Single glazing repair.
For windows and doors that are cracked or damaged, our bespoke like-for-like replacements provide enhanced thermal and acoustic performance without the need to replace your frames.
Glazing performance upgrade
Glazing performance upgrade
Experience the luxury of energy-efficient double glazing and vacuum glazing without sacrificing the characterful charm of your heritage windows.
Slim double glazing.
Our slim double glazing matches the efficiency and security performance of modern uPVC windows while preserving the original profile and style of your period windows.
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Slim profile
Designed with narrow glazing bars between glass panes, it fits seamlessly in heritage frames without extensive modifications.
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Enhanced energy efficiency
Reduces heat loss in winter and minimises heat gain in summer, delivering exceptional thermal performance throughout the year.
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Superior sound-proofing
Weakens sound waves for a more peaceful indoor environment, ideal for properties in busy urban areas.
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Conservation compliant
By working closely with planning authorities and conservation officers, our slim double glazing adheres to the highest standards of authenticity and compliance.
Vacuum glazing.
Vacuum glazing offers a modern solution for improving energy efficiency without compromising the architectural significance or heritage value of the property, making it easier to obtain regulatory approval for renovation projects.
We’re proud to partner with FINEO, a leader in high-performance vacuum glazing.Its revolutionary glazing units deliver outstanding thermal efficiency in an ultra-slim profile, perfectly balancing modern innovation with heritage aesthetics
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Preserves architectural integrity
Vacuum glazing authentically resembles traditional single-pane windows and can be retrofitted into existing timber sash windows. It also protects interior furnishings from damage caused by UV radiation and temperature fluctuations.
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Enhanced energy efficiency
With U-values as low as <0.7W/m2K, vacuum glazing uses an advanced fenestration technique that outperforms other insulated glazing methods, including triple glazing. By minimising heat transfer, vacuum glazing helps regulate indoor temperatures more effectively, reducing the need for heating and cooling systems.
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Perfect for large-scale projects
The ideal choice for buildings with extensive glass facades, effectively maintaining optimal indoor temperatures. Toughened as standard with no expansion or contraction.
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15-year warranty
Vacuum glazing has a 15-year warranty, but you can expect it to last over 25 years.
Secondary glazing.
Our secondary glazed units add an extra layer of soundproofing and heat retention without the need to replace your traditional windows. Ideal for windows that cannot be replaced or significantly altered.
The journey
A partnership of preservation from beginning to end.
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Comprehensive assessment
Our experts conduct a thorough assessment of your windows and doors to identify potential gaps and areas of improvement.
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Bespoke solutions
Based on the assessment, we provide tailored solutions to address specific sealing needs, ensuring maximum effectiveness.
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Handcrafted in our joinery house
Our skilled technicians upgrade your glazing, ensuring a seamless integration that complements the existing architecture.
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Quality assurance
Ventrolla is committed to delivering excellence. Our glass undergoes rigorous quality checks to guarantee optimal performance and durability.
Projects
We subtly transform the UK’s most beautiful buildings for homeowners, architects and property developers.
View projects for
Preserving a historical British chocolate-box village.
When the timber windows of 50 heritage properties began to show inevitable signs of ageing, such as rot and draughts, Bournville Village Trust turned to Ventrolla to sympathetically restore and renovate each window to its former glory.
Subtly transforming a historic schoolhouse.
For over a century, King Edward VI Handsworth School in Birmingham has stood as a symbol of educational excellence and architectural grandeur. Its 73 stately sash windows have long framed the school’s vibrant learning environment. However, time had diminished the windows’ original splendour, and the building failed to meet modern efficiency standards.
Bespoking sash windows for a 200-year-old Georgian home.
With a vision in mind but little more than the skeleton of a building, homeowners Louis and Haley turned to Ventrolla to bring their timber sash windows back to life during their extensive renovation project.
Reviving heritage: the Andersons’ journey with Ventrolla.
For Mr. and Mrs. Anderson, the windows and doors in their beautiful Grade II listed home needed to balance functionality with their passion for heritage preservation.
Charming Chorlton: a double-glazed home transformation.
Chorlton House is a stunning five-storey Edwardian semi-detached home that beautifully marries original features with Scandinavian inspiration
Crafting bespoke sash windows for a 200-year-old Georgian home.
Fifteen timber sash windows. Each combining traditional craftsmanship with modern functionality while preserving the original features.
Restoring an iconic hospital façade.
On Nuttall Street in Hackney stands the venerable St Leonard’s Hospital, a Grade II listed building steeped in rich heritage. Our project was to breathe new life into 160 of its distinguished sash windows, each a silent witness to the hospital’s heroic past.
FREQUENTLY ASKED QUESTIONS
01
How long will the renovation last?
With proper maintenance, our restoration work is designed to last for many years. We also provide a 10 year guarantee for peace of mind.
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Do you use sustainable materials?
Whenever possible, we use sustainable and ethically sourced materials.
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Do I need to replace my sash windows to make them energy-efficient?
No, our renovation and draught-proofing system enhances energy efficiency without the need for replacement.
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I live in a listed building / conservation area – can you work on my windows?
Yes. We often work on listed properties and those within conservation areas and work closely with conservation and planning officers, English Heritage, Historic England, Historic Scotland and Cadw.
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Will renovation reduce outside noise levels?
Noise is subjective, but our Secondary Glazing systems and the Ventrolla Perimeter Sealing System (draught proofing) have been independently tested and proven to significantly reduce sound intrusion.
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Is it possible to install double glazing into my original sash windows?
This depends entirely upon what type of window you have, however we have developed a service that will more than likely meet your requirements, namely by replacing your existing moving sashes with new, slim double glazed (or even vacuum glazed) replacements.
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How long will my window renovation take?
The time taken will vary depending on the survey result. Typically we work to renovate one window per day, although this can be adjusted to suit your requirements.
Get in touch
Enhance your building’s character, value, and efficiency.
For an expert consultation, condition report, and estimate – or for bespoke advice or brochure requests – please get in touch: