Two workers wearing gloves carrying and glass window
Two workers wearing gloves carrying and glass window

Find professional window sash replacement services in Central London

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4.3

Excellent rating - 4.3/5 (9300+ reviews)

For your window sash replacement needs

  • Wood window sash replacement
  • Sash window repair
  • Vinyl window sash replacement
  • … or anything else
It only takes 2 minutes. And it's free.
Up to 50% cheaper than franchise dealers
No job too big or small
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Same day or next day service at no extra cost

Best rated window sash contractors near me

Recent Window Sash Repair reviews in Central London

Julien fixed the problem on the day- would highly recommend his services!

Unstick jammed sash window

£50

James did a great job of fixing a broken bolt on a sash window and did the job quickly and to a high standard Will definitely use again!

Fix the bolt on my sash window

£50

Great communication throughout and a decent job done on the sash window

Repair sash window cord

£100

Jason was a lifesaver, on time, incredibly diligent and a lovely person. Completed the task perfectly and showed up even with terrible weather conditions to make sure it was finished. I couldn’t recommend him enough

Removal and replacement of a sash window

£200

Repaired broken rope on sash window very efficiently/ replaced internal lock and painted door. Very happy with his work. Would call him again - great job!

Repair sash window

£50

Loved dealing with him he fixed the issue super quick!

My sash window doesn't fully close, the rope needs fixing

£100

low

£70

median

£90

high

£135

Low, median and high bar chart distribuiton

Average reviews for Window Sash Repair Services in Central London

based on 16 reviews

4.81

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What do window sash repair services include?

Our tradesmen can perform minor to extensive repairs for common window sash issues. Instead of a costly replacement, they can help restore and bring back your damaged sash windows to their original look and allow them to function properly for much longer. The process usually includes the pre-inspection, sash repair, and installation check. 

Booking with us for the first time? Here are some of the window sash repairs that we can help you with:

Wooden window frame repair

While wooden windows are often preferred because of their durability, they are also prone to rot due to moisture and dampness, which can be a major drawback. If you're already encountering small holes and cut damages on your wood sill or sash, book our window sash repair service as soon as possible. Depending on the severity of the damage, taskers may remove the rotted parts, use wood fillers or heavy-duty adhesives, and even repaint the frames. They can also apply natural preservatives to prolong the life of your wooden sash.

UPVC window frame repair

UPVC windows won't quickly rot and deteriorate despite being more affordable and lighter in terms of weight. However, you're still likely to deal with cracks, stubborn scuffs, and staining over time. Extreme damages are also possible from abuse and too much weather exposure. Our repair experts can perform almost any UPVC or plastic window frame repairs and restore the appearance of your sash as if it was brand new. If desired, they can also give it a whole new look without having to replace the entire thing.

Aluminium window frame corrosion repair

Untreated aluminium windows can easily suffer from corrosion. While it does sound doable, it's better to leave the corrosion repairs at the hands of a professional. Taskers can perform thorough aluminium window frame corrosion repair and identify the root of the problem. Using the right tools and equipment, they remove the dirt and corrosion without compromising the natural finish and repolish the corroded area. They can also apply organic or chemical treatments to prevent the same issue from relapsing.

Leaking window frame repair

Having a damaged, leaking window can be very frustrating and unbearable during heavy storms. Get in touch with our window sash repair experts as soon as you've seen water leakage in your frame before it leads to more costly repairs. They can help figure out where the seepage is coming from and apply treatments where possible. It depends on the complexity of the damage, but usually, they reseal, recaulk, or repaint your window sash. If the damage has already been affecting the structure of a window, then a window sill replacement may be a better choice.

Airtasker has over 17 window sash contractors in Central London, with an average rating of 4.81 stars from 16 reviews. Get in touch with window sash contractors such as Pawel S, Ryan O, and Brett B today to get a wide variety of Window Sash Repair jobs done. From Door Frame Fitting, Door Hanging, and Door Repair; you can get all types of Window Sash Repair done usually between £70-£135, with the median price of Window Sash Repair in Central London being £90.
Don't live in Central London? We also have window sash contractors available in London and East London available today.

Recent Window Sash Repair tasks in Central London

Exterior sash window carpenter for repair of 1st floor window

£1,000

East Dulwich, Greater London, SE22

20th Oct 2025

replacement of the outer box, mouldings, facials and soffits (and maybe the guttering) of 1st floor sash window.

Repair sash window – fix or replace damaged sash cord

£120

Earl's Court, Greater London

17th Oct 2025

Repair sash window – fix or replace damaged sash cord One of my sash windows still opens and closes, but the left-hand sash cord is damaged or detached, and the counterweight inside the frame may be stuck. The tension feels uneven when opening or closing. The work should require: Remove the interior staff bead (thin strip of wood on the left side holding the lower sash in place) Take out the bottom sash carefully — lift it slightly, tilt it forward, and rest it down Open the access pocket on the side of the window frame (small painted-over panel about 10–15 cm tall, held by one or two screws) Retrieve the counterweight and attach a new sash cord (cotton or waxed nylon) Thread the new cord over the pulley wheel, reattach it to the sash, and rebalance both sides The window and glass are intact; it just needs the cord mechanism repaired and adjusted. Please bring the cord and tools.

Very good work on sash windows! A true expert!

Sash window fixing

£120

Finsbury Park, Greater London, N4

15th Oct 2025

I need someone to repair a wooden sash window where part of the frame/slide has rotted and is coming loose. Property is located in N7 Photos can be provided on request. Open to quotes depending on materials and repair work required.

Ryan did a fantastic job repairing my window. He was very knowledgeable, honest, and easy to communicate with throughout the whole process. Great experience — highly recommend!

Sash window repair

£200

Ratcliff, Greater London

4th Oct 2025

Sash window spring balance repair: I have a tilt-to-clean 1000x1300mm wooden spiral balance sash window from a 1990s building (SE16 5EE) that includes support bars to hold the window at an angle when tilted. The bottom half of the window was blown open into the tilt position in high winds a few weeks ago. I was able to rotate the sash back into the frame so it is vertical again. Now the left side is stuck open (about 4cm from the bottom) and won't slide up and down; the right side is fine. The tilt latches must have come undone to enable the wind to blow it open.

Fix broken sash window cord

£100

De Beauvoir Town, Greater London, N1

1st Oct 2025

Repair broken sash window cord and make good - may require bead to be re-caulked but painting will not be required.

Very easy to deal with. I’m a landlord so haven’t seen the work but my tenant is happy so I’m happy.

Repair sash window spring mechanism

£80

Highbury, Greater London, N5

25th Sep 2025

Spring mechanism of a sash window needs replacing and refitting (including buying the piece).

Repair French door and sash window

£1,500

Herne Hill, Greater London, SE24

12th Aug 2025

Looking to rectify water damages to the im window/ door framework

Fixing the lock for sash windows

£50

Spitalfields, Greater London

4th Jun 2025

The lock on the sash window is lose and therefore cannot lock the window securely. The lock may require replacing or repairing. I have a video that better shows the actual issue, but unfortunately I am unable to upload onto the app, but I can send it to you separately.

Good job with the Windows

I need help fixing a sash window handle

£35

Pimlico, Greater London, SW1V

30th May 2025

I need help fixing a sash window handle that has come off.

Sash window repair

£100

Upper Holloway, Greater London

22nd May 2025

We have a problem with both sash window in the room. They don’t open and apparently the issues are with metal spirals. Could you let us know roughly how much is the charge and availability? Regards,

Fix Stiff Wooden Sash Window (Needs Lubrication and Light Repair)

£50

Newington, Greater London

29th Apr 2025

One of my sash windows has become increasingly stiff and difficult to open and close. The window can still move, but it’s sticking due to friction along the side tracks, possibly from paint buildup and wear. I need someone to: • Gently loosen the window if needed (without causing damage) • Lightly sand or clean the sliding tracks if necessary • Lubricate the sash tracks (preferably with a dry silicone spray, not oil-based lubricants) • Check the sash cords for basic condition (no need for a full replacement unless necessary) • Make sure the window slides smoothly again without excessive force Important: • No heavy force or removal of the window needed — it still moves. • Please bring your own tools and materials (fine sandpaper, silicone spray, etc.) • Care needs to be taken not to damage the paintwork unnecessarily.

Ed did a fantastic job fixing the sash window pulley system. He was efficient, knowledgeable, and went above and beyond to make sure the problem was fully resolved. His attention to detail and willingness to go the extra mile really stood out. Highly recommend his services!

Repair sash window cord

£60

Brownswood Park, Greater London, N4

16th Mar 2025

Looking to have cord repaired which has snapped on sash window, only on one side

Mark did a fantastic job with our window and was incredibly easy and pleasant to work with. Would highly recommend!

Repair top half of sash window which drops

£60

Shacklewell, Greater London

12th Dec 2024

Top half of one sash drops slightly so window can't be locked

Great. Professional and would recommend

Fix 2 sash window stops to window frame.

£50

Paddington, Greater London, W2

13th Oct 2024

I have bought 2 bronze barrel-style window stops to replace old ones, which now need screwing into a sash window frame. It should be straightforward. You can see from the photos we had to remove old ones because we lost the key so the new holes will go under the circles you see in the photos. It should involve drilling 2 holes and screwing the barrels into the frame so that the stopper can prevent the window from opening past a certain point. I’ve also included a photo of another window to show you what it will look like when complete. Thanks

Ismael was very prompt and managed the job quickly and efficiently. Very friendly.

Fix Broken Sash Window Mechanism

£75

Hackney, Greater London, E8

3rd Oct 2024

This is a Victorian flat conversion building so the windows have the old sash frame + front glazing, both of which should be able to slide up and down to open, one side has broken/got out of sync with the mechanism, so one side is stuck and one side is permanently open. Please note I can only pay the amount if the window can be fixed

Repair sash window cord

£100

De Beauvoir Town, Greater London, N1

15th Aug 2024

The sash window cord has broken on an old Victorian window. I have replacement cord but it needs someone who is familiar with repairing these types of windows to do the actual repair

Great communication throughout and a decent job done on the sash window

My sash window doesn't fully close, the rope needs fixing

£100

Upper Clapton, Greater London

13th Aug 2024

one of my sash windows doesn't close anymore when I pull it down, it gets stuck around 10cms above the close, and it's because one of the 2 ropes holding it up that normally slides up and down on the little metal ring is blocked and not moving anymore. As in, when I pull the window up the rope doesn't slide up inside the hole but just hangs in the air, and when I pull the window down it just gets stuck. There is another, less important issue with the secondary glazing of the other sash window: when I open the secondary glazing of the other window, it doesn't hold up tight but slides down, meaning it's impossible to keep it halfway open, but only opens by one third or so, as it slides down. This second issue is not really a major problem though, so even just fixing the first one would be great

Loved dealing with him he fixed the issue super quick!

Replace snapped sash window cords

£115

Maida Vale, Greater London

9th Jun 2024

Replace snapped cord on old sash windows

Fix the bolt on my sash window

£50

Canonbury, Greater London

12th Mar 2024

The bolt on a sash window in my house has broken so the window is permanently open, I have bought a new bolt to replace it but need this attaching. I also have a couple of bathroom doors that aren't closing properly due to faulty handles that it would be good to have looked at too

James did a great job of fixing a broken bolt on a sash window and did the job quickly and to a high standard Will definitely use again!

Rotten sash window

£1,600

Streatham Hill, Greater London, SW2

16th Feb 2024

The bottom 1/4 of a large sash is rotten through. So it needs to be cut out and replaced. I will be able to post some pictures tomorrow. Attached is a picture of the style of sash