather can make panels and frames expand and contract. A complete assessment considers these movements alongside the hardware, helping the repair recommendation support reliable operation through changing conditions.
The handle-side panel has dropped
The panel can sit low, rub or catch, and pull the lock out of line. We assess the support and connected hardware.
The door feels draughty or lets in water
We check the seal, panel position and closing pressure together to identify how to restore consistent weather contact.
The door will not lock cleanly
We assess panel alignment, keeps, hinges and locking hardware together to recommend the right route to smooth, reliable locking.
The Pro-Lock approach
How does the £79 assessment help us recommend the right repair?
Pro-Lock assesses the complete doorset and recommends repairs with the aim of returning it to operation as intended by the manufacturer. Understanding how the panels, running gear, seals, locks and frame work together helps reduce unnecessary strain on connected components, support reliable operation and minimise repeat repairs over the long term.
An experienced engineer assesses the complete bifold doorset, talks you through the findings on site, and provides a written report with a quotation for any recommended repairs. The £79 professional assessment includes a complete inspection of the doorset. No repair work is carried out during the assessment. The report and itemised quotation follow by email, giving you the findings and repair options to review before deciding whether to proceed. If you go ahead with a repair, the £79 assessment fee is credited against it. The fee is refunded if we cannot provide a quotation.
£79 professional assessment, credited against any repair, or refunded if we cannot quote. 12 month warranty on completed repair work.
The time on site depends on the faults reported and identified during the visit, and varies accordingly. The average is around 60 minutes.
All work carried out is backed by our market-leading 12 month warranty, covering our workmanship and any parts supplied and fitted as part of the repair where applicable. Our specialist repair service keeps the advice focused on your existing doorset and the repair options that suit its condition.
Current operating areas
Our coverage at a glance
Pro-Lock covers exactly 17 counties: Norfolk, Suffolk, Cambridgeshire, Bedfordshire, Essex, Hertfordshire, Surrey, Kent, East Sussex, West Sussex, Lincolnshire, Northamptonshire, Leicestershire, Oxfordshire, Berkshire, Hampshire, and Buckinghamshire. London and the Isle of Wight are explicitly excluded from coverage.
East of England
Midlands
South East and Home Counties
Need to check a nearby town?
View the full service-area page, call the team on 0330 311 0975, or send an enquiry to enquiries@bifold-door-repair.co.uk.