Nationwide Coverage

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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

Market-leading heritage window & door renovation company

Founded in 1983 by Robert Tunnicliffe, Ventrolla is soon to celebrate 40 years' of renovating, repairing, draught-proofing and replacing wooden sash and casement windows. Taking our name from the slightly warped portmanteau of 'Ventilation Control', Ventrolla’s founder utilised skills from his previous job developing specialised gaskets and seals at Ford Motors, creating the first perimeter sealing system for draught-proofing historic sash windows - and the rest, as they say, is history!

Ventrolla Features

Why is Ventrolla unique?

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Patented products

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Award winning designs

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700,000+ renovations

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In-house manufacturing

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Local expertise,
national coverage

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A history of quality wooden windows & doors

Designed to eliminate draughts, rattles and dust ingress, the Ventrolla Perimeter Sealing System (VPSS) was awarded the prestigious Design Council Award (Engineering Components) soon after its invention in 1986. Using strips of low-friction Weatherfin polypropylene pile to seal the gaps, this patented system, along with our innovative Sash Removal System (SRS), are still core heritage renovation products 40 years on.

With workshops based in Harrogate, Henley-on-Thames, and Lockerbie, manufacturing our products in-house gives our customers complete control of the process from start to finish – from conception to completion and everything in between.


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A reputation for exceptional customer service

The Ventrolla Group is an integral part of family-run, turnkey property solutions RFM Group. Truly invested in making the customer journey as smooth as possible, our team of trusted team craftsmen provides high-end traditional joinery for you and your project. Based across the UK, our passion, attention to detail, and customer service skills are unrivalled in every aspect.

To retain the integrity and quality of our products, all Ventrolla installers must complete a minimum of 6 months of training. This unmatched dedication to high-end service shines through in our many 5* Trustpilot reviews and word-of-mouth recommendations.

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Accredited sash window specialists

Not only are we an award-winning company, but we are also accredited by a variety of industry-leading bodies and associations. Ensuring quality and customer satisfaction, whilst mitigating risks, our company accreditations include:

  • FENSA Approved Installers
  • BSI ISO certification
  • Contractors Health and Safety Assessment Scheme (CHAS)
  • The British Woodworking Federation membership (BWF)
  • British Safety Council Training & Certification
  • CSCS certification
  • Constructionline
  • Builders Profile
  • FSC-certified® timber & Accoya® products
  • IPAF & PASMA training
  • NBS Plus Membership
  • RIBA CPD Provider Network Membership
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Local planning expertise, national coverage

If your renovation plans include altering your listed building, home or project in a conservation area or locations covered by an Article 4 Direction, consent may be required to go ahead. Historic features should be retained wherever possible using traditional skills, and this is where our team of experts come in. Our team of expert craftsmen understands every last detail regarding compliant heritage renovation works, including timber window & door repair, restoration and replacement. Furthermore, they are experts in the history, architecture, and geography of your local area, which is all considered in the estimate and workmanship.

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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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