Made in the UK
40 Year Heritage
Unique Patented Products
Extensive Warranties
Advanced acoustic & insulating secondary glazing for your Sash Windows
Preserving the unique heritage and charm of period timber windows really is a priority to us, which is why we offer industry-leading secondary glazing products as an alternative for listed buildings, conservation areas, and other properties subject to restrictive improvement regulations. Tailored to a wide range of property styles, we have over 35 years' worth of experience crafting and installing quality secondary glazing designed to enhance thermal efficiency and security and reduce noise pollution.
Secondary Glazing Features
What makes our secondary glazing unique?
Reduced noise levels up to 80%
Reduced heat loss up to 65%
Bespoke traditional & heritage styles
Custom fit to your property with care
Local expertise, national coverage
Preserve your building’s unique aesthetic with quality secondary glazing
Enlightening, discreet, warm & tranquil
Secondary glazing consists of a fully independent internal window fitted on the room side of an existing window.
This technique creates an extra layer of insulation, providing various advantages such as:
- Improved Thermal Efficiency: Secondary glazing significantly reduces heat loss, enhancing the energy efficiency of your home.
- Noise Reduction: Experience a quieter and more peaceful indoor environment by minimising external noise intrusion.
- Enhanced Security: Strengthen your window’s security with an additional barrier, offering increased protection against intruders.
- Preservation of Historic Windows: Safeguard the original features of your timber windows while enhancing their performance.
Made from lightweight, slender aluminium frames, enjoying the sunshine and making the most of far-reaching views, whilst preserving your property’s exceptional character, is a straightforward process with secondary glazing installations by Ventrolla.
Secondary glazing windows in two period-style ranges
Designed to seamlessly blend with the style of your property, our secondary glazing is purpose-built to suit all property and window types, and is available in six diverse variations;
- Horizontal Slider
- Vertical Slider
- Hinged Unit
- Fixed Unit
- Lift Out Unit
- Bespoke & Arched Units
Traditional Secondary Glazing Features
- Slim, discreet aluminium profile
- Minimal sightlines
- Easy access to primary glazing
- A popular choice with homeowners
Heritage Secondary Glazing Features
- Slightly thicker, heavy-duty aluminium profile
- Perfect for small to large-scale commercial installations
Our Process
Consultation
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.
Estimate
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.
Design
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.
Installation
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.
Aftercare
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.
Guarantee
Renowned for delivering outstanding quality, all our work comes with a minimum 5-year guarantee (subject to terms), for absolute peace of mind.
Frequently Asked Questions
I live in a listed building / conservation area / AONB - can you work on my property?
In these cases, secondary glazing is an ideal alternative. We have completed lots of work over the years on listed properties and those within conservation areas and Areas Of Outstanding Natural Beauty (AONB). Working closely with local conservation and planning officers, English Heritage, Historic England, Historic Scotland, and Cadw, you can trust in Ventrolla to reinstate and sustain unique architectural features whilst simultaneously heightening historical value too.
Will secondary glazing reduce outside noise levels?
Independently tested and proven to significantly reduce sound intrusion, our high performance secondary glazing can reduce noise levels up to 80% and heat loss up to 65%.
Do you offer an installation guarantee?
Yes, our work is guaranteed for 5 years.
What is the average cost of renovating a window with secondary glazing?
It all depends on how much work each window needs. For a more accurate estimate, please call us on 0800 0277 454 to arrange a free, no-obligation survey.
How long does it take to install secondary glazing?
The time taken will vary depending on the result e.g., your survey and the work we identify is needed. Typically, we work to a one-window-per-day time scale, although this can be adjusted, if necessary, to suit your requirements or our schedule.
Varying from installation to installation, our average timescale targets are
- Enquiry to quote: 5-10 days
- Quote to order: 30 days
- Order to installation: 10-16 weeks
Can you put secondary glazing on sash windows?
Yes, it is possible to install secondary glazing on sash windows. Secondary glazing involves adding a second layer of glazing to an existing window, creating an insulated airspace between the two panes of glass. This can help to reduce noise, improve energy efficiency, and increase security.
Secondary glazing is a popular solution for historic or listed buildings, where replacing the original windows may not be allowed. Sash windows can be particularly suitable for secondary glazing, as they often have single-glazed panes that can be easily upgraded with a secondary glazing system.
What is the lifespan of secondary glazing?
The lifespan of secondary glazing can vary depending on several factors, such as the quality of the materials used, the installation method, and the level of maintenance.
Regular maintenance can also help to extend the lifespan of secondary glazing. This may include cleaning the windows regularly with a non-abrasive cleaner, lubricating moving parts, and checking for signs of wear or damage.
It’s important to note that secondary glazing is not a permanent solution and may eventually need to be replaced. However, with proper installation and maintenance, secondary glazing can provide long-lasting benefits such as improved energy efficiency, noise reduction, and increased security.
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