Sliding Patio Doors South London & Surrey

A good sliding door changes how a room feels. It lets in more light, opens up your garden, and takes up no space when you open it.

Glitz Windows & Doors supplies and fits sliding patio doors across South London and Surrey. We are a family-run company based in Coulsdon, with over 25 years of experience. You deal directly with our team, not a call centre.

Whether you want a slim aluminium design or a practical uPVC door, we’ll measure up for free and give you a clear written quote.

What Is a Sliding Patio Door?

A sliding patio door has two or more glass panels that glide along a track. One panel usually stays fixed while the other slides open. Larger doors can have three or four panels.

Because the panels slide instead of swing, they need no room to open. That makes them a smart choice for smaller rooms, narrow gardens and tight spaces. They work well as residential sliding doors for houses, extensions and flats with garden access.

Our Bifold Doors Material

Choose the material that suits your home and budget. Both options are made to measure, energy efficient and fitted by our own team across South London and Surrey.

Aluminium Sliding Patio Doors

Slim, strong frames give you bigger glass panels and more light. Our thermally broken aluminium doors look modern, need very little upkeep and come in a wide range of colours.

uPVC Sliding Patio Doors

Well insulated, good value and never in need of painting. Our uPVC sliding doors suit most family homes and are quick and easy to clean, in white or woodgrain finishes.

How Our Process Works

Fitting a new door is not complicated when it’s done properly, but small mistakes show up for years. This is how we work.

Free visit and measure

We come to your home, check the opening and talk through your options. You get a written quote with no obligation.

Made to measure

Your doors are made to fit your opening, not squeezed in.

Removal of the old door

We take out the old patio door and prepare the opening.

Fitting and levelling

We fit the new frame, check it is level, and test that the panels slide smoothly and lock correctly.

Sealing and finishing

We seal the frame, tidy up and show you how to use and care for your doors.

Certificate and guarantee

As FENSA-registered installers, we give you a completion certificate. Your installation is also covered by our 10-year guarantee.

Many replacement door jobs can be done in a day. We’ll confirm the timing for your job before we start.

Sliding Door Repairs and Replacement Parts

Not every problem needs a new door. Sometimes a small repair gives you years more use. Common jobs include:

Sliding glass patio door repair: doors that stick, jump off the track, or feel rough and heavy

Sliding patio door lock replacement: keys that jam, hooks that don’t catch, or a lock that no longer feels secure

Sliding patio door handle replacement: loose, cracked or broken handles

Replacement glass for sliding patio doors: cracked panes, or double glazing units that have misted up

Rollers, tracks and seals: worn parts that cause draughts or make the door hard to move

Repair or replace? If the frame is in good shape and the problem is a lock, handle, roller or glass unit, repair is usually the cheaper answer. If the frame is warped, the door is very old, or you’re losing a lot of heat, a new door often makes more sense. We’ll tell you which one it is.

Do You Need Planning Permission for Sliding Patio Doors?

Usually not, if you’re replacing an existing door or window opening. But rules can differ for listed buildings, conservation areas and some flats. If you live in one of these, check with your local council first. We can help you work out what applies during your free visit.

Why Choose Glitz Windows for Bifold Doors in South London & Surrey?

25+ years of experience in windows, doors and conservatories

FENSA registered installers, with a completion certificate on every job

10-year guarantee on every installation

Free measuring and quotes, with no obligation

Made-to-measure doors in aluminium and uPVC

Direct contact with our team, with no call centre

What Our Customers Says About Us

Sliding Patio Doors - FAQs

How much do sliding patio doors cost?

It depends on the size, the material, the glass and the number of panels. Aluminium usually costs more than uPVC. We give you a clear written price after a free visit, so you know exactly what you’re paying for.

Are sliding patio doors secure?

Modern ones are. Look for multipoint locking, anti-lift protection and good quality glass. We’ll show you the security features on the doors we fit.

How long does it take to fit sliding patio doors?

Many replacements can be done in one day. We’ll confirm the timing for your home before we begin

Can you repair my existing sliding door instead of replacing it?

Often, yes. Stiff rollers, worn seals, broken handles, faulty locks and misted glass can usually be fixed or replaced. If the frame itself is damaged or very old, we’ll tell you honestly if replacement is better value.

Can you replace just the glass in my sliding patio door?

In many cases, yes. If the frame is sound, we can replace a cracked pane or a failed double glazing unit without replacing the whole door.

Which is better, aluminium or uPVC sliding doors?

Neither is “best” for everyone. Aluminium gives slimmer frames and more glass. uPVC offers good value and a practical, clean look. We’ll help you pick the right one.

Will my new doors come with a guarantee?

Yes. Our installations come with a 10-year guarantee, and you get a FENSA certificate on completion.

Sliding Patio Doors Installation, Repair & Replacement

Need Sliding Patio Door Services in South London & Surrey?

Whether you’re installing new Sliding Patio Door, replacing old ones or need a repair, our team is here to help.

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Have a unique idea or specific requirements? Our team specialises in tailored window and door solutions to suit your vision—built to exact specifications and installed with precision.

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