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Made in the UK

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40 Year Heritage

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Unique Patented Products

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Extensive Warranties

Classic home improvements built on future-proof technology

Continually investing in the best machinery, technology, and software has enabled us to remain at the top of the UK's timber window renovation industry for over 40 years. Our recognised industry-leading experts deliver authentic heritage craftsmanship, backed by next-generation technologies that guarantee compliance, safety, on-schedule delivery, and effective cost-management across all projects. Supported by our dedicated research and development department, we continue to lead the market with unique products and services tailored to discerning homeowners, architects and property developers.

A Ventrolla van

A culture of innovation

Relentlessly breaking new ground and thinking creatively is what sets us apart. After all, it all began with Ventrolla’s founder utilising skills from his previous job at Ford Motors to create the first perimeter sealing system for draught-proofing historic sash windows. Always looking forward, Ventrolla has a bright future ahead. Fusing our unrivalled experience and heritage with the latest technology, new Ventrolla products on the horizon include:

  • Smart sashes controlled by remote or smartphone app
  • ‘Secured By Design’ accredited timber windows
  • Augmented reality (AR) integration to visualise products in situ
  • A high-tech design studio to experience our innovative products in person
  • Much more coming soon…
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Dedicated research & development department

To achieve the new products and services mentioned above, plus much more, we have recently launched an exciting new Research & Development Department. An integral part of our thriving workshop, our determined research & development team has begun trialing and testing new product enhancements and developments to help us understand and accommodate evolving consumer needs.

Keeping an eye on the future, making sure our services and your property deliver the best possible value and sustainable longevity for generations to come is of paramount importance to us.

Get in Touch

Our Process



The Ventrolla journey begins with a discussion with a member of our team and/or a detailed home or site design survey, to explore your ideas & devise a bespoke plan of action.



Once our team have finalised the plans, we will provide a comprehensive estimate for your works. Enquiry to estimate typically takes between 5 and 10 working days.



Ventrolla fuse traditional skills with modern technology. If you require new joinery, creating your unique product begins in our UK-based manufacturing facility, and takes between 6 and 10 weeks.



The utmost care is taken to deliver quality products and renovation works that exceed our customers’ expectations. Varying from area to area, Ventrolla lead times depend on how busy we are, and the work required. On average, our installation team will be on site between 6 to 18 weeks from the date your order is placed. We will advise guide installation dates when you place your order.



Our customers come back time and time again – when they move or if they’ve phased their works – all thanks to our exceptional customer service and after care. In the unlikely event that your Ventrolla products require expert attention, we’re always on hand.



Renowned for delivering outstanding quality, all our work comes with a minimum 5-year guarantee (subject to terms), for absolute peace of mind.

What our customers are saying

Ventrolla were able to beat all the other quotations that I received and answered queries quickly and informatively, making changes as required promptly and without fuss. I was kept informed throughout of lead times and manufacturing times. The real stars of the show were Rob and James who worked tirlessly and brilliantly as a team to repair sash boxes where required and install our new sashes. Thank you!


Everybody I dealt with has been super friendly, informative, and helpful. I received emails with updates on what was happening, etc. It has been a great experience from start to finish.


I used Ventrolla to renovate my sash windows over to years ago. When two of them finally collapsed, including a bay window the size of three full sized Georgian windows they were my first contact. The office staff, surveyors and the three fitters that did an amazing job installing them in less than two days were all excellent. The quality of workmanship and the standard of installation were first class, and the new windows look amazing. I will definitely be using them again as more of my windows will need replacing over the next few years.


This is the second property Ventrolla have restored my windows for me, and the this job was every bit as good as the first. 14 sash windows in a Grade II listed building installed/refurbed without a hitch in week. The team of 4 installers were lovely chaps, super efficient and tidy. All round another fabulous job done – thank you the Ventrolla Team


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