Pro-Lock · FAQ
Clear answers before you decide.
From the £79 professional assessment to parts, payment, and coverage, here is how Pro-Lock approaches bifold-door repair. If your question is not here, tell us what the door is doing.
Questions, answered
The useful detail, in plain English.
Every repair starts with understanding the complete doorset. Open any question to see how the assessment, recommendation, and repair route fit together.
See the full processWhy 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.
What happens during the assessment?
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 assessment lasts 45 to 60 minutes. It is an assessment only: no repair work is carried out during the visit.
What happens after the assessment?
No repair work is carried out during the assessment. The findings are followed by a comprehensive report and itemised quotation by email, with repairs arranged separately. You can review the findings and decide whether to proceed before any work begins.
What types of bifold-door problems do you repair?
Pro-Lock repairs jammed doorsets and can carry out complete doorset overhauls where appropriate. 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. We also work on fractured hinges; broken, worn, or disconnected rollers; dragging or misaligned panels; panels catching thresholds or headers; difficult locking; faulty locks, cylinders, handles, and keeps; and worn or damaged tracks and seals.
Do I need to identify the brand or doorset before contacting you?
You do not need to identify your doorset before getting in touch. Many bifold doors are unbranded or contain a combination of components from different manufacturers. Identifying the system, cross-checking component and part availability, and sourcing suitable parts through our established European network of suppliers is our job. Pro-Lock regularly repairs bifold door systems that other repairers have classed as obsolete, where a suitable repair route can be identified.
Can you repair older or obsolete bifold-door systems?
Pro-Lock repairs many bifold-door systems that other repairers class as obsolete, using an established European supplier network to source parts where appropriate. Parts availability and the condition of the doorset determine whether a suitable repair can be quoted, so we do not guarantee that every repair will be possible.
What is toe and heel?
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.
Do you repair aluminium, uPVC, timber and hybrid bifold doorsets?
Pro-Lock has extensive experience working with aluminium, uPVC, timber, and hybrid bifold doorsets. The material and system help inform the assessment, and the complete doorset is checked so the repair recommendation fits the door in front of us.
Explore the Brands pageWhat happens if parts are unavailable or the doorset is beyond economical repair?
The findings are explained in the report. 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.
How is payment handled?
Repairs are paid for on completion, after the agreed repair work has been completed to your satisfaction. The assessment fee is handled separately under the £79 assessment terms above.
What warranty do you provide?
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.
Which areas do you cover?
Pro-Lock covers Norfolk, Suffolk, Cambridgeshire, Essex, Kent, East Sussex, West Sussex, Surrey, and Hertfordshire.
See all service areasHow do I contact Pro-Lock?
Call 0330 311 0975, email enquiries@bifold-door-repair.co.uk, or use the contact form. You can also use the WhatsApp chat option shown on this site.
Open the contact formStill unsure?
Tell Pro-Lock what the door is doing.
Call 0330 311 0975, email enquiries@bifold-door-repair.co.uk, or use the contact form. The WhatsApp chat option is also available on this site.
