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Granada Secondary Glazing
Superb solution for period or listed properties - or for where the very best sound insulation is demanded

Reduce Noise Levels by up to 80% & Heat Loss by up to 65%

Granada’s Secondary Glazing is Discreet, Durable and Functional. Secondary glazing is a stylish and cost effective way of increasing both acoustic and thermal performance. 

Homeowners install secondary glazing to combat 2 main issues, acoustic and thermal performance. The installation of secondary glazing boasts a great number of benefits and can be installed within all house types even Grade I and Grade II listed buildings. Our customers receive an 80% reduction in noise breaching the primary window and up to 65% reduction in heat loss.

Secondary glazing is often used in conjunction with single, double, and triple glazed uPVC or timber windows. Our products are manufactured in house at our 40,000 square feet manufacturing facility.

As our products are powder coated and manufactured all at one location by Granada Secondary Glazing, so we can ensure total quality, short lead times and the highest performing product available

Secondary Glazing Styles available

Made from durable aluminium and available in over 200 RAL colours our systems are discreet, functional and come with a 5 year warranty on frames and glazing and a 2 year warranty on moving parts.

The installation of secondary glazing within conservation areas is advised by Historic England as the installation does not change the original fabric of the building

Sound Insulation

Secondary glazing offers the most effective sound insulation – significantly outperforming double glazing. From noisy roads to noisy kids, our windows can reduce noise levels by up to 80%

Thermal Insulation

Substantially improves the thermal insulation of existing single-glazed windows – reduces heat loss through the window by around 65% – around 10% more than double glazing

Increased Security

Secondary windows offer an affordable, discreet, highly effective solution to enhancing building security. No external access is required, ideal for multi-storey buildings.


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Retain Character

As the Granada range is slim line and discreet it has been specifically designed for listed building windows, conservation areas and heritage properties.

Condensation Solution

Where condensation is a major issue, we often specify secondary glazing with balanced trickle ventilation. This provides a simple, cost-effective, and permanent solution.

Secondary glazing is now discreet and functional giving you access to your primary windows when cleaning or maintenance is required. Manufactured from durable aluminium our products provide years of robust, trouble-free service

Granada’s aluminium secondary glazing is available in over 200 RAL colours to suit all tastes and preferences. With a wide variety of window styles and speciality glasses we can cure your acoustic or thermal issue

Granada products not only provide excellent thermal and noise insulation, our choice of finishes and styles have a discreet, unobtrusive finish that is sympathetic to the surroundings and most existing window styles.

The full RAL range of Colours available

In addition to Standard Gloss White, the most popular choice, our Secondary Glazing is available in every RAL colour to order, plus this selection of popular RAL colours (which come without a set-up cost) including Black, Cream, Grey, Ivory and Off-White all Satin finished, plus Vandyke Brown (BS08B29, High Gloss), Magnolia (BS08B15, Satin) and Silver (AA5, Satin)

Granada Secondary Glazing Installations

Most Recommended Best Reviewed Window and Door Installer in South Wales

As Approved Granada Secondary Glazing Suppliers and Installers we offer supply and installation services throughout South Wales including Abergavenny, Crickhowell, Usk, Monmouth, Brecon, Chepstow, Cwmbran, Newport, Cardiff and Merthyr areas and beyond

Visit us
HERONHURST Window and Door Studio
18 Mill Street Industrial Estate, Abergavenny  NP7 5HE

Talk with us on Abergavenny 01873 877670
Cardiff 029 2000 1727    Newport 01633 505306     Brecon 01874 508305     Valleys 01495 707808
Aftersales Service 01873 858428

What's App and SMS Messages 07723 455659

Heronhurst Window and Door Centre Limited. Company Reg. No. 05186594 VAT Reg. Number 840 7009 49

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