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

Trusted heritage, nationwide coverage

The success of The Ventrolla Group has been built on customer recommendations and a reputation for outstanding quality. All our work is done to the highest standard, is guaranteed, and we promise to treat all our customers the way we would want to be treated. Read on to find out more about our customer promise.

With Ventrolla, you can always expect:

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1. Expert & unbiased advice

First and foremost, we provide honest advice and guidance based on over 40 years of experience. We typically allocate 1 hour for a survey, allowing plenty of time for an investigation of all your windows and to talk through the process without outstaying our welcome!

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2. A comprehensive support network

As members of the Glass & Glazing Federation (GGF), Ventrolla is committed to upholding and adhering to the code of conduct as set out in the GGF Vulnerable Peoples guidelines. This allows us to:

  • Identify consumers who may be vulnerable
  • Give extra support to help them make informed choices
  • Ensure vulnerable consumers understand important documents such as the quotation, the contract, and the guarantee.
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3. Less window rattles, draughts, leaks & noise

Our industry-leading repair and renovation techniques help to eliminate inconvenient rattles, draughts, leaks and noise problems, allowing you to retain the value and period charm of your sash and casement windows.

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4. No gimmicks or high-pressure sales tactics

Once your survey is complete, we will send you an estimate detailing each window and the proposed works, so you can take your time to consider our proposal (pressure-free), in the comfort of your home. Our service and workmanship speak for themselves, but if you have any further questions for us, we’re only a phone call or email away!

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5. A secure & weathertight building

Typically can renovate one window per day, dependent on the work required and the size of the team we send. If your home improvement works are scheduled to take several days, at the end of each day your home will remain completely secure and weathertight.

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6. A clean & tidy finish

Our installers will treat your home with the respect it deserves, taking every care to ensure the property stays as clean and tidy as they found it – including covering furnishings & carpets with dust sheets, using tools with dust extraction devices, and shoe covers, if requested.

Please note: Installers must wear safety shoes on-site at all times.

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7. Professional service with a smile

Rarely known to turn down a cup of tea when offered, our friendly team of Surveyors and Installers will be more than happy to explain anything further if required.

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8. Renovation over replacement

Preserving the unique heritage and charm of period timber windows and doors really is a priority to us. So, where possible (and not beyond economical repair or requested otherwise) we will always suggest renovation over replacement.

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9. We will respect your privacy

Ventrolla complies with all UK data laws and policies, so your personal data will never be shared with a 3rd party without your express consent (we sometimes ask customers to act as referrals for new customers) and we will certainly never sell your data. Read our Privacy Policy and GDPR Policy for full clarification.

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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