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

21st Century precision fused with traditional, handcrafted expertise

As 21st Century Traditionalists, our UK workshops use the latest machinery and the finest materials, whilst staying true to timeless carpentry methods. Manufacturing our own timber windows in-house for over 40 years, the original combination of 'through' or 'solid' glazing bars coupled with classic craftsmanship is what set's our products apart from the rest.

With workshops based in Harrogate, Henley-on-Thames, and Lockerbie, manufacturing our window products in-house gives all parties involved complete control of the process from start to finish - from design to customisation and pricing to communication, we’re with you every step of the way.

frames at workshop

Bespoke period window designs,

Maintaining the highest standards time and time again, our team of joinery specialists can replicate any joinery design with ease and finesse.

Our classic period sash window features & optional extras include:

  • Unique draught-proofing system, included as standard – independently tested to withstand winds up to 71mph
  • Traditional details, such as heritage glazing bars & decorative sash horns
  • A classic sash weight & pulley system
  • Traditional box sash window frame and sill
  • Period casement window replacements
  • Bespoke single or double-glazed timber windows
  • Replica Georgian, Victorian and Edwardian window designs
  • Large-scale, miniature & unusually shaped made-to-measure timber windows – oval, circular, arched, hoppers – you name it, we’ve made it!
  • A variety of high quality period sash & casement window hardware
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A trusted team of craftsmen

Over the years, we have heavily invested in both machinery and skilled bench joiners. We’re thoroughly dedicated to our people and processes, and we’re trained and accredited by a variety of leading industry bodies and associations. The highest quality and performance is guaranteed with Ventrolla period windows and doors.

frames at workshop

Cutting-edge sash window factories in Yorkshire, Oxfordshire & Dumfriesshire

As market-leading timber sash window experts, our continual investment into the best machinery, technology, and software enables us to remain at the top of the UK’s timber window industry. Relentlessly breaking new ground and thinking creatively, our streamlined Harrogate workshop includes:

  • 16,000 sq.ft workshop
  • An impressive collection of modern & classical woodworking machinery, ranging from Tenoners to Spindle Moulders, and mortisers to band resaw – all on hand to make your bespoke products.
  • Impressive software that enables us to track the lifecycle of your order from start to finish.
  • A state-of-the-art glazing & spray-priming department.

We also have the provision to invest in a new CNC 4 sided planer to give us more flexibility in terms of throughput, quality control, and quick setup times…

frames at workshop

So – what do our Workshops do exactly?

  • On average, workshop teams contribute to over 100,000 renovation projects per year, nationwide.
  • Using the information gathered by our surveyors in your home, our team produce the required joinery using detailed drawings and/or templates (for more complex shapes and projects).
  • We train all our teams in-house, in our workshops, and we’re soon to launch our own design studio and training academy to help the next generation get Ventrolla accredited and join our ever-growing team.

Whether you’re a homeowner, installer, architect, or developer, you will always receive a warm welcome with a visit to your nearest Ventrolla factory.

Request an Estimate

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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