The 'New Door' Scam: Why Repairing Is the Secret Your Salesman Won't Tell You
- Matt House
- Jul 2
- 4 min read
If you own a set of bifold doors that have started to drag, stick, or refuse to lock, you have likely already faced "The Pitch." You call out a local double-glazing company, and within five minutes, the salesman is shaking his head. "They’re obsolete," he’ll tell you. "Parts aren't made for these anymore. The frame has warped. You’re looking at a full replacement."
He then slides a quote across the table for £8,000, £10,000, or even £15,000.
At Pro-Lock, we call this the 'New Door' Scam. It isn't always a lie: sometimes they genuinely don't know how to fix them: but it is almost always unnecessary. The truth is that 99% of external bifold doors can be restored to perfect working order for a fraction of the cost of a replacement.
Why Do Salesmen Push for Replacement?
The reason is simple: profit margins and skill sets. Most window and door companies are set up to sell and install, not to service and repair.
Commission Structures: Salesmen earn a percentage of the total sale. A £12,000 installation earns them a significant payday; a £400 repair earns them nothing.
Lack of Specialist Knowledge: Bifold doors are complex mechanical systems. They require an understanding of compression, lateral adjustment, and specific hardware tolerances. Most general fitters simply do not have the specialist tools or training to diagnose a mechanical failure.
The "Obsolete" Myth: Claiming parts are no longer available is a common tactic. While some manufacturers have gone out of business, many use "universal" hardware or components found across well-known systems such as Origin, Schuco, Beaufort, ALUK, Reynaers, and Smarts that can be sourced or adapted by a specialist.
The Pro-Lock Difference: Unbiased, Expert Advice
We are not like other door companies. Pro-Lock does not sell new doors.
Because we have no interest in selling you a replacement, our advice is 100% unbiased. Our goal is to prolong the life of your existing doors and restore their performance. We specialise in the professional repair, maintenance, and servicing of external bifold doors: whether they are made of aluminium, uPVC, timber, or hybrid materials.
✅ Repair over replacement: We save our customers thousands of pounds by focusing on restoration. ✅ Transparent pricing: We charge a fixed fee of £79 for a comprehensive on-site assessment. ✅ Written guarantees: All our repair work is backed by a 12-month warranty. ✅ Specialist hardware: We stock a vast array of rollers, hinges, tracks, and gearboxes for many leading systems, including Origin, Schuco, Beaufort, ALUK, Reynaers, and Smarts.

Common "Unfixable" Problems We Solve Daily
If a salesman has told you that your doors are "past their best," they are likely referring to one of these three issues. Here is how we actually solve them:
1. Dragging and Misaligned Panels
The Salesman’s Claim: "The track is bent or the house has settled, so the frame is no longer square. You need a new set." The Reality: Bifold doors carry immense weight. Over time, the hinges and rollers can shift by just a few millimetres, causing the panels to "drop" and drag on the bottom track. Our Solution: We perform a precision realignment. By adjusting the lateral and vertical settings on each panel, we can re-set the doors to their original factory tolerances. This eliminates the drag and prevents further damage to the track.
2. Broken Rollers and "Gritty" Tracks
The Salesman’s Claim: "The rollers have seized and you can’t get the parts for this brand anymore." The Reality: Most "seized" rollers are actually suffering from flat-spots or debris buildup. Even if they are physically broken, we have a deep network of suppliers for specialist bifold hardware across many popular systems, including Origin, Schuco, Beaufort, ALUK, Reynaers, and Smarts. Our Solution: We replace worn rollers and deep-clean the tracks to restore that "gliding" feel. We use high-quality, durable components that often outperform the original factory parts.

3. Faulty Locking Mechanisms and Gearboxes
The Salesman’s Claim: "The internal lock has snapped. You can't fix the internal guts of these doors; it's easier to replace the whole panel." The Reality: The "gearbox" is the heart of the locking system. When it fails, the door often becomes stuck in the locked or unlocked position. Our Solution: We are experts in bifold lock repairs. We can often bypass a stuck lock without damaging the door, remove the faulty gearbox, and install a high-security replacement. We can also upgrade your cylinders to anti-snap technology to enhance your home's security.
The Cost: Repair vs. Replacement
The financial argument for repair is undeniable. A standard 3-panel bifold replacement can easily cost upwards of £5,000 when you factor in the doors and installation labour.
In contrast, a Pro-Lock intervention typically involves:
Professional Assessment (£79): A specialist technician visits your home to diagnose the exact issue and provide a fixed written quote.
The Repair: Most repairs range from a few hundred pounds to a fraction of the cost of a new door.
The Result: Doors that slide with one finger, lock securely, and are free from draughts.
By choosing to restore rather than replace, you are not only saving money but also reducing the environmental impact of sending perfectly good aluminium and glass to a landfill.
Serving Homeowners Across Norfolk, Suffolk, Cambridgeshire, Essex, Kent & East Sussex
We have established a strong local presence across our core service region, ensuring that expert help is never far away for homeowners with external bifold doors that need specialist attention.
Norfolk: From King's Lynn to Norwich.
Suffolk: Including Ipswich, Bury St Edmunds, and the coast.
Cambridgeshire: Serving Cambridge and the surrounding fens.
Essex: Covering Harlow, Epping, Southend-on-Sea, and Chelmsford.
Kent: Specialist repairs in Whitstable, Maidstone, and Canterbury.
East Sussex: Service areas including Eastbourne and Hastings.

Stop Struggling with Your Doors Today
Don't let a salesman talk you into a five-figure bill for a problem that can be solved in a morning. If your external bifold doors are draughty, stiff, or insecure, get a second opinion from the specialists who actually know how they work.
Pro-Lock offers peace of mind through technical mastery. We provide a clear, transparent assessment process so you know exactly what the problem is and how much it will cost to fix.
Take the Next Step
Restore the luxury feel of your home and the security of your property.
✅ Call us today to discuss your door issues. ✅ Book your £79 assessment for a date that suits you. ✅ Get your doors back on track with a 12-month warranty.
Contact Pro-Lock today and stop the 'New Door' scam in its tracks.

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