London Sash Works Limited
GUILDFORD
Checkatrade member since August 2022
Services
- Windows and Doors
- Window Fitters
- Loft Windows Installation
- Patio Doors Installation
- Wooden Sash Windows Installation
- Timber / Wooden Windows Installation
- Exterior Doors Installation
- French Doors Installation
- Secondary Glazing
- Bay Windows Installation
- Draught Proofing
- Stable Doors
- Timber / Wooden Doors Installation
- Timber / Wooden Windows Repair
- Timber / Wooden Doors Repair
- Double Glazing Installation
- Bay Windows Repair
- Wooden Sash Windows Repair
- UPVC Doors Installation
Customer Reviews
Write a review9.97 /10
Based on 23 reviews over the past 12 months
Quality of work
9.91
Reliability
10
Communication
10
What customers are saying
AI-generated from customer reviews over last 24 months
This trade is highly recommended by customers for their professional service and excellent quality of work. The team is consistently described as polite, punctual, tidy, and great communicators from quotation to completion.
Was this helpful?
Checkatrade is not responsible for the summary or the opinions in it. For more information, please read the reviews themselves and learn more in our reviews policy.
Reviews (448)
10 Excellent job!
Posted 22 January
I had a single paned bathroom window replaced with a double glazed window. There were clear timelines and communication was excellent. The new window looks great and I’m very pleased with the overall result. The tradesman was polite and mindful to clean up after every day. I would definitely recommend this company to friends and family.Verified reviewerJob location: SW17- AAarti V
10 Installation of new timber sash windows and refurbishment of existing frames
Posted 18 January
Job location: KT2We are absolutely delighted with our new sash windows! The quality of the windows is excellent and they have made a huge difference to both the appearance and comfort of our home. Adam and his team were thoroughly professional, knowledgeable, and a pleasure to deal with throughout the whole process. We were informed and updated every step of the way throughout. Installation was carried out efficiently and with great care, leaving everything clean and tidy. We wouldn’t hesitate to recommend London Sash Works to anyone considering new sash windows – keep up the fantastic work! 10 top class team
Posted 31 December 2025
Top class outfit. Great guys. No drama. Top notch work. Better than the bigger companies.Verified reviewerJob location: SW109.67 Delivered to plan
Posted 23 December 2025
Adam and the team did a great job from start to end. The communication throughout the process was frequent and clear.Verified reviewerJob location: SW1710 Highly recommend
Posted 18 December 2025
excellent window job from adam and his team. they replaced and refurbed 10+ windows in our victorian terrace and were extremely reliable, professional and hard working. we very happy with the finished jobVerified reviewerJob location: SW1110 Window and door replacement
Posted 04 November 2025
Job location: SW12We've just LSW four times replacing different windows and doors around our house. We've always found them hard working, polite and price competitive. We'd be happy to recommend them.
Photos
Company Info
Owner
Mr Adam Vanstone
Ltd Company
4 years on Checkatrade
VAT Registered
Yes: 178831958
London Sash Works Ltd is a family run business, operating in London and Surrey. We have been proud members of Checkatrade for 14+ years.
Both commercial and domestic jobs undertaken.
We provide a full range of restoration and replacement services for all timber sash and casement windows.
In addition to timber, we can also offer very high quality and attractive uPVC windows from 'Roseview' and 'Residence 9'
We pride ourselves on having a flexible approach, always trying to find the best overall package to suit each customer's pocket.
This week we are working in Teddington. If you would like to visit us at work and see what we do, please just get in touch.
There are many ways we can improve your timber sash windows.
Refurbishment
- Full refurbishment of sash openers and box frame
- Sill and lining replacements
- Repair / replace any rotten sections
- Draught proofing
- Re-glaze broken panes of glass
- Fit double-glazing units into original sashes
- Full decoration / painting both inside and out
Replacement:
If your original sashes are beyond restoration or your budget allows, we can fit lovely new timber double glazed sashes into the refurbished box frame.
We have the expertise to make exact replicas of your existing windows, no matter how intricate.
Complete replacements:
Either made to exactly replicate what you have already or made to your specification.
Beautiful new timber box frames and sashes that combine both a traditional aesthetic with modern efficiency.
Leave fully painted and finished inside and out.
Accreditations and awards
This trade passed up to 12 Checkatrade vetting checks
Member since August 2022
Individual checks
Identification
Proof of address
Financial
Qualifications and accreditations
County court judgement
Open source media
Business checks
Customer Reviews
Company trading history
Company duplication
County court judgement
Enhanced business check
Director checks