Nationwide Coverage

uk icon

Made in the UK

40 year icon

40 Year Heritage

unique icon

Unique Patented Products

warranties icon

Extensive Warranties

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


Preserving Heritage with Timeless Craftsmanship and Modern Innovation

Welcome to Ventrolla, your premier destination for sustainable retrofit solutions! We are thrilled to announce our sponsorship of The Building Centre Retrofit 24 event, showcasing our commitment to driving innovation in the built environment. As leaders in window restoration and preservation, we offer cutting-edge solutions that go beyond mere renovation, empowering building owners to enhance energy efficiency, preserve architectural heritage, and reduce carbon footprints. Join us in revolutionising the way buildings are retrofitted for a sustainable future. Explore our services and discover how Ventrolla can transform your space while making a positive impact on the planet.

We are your premier destination for window solutions that blend traditional craftsmanship with cutting-edge technology. With over 40 years of expertise, we specialise in crafting bespoke timber wooden windows that honour the architectural integrity of your building while embracing modern sustainability standards. Our in-house manufacturing process ensures meticulous attention to detail, resulting in windows that seamlessly replicate the originals, preserving your property's timeless charm. But that's not all – if your current timber windows are showing signs of wear, our industry-leading renovations, featuring our patented perimeter sealing system, can revitalize their performance, eliminating draughts, rattles, and inefficiencies. Trust Ventrolla to deliver unmatched quality and expertise for all your window needs, ensuring lasting comfort and style for years to come.

Stylish looks, exceptional performance

What makes our timber wooden windows unique?

High quality fixtures and fittings

Bespoke shapes & sizes

solar icon

Advanced draught proofing technology

colour icon

40 years experience

van icon

Local expertise, national coverage

Get in touch

Embrace the Future of Sustainable Window Solutions with Ventrolla

Welcome back, and thank you for visiting Ventrolla’s stand at The Building Centre!

At Ventrolla, our mission is not only to enhance the aesthetic appeal of your property, but also contribute to significant energy savings and environmental sustainability. Our advanced designs and cutting-edge technologies ensure that your property remains stylish, efficient, and eco-friendly for years to come.

What sets us apart is our unwavering commitment to quality and innovation. Our windows are crafted from the finest materials, meticulously designed to seamlessly replicate the originals while delivering unmatched performance and durability.

With Ventrolla, you’re not just getting windows – you’re getting peace of mind. Our low-maintenance solutions require minimal upkeep, allowing you to focus on enjoying your space without the hassle of constant maintenance.

And when it comes to installation, our experienced team ensures a seamless and hassle-free process, so you can start reaping the benefits of your new windows in no time.

So why settle for ordinary windows when you can have extraordinary ones? Invest in Ventrolla today and transform your property through improving energy-efficiency , sustainability and overall aesthetics.

Find Out More
Torrdarach House

Casement Window: Heritage Double Glazing

Contact Us
Sash windows in White with double glazing

Sash Window: Bespoke Single Glazing

Contact Us
sash window

Sash Window: Vacuum Glazing

Contact Us

Vacuum Glazing

Introducing Vacuum Glazing: Revolutionising Window Technology

Experience unparalleled comfort and sustainability with Vacuum Glazing – setting new standards in thermal performance and energy efficiency.

Contact Us

Features & Benefits of Vacuum Glazing

Key Features:

  • More comfort: Enjoy a cosy indoor environment year-round with superior insulation.
  • Thin and Light: Despite its impressive thermal properties, Vacuum Glazing remains thin and lightweight.
  • Low Carbon emissions: Reduce your carbon footprint and contribute to sustainable development.
  • Sustainable development: Vacuum Glazing is an eco-friendly choice, fully recyclable and lead-free.
  • Advanced fenestration technique: By enclosing two glass panes with a micro-thin gap, Vacuum Glazing eliminates air and gas to minimize heat loss through conduction and convection.
  • Unrivalled Thermal Performance: Achieve U Values as low as <0.4W/m²k, surpassing triple glazing and ensuring stable indoor temperatures.
  • Substantial Energy Savings: With reduced need for artificial heating and cooling, Vacuum Glazing helps you save on energy costs.
  • Perfect for Commercial Spaces: Ideal for buildings with high percentages of glass, such as schools and offices, Vacuum Glazing offers exceptional thermal insulation.


  • PassivGlas offers tempered glass as standard, ensuring high durability and up to 80% light transmittance.
  • Minimum thickness of 6.3mm and weight of 15kg/m², providing strength without bulk.
  • 15-year warranty and a life expectancy exceeding 25 years, guaranteeing long-term reliability.
  • No condensation under -60℃ and no expansion or contraction, ensuring consistent performance in extreme conditions.

Transform your space with Vacuum Glazing and experience the future of window technology. Say goodbye to draughts, condensation, and high energy bills – and hello to comfort, sustainability, and unmatched thermal performance.

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.