UPVC Sliding Window & Door Repair in Motor City, Dubai | Fix Aluminium Glass
Project story, Motor City

UPVC Sliding Window and Door Repair in Motor City, Dubai

A full service on a family home’s sliding windows and doors. New brush seals, locks that actually lock, sashes that glide again, fresh fly nets and clean frames. Here is what we found and how we fixed each problem.

By The Fix Aluminium Glass site team Published 9 minute read
Location
Motor City, Dubai
Systems
UPVC sliding windows and sliding doors
Scope
Repair, part replacement and full service
On site
Late September 2026

The short version

Our team serviced every UPVC sliding window and sliding door in a family home in Motor City, Dubai. We replaced the worn brush seals, repaired the faulty locks, and fixed the sliding problems by changing the mechanism on the worst sashes and repairing and servicing the rest. We also installed new fly nets and cleaned every frame. Protection sheets went down around each window before work started, so the rooms stayed clean the whole time.

What was going wrong

Nothing in this house had failed all at once. It was the slow kind of wear that creeps up on you until every window feels like a small fight.

The sliding door to the garden needed two hands and a bit of shoulder to open. A couple of windows rumbled and jumped on their tracks. One lock turned all the way but the sash still moved when you pulled it. And a fine layer of sand kept appearing on the sills, even on days when nothing had been opened.

If you live in Dubai, you probably recognise at least one of those. UPVC sliding systems are tough, but our heat, dust and the odd shamal storm work on the moving parts year after year. Brushes flatten. Rollers wear. Sand packs into the tracks. Eventually the whole window has to work harder to do something simple.

The owner didn’t want new windows. The frames were in good shape. They wanted the ones they had to work properly again, and that is exactly what a proper repair and service is for.

Before any tools came out, we protected the home

Window repair is dusty work. Old brush seals come out packed with sand. Tracks hold years of grit. Lifting a sash out of its frame shakes loose everything that has settled around it.

So the first job in every room was protection. Sheets went down on the floor around each window and door. The kitchen worktop and sink were covered before we touched the window above them. Furniture near the openings was wrapped or moved clear.

It adds a little time at the start. It saves the family a full cleaning day at the end, and that matters more to most people than they expect.

The worktop and sink were covered before the kitchen window was opened up.
Furniture near the sliding door was wrapped so dust had nowhere to land.

What we found when we checked every window

We went through the house one opening at a time and tested four things on each: how it slides, how it locks, how it seals, and how it sits in the frame. A three minute walk-round tells you a lot. Then we lift the sash and look underneath, because that is where the real story usually is.

Choose a part of the window below to see what was wrong with it in this house and what we did about it.

Front view of a two panel UPVC sliding window showing its main parts

Brush seals

What we found

The brush pile around the sashes and interlock was flattened and matted with sand. In places it had pulled out of its groove completely, leaving gaps you could see daylight through. That is where the dust on the sills was coming from.

What we did

We pulled the old brush out of every sash and frame groove, cleaned the grooves, and fitted new brush pile cut to length. The sashes now close against a soft, even seal all the way round.

The broken guide at the top corner of this sash is why it rocked and rattled. A small part, but the whole sash depends on it.
Testing each window by hand before deciding what to repair and what to replace.
Worn brush at the centre interlock, a common source of dust and whistling.

The repair, step by step

Every house is a little different, but this is the order we worked in. It is the same order we use on most UPVC and aluminium sliding window services across Dubai.

  1. Protect the room

    Floor sheets, covers on worktops and furniture, a clear working area around each opening.

  2. Test and note every opening

    Slide, lock, seal and fit, checked on each window and door so nothing gets missed.

  3. Lift the sashes out

    Large glass sashes are heavy and awkward. The team used suction lifters to take them out safely and set them down on protected ground.

    Suction lifters give a safe grip on the glass when a sash comes out.
    Sand and grit packed into the bottom track and corners.
  4. Strip and clean the tracks

    Old brush out, tracks vacuumed and cleaned, drainage slots cleared so rainwater can get away.

  5. Replace or repair the sliding parts

    New mechanism where the old one was finished. Clean, adjust and service where it still had life in it.

  6. Fit new brush seals

    Fresh brush pile on sashes, frames and interlocks, cut to length and seated properly in the groove.

  7. Repair the locks

    Worn parts replaced, keepers realigned, every lock tested from inside.

  8. Rehang, adjust and test

    Each sash goes back in, gets its height and alignment set, and is slid and locked again and again until it feels right.

  9. Install the fly nets

    New fly nets fitted to the openings that needed them.

  10. Clean the frames and clear up

    Frames, sills and glass edges cleaned, protection lifted, and the room handed back the way we found it, only tidier.

Why we replaced the brush seals everywhere

The brush seal, sometimes called brush pile or weather strip, is the strip of fine bristles that runs along the edges of a sliding sash. It looks like nothing. It does a lot.

A good brush lets the sash slide while closing the gap around it. That gap is how dust, fine sand, hot air and traffic noise get into a home. Once the bristles flatten or fill with grit, they stop sealing. In Dubai that tends to happen faster than people expect, because the brush is fighting dust every single day.

When we pulled the old brush out of this house, a lot of it came out grey and solid with packed sand. You can see it in the clip below. The new pile went in clean, even and the right height for the profile, so it seals without making the sash stiff.

What years of Dubai dust does to a brush seal.
Fresh brush pile and replacement parts before fitting.
Seating the new brush along the edge of a sliding sash.

Sliding mechanism: what we replaced and what we repaired

When a sliding door feels heavy, people often assume the whole door has had it. Usually it is the parts underneath and on top of the sash, not the door itself.

On this job we split the work honestly. On some doors and windows the rollers and running gear were worn past saving, so we changed the sliding mechanism. On the others, the parts were still sound. They were just clogged with sand and had dropped out of adjustment over time. Those we repaired, cleaned and serviced instead. Replacing parts that still work only adds cost for the owner and does nothing for how the window feels.

The top guides got the same treatment. The broken one in the photo above was replaced, and the rest were checked so every sash runs straight in its top track without rocking.

Checking how the sash sits against the top guide.
Replacement guide in place at the top of the sash.

The hinged door got a look too

The house also has a hinged UPVC door. As part of the full service, its hinges were checked, cleaned and adjusted so the door closes square without dropping or rubbing on the frame.

Hinges carry the full weight of the door. A small adjustment stops it from dropping and catching.

Lock repairs: locks that actually lock

A lock that turns but doesn’t hold is worse than one that’s obviously broken, because you think you’re secure when you’re not.

In this house we found the usual causes. A keeper (the part on the frame the lock hooks into) had worn and moved out of line. An old lock gearbox had stiffened so much the handle barely moved it. We repaired and replaced the worn lock parts and realigned the keepers, then tested each lock from inside until the sash pulled in tight with one easy turn.

A worn keeper means the lock has nothing solid to grip.
The old gearbox, stiff and worn, after it came out of the sash.

New fly nets, so the windows can stay open

There is not much point in windows that slide beautifully if you can’t open them without letting mosquitoes in. Motor City has plenty of green space and water features nearby, and in the cooler months a lot of families like to open up in the evening.

We installed new fly nets on the openings that needed them. They sit on their own track, so the window can still be opened and closed without taking the net off.

One of the new fly nets in its frame.

Repair or replace? How to tell

We get asked this on almost every visit, so here is the plain answer. Most sliding window problems live in the moving parts, and moving parts can be changed. The frame is the part that decides whether repair makes sense.

Repair usually makes sense when

  • The frame is straight and the corners are solid
  • The glass is intact and the double glazed units aren’t misting inside
  • The trouble is sliding, locking, rattling or dust getting in
  • Replacement parts are available for your system

Replacement is worth discussing when

  • The frame is cracked, warped or badly discoloured
  • Glass units are fogged between the panes
  • You want better noise or heat performance than the old system can give
  • The same faults keep coming back after proper repairs

In this Motor City home the frames were fine, so repair was the right call. If you’re looking at the other column, we also supply and install new aluminium sliding windows and aluminium doors, and we’ll tell you straight which option suits your home.

Do your windows need a service? A one minute check

Walk round your home and tick anything that sounds familiar.

My sliding windows or doors…
Looking good so far

Nothing ticked yet. Even healthy windows last longer with a service once a year, ideally before summer.

Keeping sliding windows smooth in Dubai

A few small habits make a real difference between services. None of them take long.

  • Vacuum the tracksOnce a month, and after every dust storm. Use a narrow nozzle and get into the corners where sand collects.
  • Skip the oilOil and grease attract sand and turn into grinding paste. If something needs lubricating, a light silicone spray is the better choice.
  • Keep drainage clearThe small slots in the bottom of the frame let water out. Check them before the rainy months.
  • Don’t force itIf a sash sticks, stop and check the track. Forcing it is how guides snap and rollers jump off.
  • Book a yearly serviceRollers, brushes and locks wear slowly. A yearly check catches them before they become a bigger job.

Questions people ask us

Can UPVC sliding windows be repaired, or do they need replacing?

Most can be repaired. Problems with sliding, locking, rattling and dust usually come from worn rollers, guides, brush seals or lock parts, and all of those can be replaced. Replacement is only worth considering when the frame itself is cracked, warped or badly discoloured.

Why is my UPVC sliding door so hard to open?

The usual causes are worn or dirty rollers, sand packed into the bottom track, or a sash that has dropped out of adjustment. A broken top guide can also make the door bind. Cleaning the track and servicing or replacing the rollers normally brings it back to an easy slide.

How often should sliding windows be serviced in Dubai?

Once a year is a good rule for most homes. If you’re near open land, construction or a busy road, twice a year keeps sand from wearing the rollers and brushes too quickly.

Will window repair make a mess in my home?

Not if it’s done properly. Our team lays protection sheets on the floor, covers worktops and nearby furniture before starting, and cleans the frames and the area before leaving.

Can you just replace the brush seals or fix one lock?

Yes. You don’t need a full service to call us. We handle single repairs like brush seal replacement, lock repairs, roller replacement and new fly nets, as well as complete window and door services.

Do you repair aluminium sliding windows as well as UPVC?

Yes. We repair and service both UPVC and aluminium sliding windows and doors across Dubai, including rollers, locks, brush seals, handles and fly screens.

Which areas near Motor City do you cover?

We work across Dubai. Near Motor City that includes Dubai Sports City, Arabian Ranches, Dubai Studio City, Al Barsha South, Jumeirah Village Circle, Dubai Hills and DAMAC Hills.

Window and door repair near Motor City

This project was in Motor City, and we are regularly working in the communities around it.

Motor CityDubai Sports CityArabian RanchesDubai Studio CityAl Barsha SouthJumeirah Village CircleDubai HillsDAMAC Hills

More from our team

Watch the team at work

Real clips from the Motor City job, filmed on site by our technicians.

Checking the sash closes flush against the frame.
Making sure the door meets the frame evenly.
Servicing the window above the sink, with everything covered.
The result: one easy push, closed and locked.
Clean frames, no mess left behind.

Windows fighting you back? Let’s fix them.

Send us a short video of the window or door on WhatsApp. We’ll tell you what we think it needs and arrange a visit. Repairs, part replacements or a full service, the same careful way we did it in Motor City.

  • Working in Dubai since 2006
  • UPVC and aluminium windows and doors
  • Rollers, brushes, locks, guides and fly nets
  • Protection laid down before work starts
  • Frames cleaned before we leave

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