Endorsed by Which?

London Sash Windows & Doors Ltd

5.0

32 Reviews

Opening Hours
Today -
  • Monday 08:00–17:00
  • Tuesday 08:00–17:00
  • Wednesday 08:00–17:00
  • Thursday 08:00–17:00
  • Friday 08:00–17:00
  • Saturday - Closed
  • Sunday - Closed

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

About

We are a traditional Family Run business with over 20 years of direct manufacturing and installation experience .

Services & Products

Full Sapele Hardwood or Accoya Windows
Hand painted or spray finished windows & doors
Bespoke noise reducing sashes into existing frames
Heritage double glazing in new sashes fitted into existing frames
Draught proofing and overhaul existing timber windows and doors
Custom hand made joinery
Complete replacement windows and doors fitted or supplied
Ironmongery installation

Our Sash Windows & Doors are manufactured in North London.

All installation work completed comes with a
+ 10 Year Guarantee - T & C's apply
+ FENSA certificate for complete replacements -
T & C's apply
+ Insurance Back Guarantee for FENSA registered projects
+ Price match Guarantee

What we do

  • Double glazing

    • Double glazing installation
    • Double glazing repairs
    • Double glazing suppliers
  • Glaziers

    • Sash windows
    • Double glazing installation
    • Double glazing repair
    • Timber windows
    • Window consultants
  • Doors

    • French doors
    • Timber doors
    • Front door
  • More Services

    • draught proofing
    • hardwood windows

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

5.0
32 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Experienced, helpful and reliable
Customer Service
Quality
Value
We needed a new box sash window supplied and fitted in our rear bedroom, complete with pre-finished ironmongery and draught-proofing. Melvyn from London Sash Windows & Doors Ltd did a detailed inspection, took measurements, and gave us a competitive quote with full details of how the job would work, phased payment schedule etc. (including final instalment payable after job completion). All communications with the company were very friendly, timely and professional, and our work was completed beautifully to the agreed schedule and on budget. With very old and dried-out plasterwork around our old window, I appreciated Melvyn pointing out in advance that some extra plastering repair work MIGHT be needed once the job was complete. In fact, the friendly fitting team worked really hard all day on our job, and they managed to leave the surrounding wall - and the room itself - in a near-perfect state. Thanks to Roland and his colleague for the care they took. I was extremely pleased with this job and would definitely use London Sash Windows & Doors Ltd again.
Customer in Greater London Posted on 01/08/2023 , work completed 17/07/2023
Double Glazed Heritage Sash Windows Replacement
Customer Service
Quality
Value
I wanted to upgrade my old sash windows to double glazed. I live in a conservation area so was forced to only consider wooden sash windows. I chose LSW&B after getting a few quotes. They were one of the only companies that could fit double glazed sashes to existing frames. I chose them as the other quotes that I received were for whole new frames and were more expensive, would require more extensive work, plus would not be as slim as the replacement sashes from this company. After their survey, I contacted my local Council and was told I needed planning permission. The surveyor, Melvyn, from LSW&B helped provide drawings for the planning application in a timely fashion. Melvyn re-visited for a detailed survey once I'd obtained planning permission, and updated the quote. He held the prices from the original quote despite the 30 days having expired. The new sashes are simply stunning and the whole window now looks amazing. The team refurbished the existing box frames and double-primed all the wood, so it is weather proof until I can get it painted with a gloss finish. The sashes themselves are fully painted. Harry and the installation team were really professional, skilled, and courteous. They went the extra mile with protection of our property and with cleaning, which are areas where a lot of contractors have let us down in the past. We are also absolutely delighted with the quality of the new windows and wouldn't hesitate to recommend them.
Customer in Greater London Posted on 04/07/2023 , work completed 03/07/2023
Beautiful sash windows, friendly and considerate workmen
Customer Service
Quality
Value
As anyone buying property in London knows, the beautiful high ceilings and large windows that come with a period property also usually come with single glazing, constant rattling and rotting wooden frames. When it came to solving this issue my partner and I were keen to find someone who would quote us for restoration as well as full replacement. LSWD were able to provide an initial quote very promptly by email, followed by a more accurate and in-depth quote following an in-person visit. We opted to replace the sashes of our windows but restore the box frames themselves. They were very patient with us and our co-freeholders as we uhmed and ahhed over how many windows in the building we wanted doing, and not at all put out when it turned out our flat would be the only one. They were very clear and upfront about how long the whole process would take, and once the new sashes had been made the actual installation process was quick and pain-free (3 days to replace 4 windows with a team of two). The workmen who came to our flat were absolutely lovely; they cleaned up as they went and, if anything, left our flat cleaner than they found it. The windows themselves look fantastic - they were able to replicate the original style and match the interior paint colour very closely. I would highly recommend LSWD to anyone looking to restore or replace their timber windows.
Customer in Greater London Posted on 29/01/2023 , work completed 20/01/2023
Fantastic job
Customer Service
Quality
Value
The sash windows in my flat were in a terrible state - rotten and some of them falling apart. Stuart's quote to replace 7 windows was approx a third of another one that I had, and my tenants said that from the moment they met him they were impressed with his approach. In fact, in a message to me they said "The results are AMAZING, they've made a real difference. Also have to comment on how lovely and professional the team are, they've been a pleasure to have around."
Customer in Greater London Posted on 31/08/2022 , work completed 01/08/2022
Great job
Customer Service
Quality
Value
Genuinely great work by these guys. I had 6 sash windows refurbished and draught proofed. Stuart and the office were on it from the start, and most helpful. The team who came to do the work were punctual, courteous, pleasant, tidy, and just got on with it, and I'm very happy with the result. Thanks!
Customer in Greater London Posted on 10/03/2022 , work completed 04/03/2022
Quality Installation
Customer Service
Quality
Value
Fantastic no-fuss replacement of our front bay windows. London Sash Windows arrived exactly as planned and replaced our windows in a clean and tidy manner very efficiently. Clearly experienced, the fitters were polite and delivered a high-quality installation within the predicted time advised. I'd definitely recommend the service - our windows are looking great and the installation disruption was minimal - Many thanks.
Customer in Greater London Posted on 04/03/2022 , work completed 23/02/2022
Superb all round.
Customer Service
Quality
Value
I used London Sash Windows and Doors to replace some old timber sash windows. They were superb to deal with, from start to finish. The initial meeting was very efficient. They explained to me that it was not necessary to replace the complete window box, which led to a significant cost saving. The team that arrived on the day were friendly, got the job done swiftly and left my flat cleaner than when they arrived. The windows have substantially reduced noise, the flat is much warmer and my condensation issues are fixed. I wouldn't hesitate to recommend London Sash Windows and Doors to anyone.
Customer in Greater London Posted on 26/02/2022 , work completed 18/02/2022
Highly professional job with which I am completely satisfied at this point
Customer Service
Quality
Value
I needed double glazed sash windows fitted to replace existing sashes in a tall London Victorian house. The initial consultation was careful and supportive. I was advised well on what did not need doing as well as what did. In the end I had six sash windows replaced. A second visit was arranged to make precise measurements of what was required. The windows were manufactured in the firm's workshop, and they were then fitted on site over two short days by what seemed to me a very competent team. They were considerate of my needs, worked tidily, showed me and explained to me what they were doing and checked with me appropriately on the window furniture. The final result looked excellent and, to date, all the windows have functioned well. I would/will recommend the firm to friends. It was not cheap, but the quality of the work was high and I saw no reason to regret paying a substantial price for excellent work.
Tony in Greater London Posted on 25/02/2022 , work completed 17/02/2022
Sash windows in Victorian house.
Customer Service
Quality
Value
This was to double glaze four large front windows, also secondary glazing for a stained glass window and improving insulation for a side door. We are very pleased with the new windows which fit in perfectly with the look of the house. The work was done as agreed, the team who came were very pleasant, extremely hard-working and thorough and Stuart was always helpful. The only problem was an error with sizing the secondary glazing but this was remedied quickly. Overall very satisfied with this company.
Customer in Greater London Posted on 23/02/2022 , work completed 17/02/2022
Excellent work
Customer Service
Quality
Value
I'm delighted with the service given by Stuart and his team at London Sash Windows & Doors. The quote for replacing a sash window with a new double-glazed one in a frame which wasn't square was the most reasonable of three. Stuart was very helpful in providing the quote and answering questions, and the fitters did an excellent job in putting draught-proofing round the frame and then installing the new window. They worked extremely hard all the time without taking breaks, and did a wonderful job of vacuuming and clearing up when they had finished. I would strongly recommend this company.
Customer in Greater London Posted on 04/02/2022 , work completed 21/01/2022