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Rated 5 out of 5 stars

Mark did an absolutely superb job replacing a broken sash window and draft-proofing my windows. He was absolutely generous in offering to replace for free my catches on my sash windows which were old... See more

Rated 5 out of 5 stars

Mark inspired confidence from day one when he came to quote on replacing every one of our sash windows with hardwood/dbl glazed. The work carried out by he and Anthony was excellent and on schedule,... See more

Rated 5 out of 5 stars

We used LDN Sash Window Company to carry out a mix of refurbishment and double-glazed replacements at our offices - around 30 in total. Mark and Elliott who carried out the work were both excellent an... See more

Rated 5 out of 5 stars

Mark along with his colleague Elliott arrived on time as scheduled. Pleasant to have them both in the house. Mark kept us fully informed as the work undertaken as to arrival times and helpful on choic... See more

Company details

  1. Window Installation Service
  2. Carpenter
  3. Repair Service

Information provided by various external sources

We are a new and thriving sash window company in south west london, We cover all the london boroughs, We pride ourselves on being conservationists. We offer window refurbs, draught proofing to complete new windows! For a free no obligation quote, Please get in touch!!


Contact info

4.8

Excellent

TrustScore 5 out of 5

57 reviews

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Rated 5 out of 5 stars

At last, a great window company - A*

At last, a top quality and reliable window company at competitive prices.
I contacted Mark after a bad experience with a previous window company, to build and install double glazed wooden casement windows.
Communication was excellent throughout, the windows arrived sooner than expected, and the quality is superb: I live in a conservation area which requires exact specifications, and Mark was meticulous in ensuring all the fine details were perfectly reproduced.
Very pleased and Highly recommend - A*

19 February 2026
Unprompted review
Rated 5 out of 5 stars

Professional service from start to finish

Mark guided me through the process of ordering new timber french windows with knowledge and respect. His carpenters were in and out in one day and the finished doors look great. Highly recommended and would happy ask him to replace other windows and doors in my flat in the future.

14 October 2024
Unprompted review
Rated 5 out of 5 stars

Retro fitting eindows

Mark Rhodes did an excellent job retrofitting all our sash windows. He management of the project was very professional. He was very pleasant, personable and mindful of our plans and kept to all the timings he gave. The workmanship was excellent many thanks to Anthony whose diligence was amazing and faultless. Nothing was too much trouble for any of the team. I would recommend the company to anyone needing their windows replaced.

24 September 2024
Unprompted review
Rated 5 out of 5 stars

Great service and product quality

Great experience with Mark and the rest of the team at London Sash Windows. Great service and quality of product and beautiful to look at. Bespoke solutions offered. Would definitely use again, and recommend to all.

22 August 2024
Unprompted review
Rated 5 out of 5 stars

LDN Sash Window Company are brilliant.

LDN Sash Window Company are brilliant! Please use them. I called them, Mark turned up, I had quote emailed over, job date was confirmed, they turned up on the day and at the time they said. I had 4 new doubled glazed sash windows installed and they are just perfect. Anthony was our window fitter and he has been fitting windows for almost 20 years. Again he turned up on time, VERY clean and tidy and let me know which rooms he was going to be in next. All windows perfectly installed and look fab. They are all so professional, friendly, knowledgeable, smart, tidy, clean and I honestly I will recommend them to everyone.

8 May 2024
Unprompted review
Rated 5 out of 5 stars

Excellent installation

Mark, at LDN Sash Windows, provided a professional and an outstanding service, when installing a new sash window in our daughter’s flat.
The team were reliable, thorough and considerate and, as a result, we would not hesitate in recommending them unreservedly.

27 April 2024
Unprompted review
Rated 5 out of 5 stars

Definitely recommend

Mark and his team did a great job refurbishing our front sash windows to keep the draught out and retrofitting two rotten sash windows. Mark was really helpful on the initial visits to recommend the best options highlighting ways to save some mnoney, Elliot and Anthony were great when it came to completing the works, really happy with the results, quality of thier work is really high

2 February 2024
Unprompted review
Rated 5 out of 5 stars

Draught proofing review

They performed draught proofing on my window and did an excellent job, it has solved my issue. They are also very good at cleaning up after the job has been finished, would definitely recommend!

11 January 2024
Unprompted review
Rated 5 out of 5 stars

Fantastic company

Fantastic company, highly recommended. Mark and his team did a full refurb on my sash windows and draught proofed them all. I couldn’t fault their workmanship and attention to detail. They went above and beyond and nothing was too much trouble. My flat is so much warmer now.

16 November 2023
Unprompted review
Rated 5 out of 5 stars

Honest, good quality and competitive

We had the sashes in several windows and two sets of French doors replaced with double-glazed units. Mark was also kind enough to help us with a double-glazed skylight we have. He is a very decent and honest guy, his work is of a very high standard and his prices are competitive. We are very pleased we used him rather than any of the other sash window companies we spoke to.

14 August 2023
Unprompted review
Rated 5 out of 5 stars

Two new sash windows

We are delighted with our new windows. Mark Rhodes was at every stage courteous, informative and professional, inspiring confidence from the first time we met him. The work is of high quality, and was done exactly when and how he promised, leaving my flat scrupulously clean and even helping me to rehang my curtains. I recommend him and his company unresevedly.

12 July 2023
Unprompted review
Rated 5 out of 5 stars

Very pleased with new sash windows

Mark did a full replacement of 4 sets of Victorian sash windows, and did a really excellent job.

The new double glazed sashes looked completely in keeping with the building and the other (original) windows in it.

Work was high quality and service friendly and fast.

These sort of windows don't come cheap, but I thought Mark's quote was reasonable compared to others and good value for the quality of the product.

29 June 2023
Unprompted review
Rated 5 out of 5 stars

Excellent Customer Service

Mark Rhodes is a top guy to work with. Fast, efficient and delivers excellent customer service. He replaced all of our sash windows to a very high standard last year and installed double glazing. He came back this summer for a different window (one he hadn’t replaced) that was faulty and he did the job gratis as a gesture of good will. Highly recommend his services.

4 July 2023
Unprompted review
Rated 5 out of 5 stars

100% Recommended!

Mark inspired confidence from day one when he came to quote on replacing every one of our sash windows with hardwood/dbl glazed. The work carried out by he and Anthony was excellent and on schedule, plus they left the place spotless every day. Cannot recommend LDN enough and will be referring business wherever I can. We are very happy customers.

20 June 2023
Unprompted review
Rated 5 out of 5 stars

Stunning quality windows, first class customer service

We hired the LDN sash window co on the recommendation of a friend and I can honestly say it's one of the best renovation decisions we've ever made. We looked at lots of sash window companies, but LDN sash truly are an unbeatable combination of superb product, competitive price and brilliant customer service.
We had over 10 windows retrofitted and replaced on our Georgian property by Mark and Elliot who were highly professional: punctual, hardworking, courteous, tidy and fast.
We now have stunningly beautiful windows (no more ugly secondary glazing!) that keep out draughts, reduce noise and actually open!
I've already recommended Mark and his team to our neighbours because the whole experience from first communication through to final installation was exceptional.
Bottom line: They really care about doing a great job - go with them, you won't regret it!

18 May 2023
Unprompted review

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