Sash Windows London | Ventrolla The Sash Window Repair Company


We have window installation teams covering all areas of London offering sash window repair, draught-proofing, double glazing and new bespoke sash windows.

Sash Windows London

Our Ventrolla London team have repaired, upgraded and draught-proofed thousands of wooden sash widows across the capital from Enfield to Croydon, Hillingdon to Havering and every borough in between. Whether it’s rotten window sills, noise pollution from busy streets, heat loss through old thin glass or any other issue our teams can repair and restore your sash windows to their former glory.

Benefits of a Ventrolla Sash Window Repair:

  • Eliminate Draughts And Rattles
  • More Energy Efficient Sash Windows
  • Add Value To Your Property
  • Reduce Outside Noise
  • Ensure Smoother Operation

Our London team offer a personal and friendly service, working with homeowners and landlords to ensure they cover all our customers’ needs. It’s a team with a family feel and a wealth of window knowledge. 

On commercial projects their expert team of timber sash window specialists has many years’ of experience working alongside Architects, Main Contractors, Designers and Managing Agents, from refurbishment and performance upgrade projects, to full bespoke replacement of windows and doors.

They’ve even worked on an exciting list of celebrity homes! But we didn’t tell you that…

Ventrolla Sash Windows London - Terrace House with Bay Window
Make sure your sash window repair project is in safe hands. Our London team will ensure you're left with amazing windos and a great experience.
Ventrolla | Sash Windows London 
Unit 5 Peacock Industrial Estate
20 White Hart Lane 
N17 8DT

Why Choose Ventrolla?

We’re consistently rated ‘Excellent’ by our amazing customers

IT ALL BEGINS WITH A free, no obligation, SURVEY

It’s a very simple process to get your windows just how you want them & the initial stage is a free, no obligation, survey with one of our friendly experts.
It takes up very little of your time and is a no pressure, no hassle, no commitment way for us to give you a tailored quote for work.

To help us move on with your enquiry quickly & thoroughly please answer the following questions:

Some Completed London Sash Window Restoration Projects


Key Features: Commercial, Sash Windows, Public Building, Renovation, Ventrolla Perimeter Sealing System (VPSS), Georgian.

 Ventrolla has put its skills on public display by upgrading windows at an historic London Museum.

Housed within a Grade I listed 16th century manor house, Bruce Castle Museum in Tottenham contains local history collections and archives for the Borough of Haringey.


Key Features: Commercial, Sash Windows, Hotel, Renovation, Acoustic Glass, Victorian.

 Timber window renovation specialist, Ventrolla, has added a ‘touch of glass’ to London’s oldest hotel.

Most were in public areas such as the restaurant and tea lounge and have been fully draught-proofed and renovated as part of the project.


Key Features: Commercial, Sash Windows, Hotel, Renovation, Ventrolla Perimeter Sealing System (VPSS), Regency, Victorian. 

 Ventrolla checked in with a stylish boutique hotel in South Kensington to assist with a major restoration project. The company was appointed by The Kensington Hotel to restore the period wooden sash windows on the building’s front elevation.