Sunfold Systems Limited Bifold Door Repair Specialists

Professional Repairs, Servicing & Assessments for Sunfold Bifold Doors

 

Pro-Lock provides specialist repair, servicing and maintenance for Sunfold Systems Limited bifold doors across Norfolk, Suffolk, Cambridgeshire, Essex, Kent and East Sussex.

​

Although Sunfold Systems Limited ceased trading in 2019, thousands of their aluminium bifold doors remain in homes and commercial properties throughout the UK. Our engineers continue to repair, service and maintain these systems wherever possible.

​

Unlike many companies, we specialise exclusively in bifold door repairs rather than replacement. We can still carry out servicing, adjustments, panel realignment, lock repairs, handle replacement and many general maintenance works on Sunfold doors. However, due to the age of these systems and the closure of the manufacturer, the availability of replacement parts has become increasingly limited.

​

Important Information Before Booking

 

As Sunfold Systems Limited is no longer trading, obtaining genuine replacement components has become significantly more difficult.

 

While some parts such as:

​

• Lock mechanisms

• Handles

• Hinges

• Gaskets

• Certain hardware

​

remain available or have suitable alternatives, other critical components, including some roller assemblies and track-specific running gear, may no longer be manufactured or obtainable.

Although replacement parts are often advertised online, many are manufactured to revised specifications or different dimensions and are not always compatible with older Sunfold door systems.

​

For this reason, every Sunfold repair is now assessed on a case-by-case basis.

​

We are happy to carry out a professional assessment to determine whether a repair is possible before recommending replacement.

​

Please note: Unlike our standard repair assessments, the assessment fee for Sunfold doors is non-refundable if suitable replacement parts cannot be sourced. This reflects the additional time required to inspect the system, identify components and investigate current parts availability.

Our aim is to provide you with an honest assessment so you can make an informed decision before committing to further expenditure.

​

Why Choose Pro-Lock?

 

Sunfold bifold doors are precision engineered systems that require specialist knowledge to diagnose and repair correctly.

​

Our engineers have extensive experience working on discontinued Sunfold systems and understand the common faults affecting these doors.

Where parts remain available, we can often repair rather than replace your doors. Where they are not, we'll explain the available options clearly and honestly.

​

Our services include:

​

• Professional servicing

• Door realignment

• Toe and heel correction

• Lock repairs

• Handle replacement

• Hinge adjustment

• Track maintenance

• Fault diagnosis

• Parts identification and sourcing where possible

​

Our priority is always to restore your existing doors wherever it remains practical and economically viable.

​

Common Problems with Sunfold Bifold Doors

 

As these systems age, a number of common issues begin to develop.

 

These include:

​

• Doors becoming difficult to open or close

• Panels dropping or sagging

• Poor locking engagement

• Worn rollers

• Stiff operation

• Damaged handles

• Loose hinges

• Panels catching on the threshold

• Water ingress caused by worn seals

• Doors falling out of alignment

• ​

Many of these problems are caused by years of normal use, while others originate from incorrect installation or gradual movement of the building.

​

Toe & Heel Misalignment

 

One of the most common faults we encounter is incorrect toe and heel alignment.

 

Symptoms include:

​

• Doors rubbing on the frame

• Difficulty locking

• Uneven panel gaps

• Increased wear on rollers and hinges

• Excessive strain on locking mechanisms

​

Where possible, we re-align the door panels, adjust the hinges and redistribute the weight correctly to restore smooth operation and reduce unnecessary wear.

​

What Can Still Be Repaired?

 

Depending on your particular Sunfold system, we may still be able to carry out repairs including:

​

• Full servicing

• Panel adjustment

• Toe and heel correction

• Lock replacement

• Handle replacement

• Hinge repairs

• Seal replacement

• General maintenance

• Fault diagnosis

​

If replacement roller assemblies or specialist running gear are required, availability will depend on the exact model and production date of your doors.

​

Frequently Asked Questions

 

Can my Sunfold doors still be repaired?

In many cases, yes. However, every system is different and parts availability now varies considerably depending on the age and specification of the doors.

​

Why can't replacement parts always be sourced?

Sunfold Systems Limited ceased trading in 2019. Since then, many original components have become obsolete. Some replacement parts advertised online are manufactured to revised designs and dimensions, meaning they are not always compatible with earlier door systems.

​

Is the assessment still worthwhile?

Yes. Even if replacement parts are unavailable, our assessment provides a professional diagnosis of the fault and allows you to make an informed decision about whether repair remains viable or whether replacement is the more practical option.

​

Why isn't the assessment fee refundable?

Unlike our standard repair assessments, considerable time may be spent identifying obsolete components and investigating parts availability. As repairs cannot always proceed through no fault of either party, the assessment fee covers the professional inspection and technical advice provided.

​

Our Honest Approach

We believe customers deserve honest advice.

If we believe your Sunfold doors can be repaired, we'll explain exactly what's required and provide a quotation.

If replacement parts are no longer available, we'll tell you rather than attempting temporary repairs that are unlikely to provide a lasting solution.

Our objective is always to help you make the most cost-effective and informed decision for your property.

​

Book a Professional Sunfold Door Assessment

If your Sunfold bifold doors have become difficult to operate, don't assume they need replacing.

Many faults can still be rectified through servicing, adjustment or replacement of available components.

Where repairs are no longer possible due to obsolete parts, we'll explain why and help you understand your options, giving you complete confidence before deciding whether replacement is necessary.

Pro-Lock provides specialist Sunfold bifold door assessments, servicing and repairs across Norfolk, Suffolk, Cambridgeshire, Essex, Kent and East Sussex.