01
Fractured or damaged hinges
We inspect hinges for fracture, wear, looseness, and damage that is affecting the way panels fold or sit.
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Pro-Lock · How it works
A proper bifold door repair starts with diagnosis.
Pro-Lock repairs the full range of faults that can leave a bifold door sticking, dropping, dragging, catching, or difficult to secure. We find and address the underlying cause rather than applying a short-term fix to the visible symptom.
What we regularly repair
The visible fault is only the starting point.
From individual components to a complete doorset overhaul, Pro-Lock checks how panels, frame, running gear, seals, and locking hardware work together. 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. Parts availability determines which compatible options can be quoted.
02
Broken, worn, or disconnected rollers
Failed or disconnected rollers can make a doorset heavy, noisy, or difficult to move.
03
Dragging, dropped, or misaligned doors and panels
We look at panel position and connected hardware rather than adjusting one visible symptom in isolation.
04
Panels catching the threshold or header
The assessment establishes whether panel height, alignment, running gear, track, or frame is making contact.
05
Doors difficult to close or lock
A door that needs force at the handle may have an alignment, hinge, roller, keep, or lock issue.
06
Faulty locks, cylinders, handles, and keeps
We assess closure and security hardware and confirm whether a suitable repair or replacement part can be sourced.
07
Damaged or worn tracks and hardware
Tracks, guides, magnets, catches, and other working hardware can wear or become damaged over time.
08
Failed seals and draughts
We check seals alongside panel position and closure, not as an isolated quick fix.
09
Toe and heel glazing support
Where appropriate, we check the manufacturer-specific glazing packers that help keep the sash square and level.
10
Complete 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.
Cause, not just symptom
A holistic assessment of the complete doorset.
Pro-Lock checks the complete doorset and aims to return it to operation as intended by the manufacturer, rather than treating only the immediate symptom. This helps prevent unnecessary stress transferring to mechanical components, reduces the cycle of repeat repairs, and maximises long-term reliability and service life.
Multiple measurements and detailed observations help identify distortion, alignment issues, components beginning to fail, and underlying causes that could reduce the doorset's lifespan. Seasonal changes in temperature, sunlight, and weather can make panels and frames expand and contract, so a temporary adjustment may not be enough.
Addressing only the visible symptom can lead to repeat repairs, replacement parts, and avoidable additional cost, so the assessment looks for the cause as well.
Assessment before repair
Why do you charge £79 for an assessment when some companies offer free quotes?
Your assessment is carried out by an experienced engineer, not a salesman. We complete an in-depth assessment of all aspects of your bifold doorset, talk you through the findings while we are on site, and provide the information in the report that accompanies the quotation for any repairs recommended. The £79 professional assessment visit lasts 45 to 60 minutes. No repair work is carried out during the assessment. The report and itemised quotation then follow by email, so you can understand the findings and options before deciding whether to proceed. If you choose to go ahead with the repair, the £79 assessment fee is credited against the repair cost, so you do not pay for the assessment in addition to the repair. The fee is also refunded if suitable parts are unavailable and we cannot provide a quote, or if the doorset is considered beyond economical repair.
Payment is only taken on completion of the agreed repair work, once you are satisfied with the result.
01
Assess
We inspect the frame, panels, hinges, rollers, tracks, seals, locks, and the relationships between them.
02
Report and quote
You receive a comprehensive report and itemised quote by email after the visit.
03
Repair separately
You decide whether to book the repair, with no pressure to replace the doorset.
After the repair
Good work should leave you confident in the door.
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. We do not supply or fit new bifold doors, so the recommendation stays focused on the condition of your existing doorset.
Current operating areas
Specialist Bifold Door Repair Across the East and South East
Pro-Lock currently operates across nine counties in the East and South East of England. Choose a county below for local towns and repair guidance. This is our current working area, not nationwide coverage.
East of England
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.