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Hinged Secondary Glazing

Our most discreet secondary glazing product, with 72mm sight lines and no transoms or mullions. Side and base opening is also available.

What are Hinged Secondary Glazing Windows?

With no transoms or mullions to spoil the view, our Heritage hinged secondary glazing windows provide a truly unobtrusive glazing system. They retain the character of your existing primary windows, whilst delivering great acoustic performance, enhanced thermal efficiency, condensation control and enhanced security.

Hinged secondary glazing windows are popular due to being suitable for all types of property from modern high rises to period cottages or homes. Secondary glazing is useful for when you have windows that don’t need fully replacing so that you can add to them to make them multi-functional.

Heritage hinged units can be supplied with the hinges positioned left or right, or top-hung to suit your existing windows. Hinges can also be butt style to provide 180º/90º opening, plus they’re designed to avoid hinge-drop, to ensure maximum durability. This is an extremely advanced secondary glazing system. Our hinged units are capable of supporting up to 120kg in weight, making them a popular choice with many of our commercial clients.

The units are fully square and sealed, whilst a single operating handle (positionable at any height) ensures easy access for large-scale systems. You can add the hinged secondary glazing window to any style of window from casement to hinged, as long as there are vertical bars.

Panel Options for Hinged Secondary Glazing

Traditional Hinged Unit (HU)

Heritage Hinged Unit (HHU)

Double Heritage Hinged Unit (DHHU)

Why add Hinged Secondary Glazing Windows?

Adding hinged secondary glazing windows to your home will enhance the insulation and thermal efficiency of your home. This is particularly helpful when it comes to saving money on your energy bills and reducing your carbon footprint. In the colder months, your home will remain warm and comfortable no matter the weather, creating an inviting and enjoyable atmosphere.
In the warmer months, you can easily open up your hinged secondary glazing windows to allow in a natural air flow and increased ventilation. You’ll be saving on your heating and cooling costs, making it a cost-effective solution.

We have hinged secondary glazing windows with a large range of styles, choices and configurations to result in the perfect fit. You won’t have to worry about spending time or money on their upkeep as they are easy to maintain and durable. All of our aluminium frames can be powder coated in up to 150 RAL colours meaning that you have complete choice in how your windows look. Blend them with your existing surroundings or pick a colour to stand out, the option is up to you.

Installing secondary glazing in your home will bring you all the benefits of thermal efficiency and helping you to save money but most importantly it will eliminate issues with condensation meaning you’ll no longer need to worry about a build-up of mould or damp. Locking moisture out so that your home remains warm and dry is the sole purpose of our hinged secondary glazing windows. Our secondary glazing can withstand adverse weather conditions such as heavy rainfall and snow, with the water tight seals maintaining the integrity of your windows.

Added to the thermal efficiency is the exceptional noise reduction that comes with installing hinged secondary glazing windows. Your home will be a tranquil and quiet place regardless of whether you live near heavy traffic, built up areas or other causes of noise pollution. This makes quite a difference for your ability to relax in your home.

All of our windows come with a five year warranty on frames and glazing so that you can be sure you’re investing in a worthwhile product that is high performance all year round. Our local partners can deliver and install your hinged secondary glazing windows at your convenience, keeping you in the loop at every point in the process.

Clear Benefits of Hinged Secondary Glazing

65% reduced heat loss

Using 28mm double glazed sealed unit, with 80mm glass-to-glass optimum U Value:0.97 W/m2K.

80% noise reduction

Using 6.4mm acoustic laminate glazing, with 200mm glass-to-glass optimum Noise Reduction: 54dB (Rw).

Maximum Frame Sizes of Hinged Glazing

Traditional range

Heritage range

Hinged Secondary Glazing Windows

Features & Options of our Secondary Glazing

5 Year Warranty

5 Year Warranty

All windows come with a five-year warranty on frames and glazing.

Delivery

Local Delivery

Our local partners can deliver and install at your convenience.

RAL colours

Choose From 200 Colours

Aluminium frames can be finished in the full range of RAL colours.

Bespoke Range of Glass

Glazing can be specified from 4 - 8.8mm, to meet thermal and acoustic demands.

Cleaning and maintenance

Simple to Maintain

Cleaning and maintenance is made simple with easy to lift out panels.

Fixing

Discreet Installation

Windows can be face-fixed or reveal-fixed, to suit your preference.

Contact Granada Today for Hinged Secondary Glazing

You can get a free no-obligation quote for your hinged secondary glazing window need or get in touch with our expert team to find out more information.

We can talk you through our entire range to make sure you get the perfect secondary glazing solution for your home.

Request a Free Secondary Glazing Quote – 2 Simple Steps

Fixed Secondary Glazing FAQs

How do I Keep my House Warm?

Having double glazing, or Secondary Glazing installed in your home is an essential way to enhance the thermal efficiency of your home. Secondary Glazing will help to keep your home warm even in the coldest winter months!

How do I Achieve the Best Thermal Performance?

Draughty windows can make a room feel uncomfortable and will result in higher energy costs as heat is escaping. Secondary glazing, with either 4mm, 6mm or 8.8mm Low E glass, can reduce heat loss by up to 65% and instantly prevent draughts. We often recommend the installation of Low E glass as it has a specially designed coating that reflects heat into the room. For optimum performance, we recommend that the secondary glazed unit is face fixed to the interior side of your primary window with an air cavity of no more than 80mm. Secondary glazing will decrease the amount of heat loss when installed with single, double or triple glazed timber or uPVC windows. Here at Granada, we can manufacture our secondary glazed units with or without a hardwood subframe. We advise the installation of a hardwood subframe as this acts as a thermal barrier, preventing the aluminium frame and glass cooling due to the temperature of the fabric of the building. Please speak with us directly where we can advise which type of glass, product and installation type will yield the best results.

Will Secondary Double Glazing Eliminate Draughts?

Secondary Glazing is a great way to eliminate draughts in your home. Not only will your home remain warm against the cold draughts, but Secondary Glazing also helps keep the warm air inside your home. This means you will have reduced heating bills across time! Saving you money!

Will Secondary Glazing Reduce Heat Loss?

Of course! Secondary Glazing acts as a second barrier between your home and the outside. This helps to keep your home warm even in the coldest winter months. Helping to trap the warm air inside, and keeping the cold air out.

What are the Main Benefits of Secondary Glazing?

Old, single glazed timber windows can leak vital warm air causing draughts leading to increased energy consumption. If your windows are currently underperforming, secondary glazing can decrease heat loss through your primary windows by 65%. To achieve a 65% reduction in heat loss, we advise the installation of 6.4mm Low E glass. Low E glass has a specifically designed coating that reflects heat back into your room. When installing secondary glazing to enhance thermal performance, the best installation type is face fix. Face fixing is where you install the secondary glazed unit to the inside face of the primary unit. To gain the best performance results we advise an air cavity of 80mm glass to glass.

How do I Achieve the Best Thermal Performance?

Draughty windows can make a room feel uncomfortable and will result in higher energy costs as heat is escaping. Secondary glazing, with either 4mm, 6mm or 8.8mm Low E glass, can reduce heat loss by up to 65% and instantly prevent draughts. We often recommend the installation of Low E glass as it has a specially designed coating that reflects heat into the room. For optimum performance, we recommend that the secondary glazed unit is face fixed to the interior side of your primary window with an air cavity of no more than 80mm. Secondary glazing will decrease the amount of heat loss when installed with single, double or triple glazed timber or uPVC windows. Here at Granada, we can manufacture our secondary glazed units with or without a hardwood subframe. We advise the installation of a hardwood subframe as this acts as a thermal barrier, preventing the aluminium frame and glass cooling due to the temperature of the fabric of the building. Please speak with us directly where we can advise which type of glass, product and installation type will yield the best results.

How Can I Prevent Condensation?

Condensation occurs naturally on windows, whether these windows are double or single glazed, whenever moist, warm air, encounters a cold surface. Excellent quality and well fitted Secondary Windows, combined with unsealed primary windows or trickle vents, provide a completely tight, internal seal helping to prevent condensation.

Will Secondary Glazing Stop my Condensation?

Yes! Secondary Glazing can help prevent condensation throughout your home. Their airtight seal means your windows will not suffer from unwanted condensation, no matter what the weather!

How to Minimise Condensation?

Secondary glazing, installed with a trickle vent, can help minimise the level of condensation. The trickle vent aids air circulation within the air cavity, which, in turn, can reduce condensation. Granada can install an acoustic trickle vent which has been specifically designed to support air circulation while preventing noise waves passing through it. A hardwood subframe can act as a thermal barrier, as aluminium is a great heat conductor, the wooden subframe prevents cold bridging from the fabric of the building onto the aluminium. In turn, this can help reduce condensation as the temperature of the aluminium frame and glass is not cooled by the heat of the building fabric. Condensation is caused when hot air makes contact with a cold material and where the air is then cooled, where water droplets appear. Minimising the temperature of the glass within your primary units should help to decrease the level of condensation.

Can you Install Secondary Glazing into Conservation Areas?

Secondary Glazing is a great option for enhancing the performance of your home when you live in a conservation area. This normally means no physical changes can be made the external aesthetics of your home. Installing Secondary Glazing will enhance the internal aesthetics of your home while the external look of your property remains the same. This means you can benefit from increased security, thermal efficiency and sound reduction too!

Do I Still Need Planning Permission for Secondary Glazing?

While it is uncommon for Secondary Glazing to require planning permission, we advise that you check with your local planning permission and Building Regulations so you comply.

Can you use Secondary Glazing for Crittall Windows?

Crittall Windows are especially well-served by Secondary Glazing. Adding Secondary Glazing can help to tackle draughts and energy inefficiency which are often associated with Crittall style Windows.

Can you use Secondary Glazing for Leaded Windows?

Yes! Secondary Glazing is an excellent option to improve the performance of your existing windows. It is cheaper than getting replacement windows for your existing ones, and when they are installed to a high standard, you can improve the overall energy efficiency of your home too!

Can you have Secondary Glazing for Bow Windows?

Secondary Glazing can be fitted to the internal of any window in your home, including Bow windows! Even with the curving of a Bow window, you can install Secondary Glazing to help improve the performance of your home. This is possible because our Secondary Glazing is fitted as a separate, secondary unit to your existing window.

What is the Difference Between Face Fix and Reveal Fix?

Secondary glazing is installed by either reveal fixing or face fixing each installation type will increase either acoustic or thermal performance. Reveal Fix – To achieve the optimum acoustic performance, we recommend acoustic glass where the secondary glazed unit is installed with a 150mm to 200mm air cavity glass to glass. The secondary glazed unit is installed within the window reveal enhancing acoustic performance by up to 80% (54 dB). Face Fix – Face fixing is recommended to increase thermal performance. The secondary glazed unit should be installed no more than 80mm away from the primary window. It is installed to the internal face of the primary window, and when taking advantage of Low E glass, customers often see up to a 65% decrease in heat loss.

I have Windows in Varying Sizes and Shapes, is Secondary Appropriate?

Granada’s secondary glazed units are manufactured to order in bespoke sizes and colours. We can bend/arch frames in-house to suit any window size, shape or style. As our products are made to order, we can manufacture units that match both transoms and mullions to reduce sightlines and make the secondary glazing even more discreet. For larger windows, typically commercial applications, we can stack or couple single units to achieve the required coverage.

Which Glass Type Should I Choose for my Secondary Glazing?

Secondary glazing is usually specified to combat two main issues; acoustic or thermal performance. In conjunction with the air cavity, the type of glass specified plays a vital role in rectifying your problem. As standard, all of our products are manufactured with 4mm toughened glass for enhanced security and safety. (Please be aware that other secondary glazing providers may supply float glass which is brittle and can be easily broken. If broken, it can leave large dangerous shards, often resulting in injury). Here at Granada, we provide several types of glass, ranging from different thicknesses to different coatings. Each type of glass has specifically been designed and selected for optimum performance. Sound – Selecting the correct glass and installing the secondary glazed unit with an air cavity of 150mm to 200mm, can drastically reduce noise issues by up to 80% (54 dB). Most traffic noise problems can be rectified with the installation of either 6.4mm or 6.8mm clear acoustic glass. Where noise is a real nuisance, and loud in nature, we suggest the specification of 8.8mm clear acoustic glass. Thermal – Cold draughts breaching your primary windows can make a room feel uncomfortable and makes it uneconomical as the loss of heat will result in higher energy costs. Where thermal performance is required, we advise the installation of either 4mm, 6mm or 8.8mm clear laminate low E glass. Low E glass has a specifically designed coating that reflects heat waves back into the room, thus keeping your it warm in the winter, and cool in the summer. The type of glass specified can increase or decrease your quoted price. It is best practice to speak with us directly as you may over-specify the glass type. Some of our customers and commercial clients specify the highest performing glass, which in turn adds cost. Often we can provide a tailored solution to rectify your issue, which is both cost-efficient and practical for your specific requirements.