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Rated 5 out of 5 stars

Great service. Aside from the undoubted quality of the product the installation team were extremely efficient and neat and importantly polite people that we were comfortable having in our home.

Rated 5 out of 5 stars

We had sash windows replaced in the ground floor bay, room above and bathroom, in a period property which has moved over the years, so nothing is straight, yet the finished finished product is fant... See more

Rated 5 out of 5 stars

We've used Acorn Sash Windows twice now - once to do retrofitted windows at the front of the house, and the most recent time to fit totally new sash windows on the back of the house. Both times, th... See more

Rated 5 out of 5 stars

Acorn were recommended to us by a neighbour. They replaced the sashes in two timber windows and also fitted a new casement window. Throughout the project, Dominic’s communication, advice and atte... See more

Company details

  1. Construction & Manufacturing

Information provided by various external sources

Acorn Sash Windows is a small, well-established, FENSA-registered company. We carry out free surveys and guarantee all types of work to sash windows throughout North London.


Contact info

4.9

Excellent

TrustScore 5 out of 5

71 reviews

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Rated 5 out of 5 stars

Great service

Great service. Aside from the undoubted quality of the product the installation team were extremely efficient and neat and importantly polite people that we were comfortable having in our home.

April 29, 2026
Unprompted review
Rated 5 out of 5 stars

120-year-old sash windows now look better than new

Acorn were recommended to us by a neighbour.
They replaced the sashes in two timber windows and also fitted a new casement window.
Throughout the project, Dominic’s communication, advice and attention to detail were really appreciated.
It was a pleasure to have Simon the fitter in our home for a week - he kept disruption to a minimum and left the place spotless.
And of course, his craftsmanship was amazing.
We’ll definitely use Acorn again if we need to, and have no hesitation in recommending them to anyone who’s looking to get similar work done.

February 13, 2026
Unprompted review
Rated 5 out of 5 stars

Excellent experience from start to…

We had sash windows replaced in the ground floor bay, room above and bathroom, in a period property which has moved over the years, so nothing is straight, yet the finished finished product is fantastic. The materials used are high quality, from the wood to the handles and finish, Dominic paid great attention to detail throughout, and thanks to the skilled carpentry and painting we now have snug, good looking windows.

Great communication, neat and tidy and pleasant guys to have in the house. A super-reliable local company – we’ll be getting the windows at the back done later this year.

February 2, 2026
Unprompted review
Rated 5 out of 5 stars

An excellent choice for your windows

This is a really reliable company with excellent service which I have used several times now (we have many windows!). The worker, Ionut, is really good at his craft, meticulous, tidy, very friendly, very good at explaining why problems arise with sash windows and always goes the extra mile with the work. We felt completely at ease to trust the guys with the house every time. We have had horrors from cowboy tradespeople in the past so it is a great relief to be able to rely on Acorn. Thanks guys!

October 15, 2025
Unprompted review
Rated 5 out of 5 stars

Excellent experience from start to finish

Although it wasn't the biggest job - fixing a broken sash cord and getting some stuck sash windows to open properly again I was really impressed by the work of the Acorn team. From the survey and quotation process through to the work itself, I felt they all cared about the job and also delivered the work to a high standard.

I was particularly grateful for their flexibility - not making me so more than I wanted to the windows - whereas some other companies seemed much more keen to only offer certain options such as draft proofing which weren't necessary.

August 26, 2025
Unprompted review
Rated 5 out of 5 stars

Rare to find company that delivers to the max.

A company dedicated to delivering high quality customer services:reliable,approachable, true to their word, punctual, pristine workmanship, affordable, respectful of customer and home, brilliant communication. Acorn sash windows is the whole package. Dominic and his team- refreshing to find a company that does what they do simply and to a high standard. An absolute delight to work with you.

July 28, 2025
Unprompted review
Rated 5 out of 5 stars

We chose Acorn since they were local to…

We chose Acorn since they were local to the area, recommended on Haringey Online and are delighted with their work. We asked for double glazed wooden sash windows to be in keeping with the house. Dominic explained clearly and patiently what the work included, we were given a clear programme of working dates, which was kept to despite the vagaries of weather, communication was excellent, texted if delayed, work looks great and we have windows that open and close smoothly after 40 years of not having that!Rotten sills were also replaced. Lots of compliments from the neighbours

May 27, 2025
Unprompted review
Rated 5 out of 5 stars

Brilliant

We've used Acorn Sash Windows twice now - once to do retrofitted windows at the front of the house, and the most recent time to fit totally new sash windows on the back of the house.

Both times, the experience was incredibly positive - the team responds quickly to queries and everyone is friendly, polite and tidy. They do everything they can to make sure what you're getting is what you wanted and the windows they put in are beautiful. Their pricing is competitive too. Wouldn't hesitate to recommend them.

February 5, 2024
Unprompted review
Rated 5 out of 5 stars

Great quality product and professional service

This is the 3rd time I have used Acorn sash windows. This was the biggest project yet, with 13 windows upgrades with double glazed sashes. I was able to retain the original look of the windows but without the rotten rattling windows I had before

July 13, 2023
Unprompted review
Rated 5 out of 5 stars

Excellent service and window installation

After approaching several sash window companies, I decided to work with Dominic and his team at Acorn Sash Windows. The quote stage was detailed and Dominic took time to evaluate the condition of our sash windows to make an accurate quote while also taking time to answer the many questions I had. The installation process was efficient, clean and well organised. The team took the time to cover everything to minimse the mess and dust and left everything clean and tidy. Overall, the result was wonderful and we are very happy with the final result. I would highly recommend Acorn Sash Windows to anyone looking to replace their sash windows.

March 15, 2022
Unprompted review
Rated 5 out of 5 stars

Excellent from start to high quality finish

Excellent from start to finish. Acorn did a thorough assessment and spec for the work before the quote, and then let me know what to expect and when with a clear work plan and costs. The work itself went to plan and was done by good people to a high quality finish. Very happy to recommend them highly.

February 7, 2022
Unprompted review
Rated 5 out of 5 stars

Dominic and his team provided an…

Dominic and his team provided an excellent service through difficult times. There were delays but we were always kept informed of the reason and the new timings. The team was professional, friendly and helpful. The few minor snags were quickly and effectively dealt with. The quality of the work and fittings were excellent.

September 11, 2021
Unprompted review
Rated 5 out of 5 stars

From the outset we were impressed with…

From the outset we were impressed with the very conscientious and efficient approach to the work that Dominic demonstrated.All elements of the work were very clearly explained both verbally and via email.We were given a very helpful timetable for the work that was to be carried out each day and by whom which enabled us to prepare each room in advance.
The team worked hard.Their workmanship was of a very high standard.They were all polite, friendly,and respectful.They cleared up really well after each job.
Afterwards we needed a small adjustment to the hanging of the new door and also a replacement latch for one of the windows.Dominic responded promptly and came to resolve these issues without problem.
We are extremely pleased with all of our lovely new double glazed windows and door!They look great and definitely significantly reduce noise and cold!
We would not hesitate to recommend Acorn windows for good value, expert craftsmanship, and great service.

September 5, 2021
Unprompted review
Rated 5 out of 5 stars

Really happy

Ionut arrived on time, did an painstaking and very professional job, and cleaned up after himself beautifully. The window (replacement sashes in an upstairs bedroom) looks very well made.
We had some new sashes installed by another local firm a few years ago, but the Acorn ones are far better fitting and higher quality.
Highest recommendation for all aspects of my experience with Acorn, from job booking, communication of the date, the job itself, and the aftercare.

August 23, 2021
Unprompted review
Rated 5 out of 5 stars

Excellent work

Acorn Sash Windows did an excellent job on replacing the sash windows in my front room, French doors to my kitchen and some very large French doors to my bedroom. I was impressed by their professionalism from the beginning and the quality of the work is superb. They brought in specialists for each aspect of the work and each one was reliable , and polite, and they all left the flat clean and tidy at the end of each day.
I found them to be competitive price-wise but actually were way above any of the other contractors who I got to quote on the work in terms of their communication and professional approach.

June 16, 2021
Unprompted review
Rated 5 out of 5 stars

Highly recommended

Can’t fault the experience we had with Acorn. Dominic and all his staff were friendly and thorough. The communication throughout was very clear both verbally and in writing. The work itself was done so quickly and to such a high standard. The carpenters and painters were polite, friendly, tidy and flexible. Could not be happier with the finished product. Thank you so much!

June 4, 2021
Unprompted review
Rated 5 out of 5 stars

Restored sash window

Acorn did a fantastic job on restoring a sash window. They removed an old aluminium-framed window and installed new sliding sashes with new sash cords and pulleys. The result is great. The carpenter and painter both did an excellent job, and Dominic at Acorn replied to any queries very quickly. Highly recommend.

May 17, 2021
Unprompted review

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