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

Premium timber & aluminium window frames

Your windows do so much more than let light in. Windows allow the air to circulate and keep valuable warmth inside. Windows keep families safe and secure, whilst beautifully framing garden views for everyone to enjoy. So, when old timber windows have seen better days, handcrafted timber window replacements from Ventrolla meet and exceed all modern performance expectations whilst simultaneously retaining timeless period features bursting with elegance and character. Alternatively, minimalist aluminium windows are ideal for both historic iron and steel window replacement projects and modern new build projects alike.

Ventrolla Window Features

What makes our windows unique?

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Patented perimeter sealing system

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Award winning designs

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Range of styles, finishes & hardware

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In-house manufacturing

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Local expertise, national coverage

curved white sash window

Heritage timber window replacements

Exquisite, naturally insulating, last a lifetime

What are the benefits of timber windows?

With a choice of classic timber sash windows or convenient timber casement windows, whether you’re looking to refurbish or replace, you can look forward to:

• Superior thermal insulation
• Reduced environmental impact & removes CO2 from the atmosphere
• Significant sound reductions via our patented perimeter sealing system
• Listed building, conservation area & AONB compliance
• FSC certified hardwoods, softwoods & Accoya® timbers
• A choice of colours & anti-stain primer as standard
• The flexibility to update aesthetics as required (e.g. repaint)
• Single, double, & secondary glazing options
• Sympathetic period designs can increase property value
• A lifetime of enjoyment with the correct maintenance

Timber Windows
long aluminum windows

Slender aluminium window products

Minimalist, thermally sound, rust resistant

What are the advantages of aluminium windows?

With our attractive aluminium casement window installations, you can look forward to:

• Advanced thermal-break technology
• High strength-to-weight ratio; 3x stronger than timber
• Modern multi-point locking systems
• Premium aluminium frames
• Highly recyclable
• Limitless colour options, including authentic woodgrain effects
• Warp, fade & corrosion resistance
• Ultimate design flexibility, enhancing a wide range of property styles
• Double & secondary glazing options
• 45 years of enjoyment with minimal maintenance

Aluminium Windows
bedroom with large white timber sash windows

21st Century machining meets traditional handcrafted sightlines

Designed to eliminate draughts, rattles and dust ingress, the Ventrolla Perimeter Sealing System was awarded the prestigious Design Council Award (Engineering Components) in 1986. Using strips of low-friction Weatherfin polypropylene pile to seal the gaps, this patented system, along with our innovative timber sash removal system, are still core heritage renovation products 35 years on.
With workshops based in Harrogate, Henley-on-Thames, and Lockerbie, manufacturing our timber products in-house gives all parties involved complete control of the process from start to finish – from customisation to pricing and everything in between.

Timber Window Renovation

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.



Fusing traditional skills with modern technology, 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 manufactured products and renovation works that exceed our customers’ expectations. Depending on the project, our installation team will be on site between weeks 10 to 16.



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

Thank you very much for an excellent job, by some of the nicest, most professional builders I have had working here for three decades.

Mrs Schecter, Kensington

Excellent service from the fitters. Extremely impressed with their tools and equipment to carry out the works. Certainly knew what they were doing. A welcome change

Mr & Mrs Kukk, Whitby

We were most impressed with the speed of your reply, the sympathy you had with the building’s integrity, the quality of your demo kit and the attention to detail in your quote. You are an excellent advocate for your company.

Mary Sherwood

Hi Jarrod I refer to our recent telephone conversation and as agreed, attach hereto formal confirmation of my satisfaction with the works undertaken by your company. Ian and Lee are a credit to your business and from my discussions with them, I can tell that they really enjoy being part of the Ventrolla team.


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