Tilt and Sliding Door Repairs
We don’t just repair sash windows – we preserve the stories, detail, and design that make them timeless
Tilt and sliding doors are a smart, space-saving solution popular in both homes and commercial properties. Their dual functionality—tilting inward for ventilation and sliding horizontally for access—makes them incredibly practical. But like any door system with moving parts, they can become difficult to operate over time, especially with regular use or exposure to the elements.
At GC Doors, we specialise in the repair and servicing of tilt and sliding doors of all makes and materials. Whether your door is sticking, not locking properly, or no longer tilting or sliding as it should, our experienced engineers will get it working like new again. We approach every job with attention to detail and care, whether it’s a small adjustment or a full mechanism replacement.
Brands and Systems We Work With
We service doors from leading European and UK manufacturers, including but not limited to: Roto, Siegenia, Schüco, Reynaers, Velfac, Origin and more…
If your brand isn’t listed, don’t worry — our engineers are experienced in working with a wide range of hardware systems and can source or adapt compatible parts when needed.
Tilt and Sliding Doors
uPVC Tilt and Sliding Doors
uPVC is one of the most popular materials for tilt and sliding doors, especially in residential properties. While low-maintenance and cost-effective, uPVC can warp over time or develop issues with hinges, rollers, or locking mechanisms.
We provide expert repairs for uPVC tilt and sliding doors, including alignment adjustments, track cleaning, seal replacement, lock repairs, and fixing sagging frames. If discolouration or brittleness is present, we’ll assess whether repair or full sash replacement is the better long-term solution.
Aluminium Tilt and Sliding Doors
Aluminium is commonly used in high-end residential and commercial properties for its strength, slim profiles, and modern look. While aluminium frames are more robust than timber or uPVC, the internal hardware—such as rollers, tilt hinges, and locking systems—still requires maintenance and repairs over time.
Our team has extensive experience servicing aluminium tilt and sliding doors from a wide range of manufacturers. We can resolve operational issues, replace worn hardware, adjust thermal breaks, and restore weather seals without compromising the clean aesthetic of the frame.
Timber Tilt and Sliding Doors
Timber tilt and slide doors are valued for their warmth and heritage appeal. However, they require more upkeep than other materials and are more susceptible to swelling, sticking, and rot—especially in older or poorly sealed installations.
We carry out sensitive timber repairs that retain the door’s original character. This may include treating or replacing sections of rotten wood, adjusting swollen panels, re-aligning doors that no longer close properly, and resealing or repainting timber to protect against future weather damage. We also offer refurbishment services for period timber doors, preserving traditional design features while restoring modern functionality.
Composite Tilt and Sliding Doors
Composite doors offer the best of both worlds—typically combining a timber core with a uPVC or aluminium outer layer. These systems are durable, energy-efficient, and low maintenance, but their hybrid construction requires an experienced approach when something goes wrong.
GC Doors is equipped to diagnose and repair issues with composite tilt and slide doors, whether it’s a faulty mechanism, failed seal, or misaligned sash. We use parts and repair methods suited to the specific materials involved, ensuring your door retains its strength and sleek finish.
Tilt and Sliding Door Repairs Services
Why Tilt and Sliding Doors Need Expert Attention
Tilt and sliding doors rely on a more complex mechanism than standard patio or French doors. Issues with one component—whether it’s the rollers, track, tilt hardware or locking system—can affect the entire operation. DIY fixes often make things worse, leading to further damage and more costly repairs.
With GC Doors, you can rest assured your repair is handled by trained professionals who understand the precise alignment and movement these doors require. Our aim is to repair wherever possible, saving you the cost of a full replacement while extending the life of your doors.
🚪 Door Misalignment and Sticking
One of the most common issues with tilt and sliding doors is poor alignment. Doors that drag or won’t close properly can let in draughts, compromise security, and be frustrating to use. We carefully realign the frame, check for warping, and adjust the fitting to restore smooth sliding and a secure seal.
🔄 Tilt Function Failures
If your door no longer tilts inward or if the tilt function is stiff, loose, or unreliable, we can help. We repair or replace damaged hinges, tilt arms, gearing systems, and stays. Our goal is to restore safe, smooth tilting without compromising the sliding function.
🛞 Worn Rollers and Damaged Tracks
Rollers and tracks bear the brunt of the door’s movement. Over time, they wear down, break, or collect debris that hinders smooth operation. We clean, realign, or replace rollers and refurbish or repair damaged tracks to restore glide and reduce resistance.
🔒 Lock and Handle Problems
If your handle feels loose, your door won’t lock, or your key no longer turns smoothly, we carry out full inspections and repairs to restore security and ease of use. We can replace worn multipoint locking systems, adjust internal mechanisms, or fit upgraded locks where needed.
🪟 Draughts, Leaks and Seal Failures
When seals break down, it leads to loss of energy efficiency and comfort. We identify and replace worn or cracked weatherstripping, damaged gaskets and seals, and ensure the door closes tightly to prevent water ingress and heat loss.
🧼 General Servicing and Maintenance
For doors that are aging but still functional, our maintenance service includes cleaning tracks, lubricating parts, tightening fixings, and replacing worn components. This preventative care extends the life of your tilt and sliding door and helps avoid major issues down the line.
Upgrade Options Available
Modern Solutions That Match the Way You Live and Work
While many tilt and sliding doors can be successfully repaired and maintained, there are times when a full upgrade is the more practical and valuable solution. Doors that are excessively worn, have outdated mechanisms, or no longer meet modern standards for insulation, safety, or ease of use may benefit more from a thoughtful replacement than repeated repairs.
Over time, even well-installed tilt and sliding systems can begin to show their age—whether through warping frames, failed seals, stiff or broken rollers, or mechanisms that no longer slide or tilt smoothly. In addition, older systems often lack the energy efficiency and enhanced security features that are now standard in today’s high-performance door designs. Whether you’re looking for better thermal performance, easier access, improved durability, or simply a more modern appearance, we’ll help you make a confident, informed choice tailored to your space and goals.
Tailored to Fit Your Space, Style and Vision
At GC Doors, we understand that no two properties—or clients—are the same. That’s why we offer custom-designed tilt and sliding doors that are made to measure and built to reflect your specific aesthetic, functional and architectural needs.
Whether you’re creating a modern extension, redesigning a heritage property, or working on a new build, our team will work closely with you to develop a design that’s practical, stylish and in keeping with your space. From material selection and frame finishes to glazing types, hardware, and thresholds, every detail is carefully considered and crafted to your requirements.
Full Door Replacement
In some cases, a door may be beyond practical repair—or may no longer meet your needs in terms of performance, appearance or building compliance. When that happens, GC Doors offers a comprehensive door replacement service, giving you a complete, hassle-free upgrade from start to finish.
We replace outdated doors with high-quality, modern tilt and slide systems that offer enhanced insulation, improved security, and a sleek new look. Whether you’re upgrading for comfort, compliance, or curb appeal, our replacements are designed to stand the test of time—both in style and performance.
Professional Sash Window Repair Services in London
Schedule an Inspection
Before starting any job involving the installation, repair, or upgrade of windows and doors, we perform a thorough initial inspection visit. This preliminary step is fundamental to ensuring that each project is executed smoothly and efficiently.
An initial inspection visit provides a critical foundation, allowing us to gather essential information, identify potential issues, and develop a comprehensive plan tailored to your specific needs. Inspection Visits are more than just a formality; they are key to ensuring a well-planned and tailored approach.
Our Customer Promise
Your trust means everything to us — and we work hard to earn it, keep it, and honour it in everything we do. That’s our promise.
At GC Doors, we don’t just supply, install and repair windows and doors — we create experiences that are smooth, reliable, and built on trust. From first enquiry to final sign-off, we’re committed to making your journey with us as straightforward and stress-free as possible.
We understand that every project, whether large or small, represents a meaningful investment. That’s why we treat every customer with respect, listen carefully to your needs, and tailor our approach to meet your goals.
Clear and Honest Communication
We believe in transparency from day one. You’ll always know what to expect — from timelines and pricing to next steps and project updates. We keep you informed at every stage and are always available to answer questions, offer guidance, and provide honest advice.
Professionalism at Every Step
Our team shows up on time, treats your space with care, and works efficiently to get the job done right. We hold ourselves to high standards — not just in our work, but in how we carry ourselves, how we communicate, and how we follow through.
Tailored Advice and Smart Solutions
We take the time to understand your needs and recommend the best products and approaches to suit your space, style and budget. Whether you’re after sleek Sicilian aluminium frames or a reliable repair, we’ll help you make informed decisions with confidence.
Precision and Quality Craftsmanship
Every detail matters. From the accuracy of our measurements to the finish of each installation, we take pride in delivering results that not only look great but perform exceptionally for years to come.
No Surprises – Just Fair, Transparent Pricing
We provide clear, detailed estimates with no hidden costs. We respect your budget and work with you to find the right balance between quality, performance, and affordability.
Ongoing Support and Aftercare
Our service doesn’t end when the job is done. If you have a question, concern, or need support after installation, we’re just a call away. We stand behind our work and are committed to your long-term satisfaction.
Reviews
Leading experts in window and door installation and repairs in London and surrounding areas — but don’t just take our word for it. Read our reviews from satisfied customers who trust us for their window and door installations and repairs. We are committed to providing quality service and ensuring your home or business is secure, functional, and aesthetically enhanced.