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

Experienced commercial sash window restoration contractors

At Ventrolla, we take great pride in making a real difference in a variety of commercial building refurbishment projects too. We work closely with architects, surveyors, building owners, and estate holdings, as well as housing developments and new build projects that require a flourish of period character whilst meeting modern-day performance targets.

Dedicated to exceeding your unique project expectations, we take great care to ensure every commercial project runs on schedule and to budget. From heritage hospital buildings to monumental listed structures and everything else in between, our aptitude for restoring old commercial buildings is second to none.

Commercial Services

What makes our commercial sash window renovation services stand out?

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Full commercial project management

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Award winning designs

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1,000,000+ window renovations

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In-house manufacturing

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Local expertise,
national coverage

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High performance commercial sash window renovations

Improving old commercial buildings is a delicate procedure that should only be tackled by seasoned specialists. We know better than most it can often be difficult to balance cost against the least intrusive way to improve the property’s appearance, especially if it’s a heritage building. So, you’ll be pleased to learn that when it comes to identifying, repairing, and replacing draughty commercial timber windows and doors, our knowledge and experience are unrivalled across the board. And in line with our customer promise, where possible, we will always suggest renovation over replacement.

With Ventrolla Commercial you can expect energy-efficient windows and doors that meet modern regulations fused with meticulous planning strategies, structured deadlines, detailed surveys, expert support with tenders, highly detailed specifications, and a real understanding of how project stakeholders work within the commercial world. Furthermore, if your commercial energy improvement measures require consent, e.g., listed buildings or properties located in conservation areas, we can take care of this too.

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Bespoke wooden sash windows for Listed Buildings

Whether it’s one window or 100 windows, our commercial sash window repairs and renovations are guaranteed to:

  • Eliminate draughts & rattling frames
  • Reduce carbon emissions & expenditure
  • Comply with the latest Building Regulations
  • Preserve historic buildings for generations to come
  • Heighten brand awareness
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Accredited commercial sash window specialists

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

  • BSI ISO certification
  • Contractors Health and Safety Assessment Scheme (CHAS)
  • The British Woodworking Federation membership (BWF)
  • British Safety Council Training & Certification
  • RIBA CPD Provider Network Membership
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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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