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Horizontal Slider

Horizontal Sliding Secondary Glazing

A slim and versatile horizontal sliding system which increases both acoustic and thermal performance

Increase Security with Horizontal Sliders

Horizontal sliders can be locked from the room side to enhance security

Reduce Traffic Noise by up to 80%

Horizontal sliders can reduce noise levels and give a peaceful nights sleep

Horizontal Sliding Secondary Glazing

A slim and versatile horizontal sliding system which increases both acoustic and thermal performance

Horizontal sliders provide easy access for cleaning and ventilation, they are suitable for treating most window types. Available with 2, 3, 4 or 5 sliding sashes (panels).

What is Horizontal Sliding Secondary Glazing?

Horizontal sliding secondary glazing is extremely popular due to it being multi-functional and a perfect fit for all property types and styles. Whether you own a period property, listed building or a character cottage, our secondary glazing solutions will complement them all. It is the most commonly used type of secondary glazing and ensures high levels of security whilst achieving durability and a long-lasting lifespan. It is particularly useful when replacement windows are not needed or if your home is within a conservation area as they offer a discreet and subtle upgrade.

Our horizontal sliders are an ideal choice for high rise and low level commercial and residential properties as well as heritage homes. The versatile nature of the sliding secondary glazing solution makes it a cost-effective and worthwhile investment. It is an affordable home improvement solution which you’ll be able to enjoy for years to come.

From Two To Five Horizontal Slider Panels

Two Panel

Two Panel Horizontal

Three Panel

Three Panel Horizontal

Three Panel Centre

Three Panel Centre

Three Panel Centre

Four Panel Horizontal

Three Panel Centre

Five Panel Horizontal

Clear Benefits of Horizontal Sliders

65% reduced heat loss

Using 4mm toughened Low E glazing, with 80mm glass-to-glass optimum U Value: 1.868 W/m2K.

80% noise reduction

Using 6.4mm acoustic laminate glazing, with 200mm glass-to-glass optimum Noise Reduction: 52dB (Rw).

What are the Benefits of Horizontal Sliding Secondary Glazing?

Horizontal Sliding

Create a Peaceful, Warm and Secure Home

Adding horizontal sliding secondary glazing to your home will mean that you benefit from increased insulation, excellent sound reduction and more. They can be added to a range of windows such as casement, hinged or any window that has vertical bars. We can discuss your exact requirements and specifications, coming up with the best way to install sliding secondary glazing to your home.

Available in a wide range of sizes with a choice of configurations to tailor your horizontal sliding secondary glazing to your needs, you’ll find that we can create the perfect fit. Available in two, three, four or give panels, the sashes can be completely removed when you need to clean and maintain the existing window. Because the sashes are fitted with brass rollers, it ensures a smooth sliding action making them easy to use. You won’t have to worry about spending time or money on their upkeep, simply give the windows a wipe down from time to time to keep them in optimum condition.

Horizontal Sliding Windows

Discreet, Slimline and Unobtrusive Design

Our horizontal sliding secondary glazing allows easy access to the primary windows for ventilation and each individual secondary glazing panel can be lifted up into the top of the outer frame and then swung inwards to facilitate removal. This allows access for cleaning and maintenance.

Horizontal sliding secondary glazing has been proven to eliminate draughts, increase thermal efficiency and improve the security of your home. You can add further hardware accessories and options such as specific locks and handles to increase the security further. Our horizontal sliding secondary glazing results in a warm, secure and quiet double glazing solution that will make all the difference.

Our horizontal sliding secondary glazing can help you to achieve thermal efficiency in your home, making it warmer for longer. This means your home will remain at a consistent and comfortable temperature reducing your reliance on central heating and helping to keep your energy costs low. This in turn decreases your carbon footprint, making it an eco-friendly upgrade and helping you contribute to a greener environment.

Horizontal Sliding Windows

Keep the Weather and Noise Outside

When you fit horizontal sliding secondary glazing you’ll find that you no longer suffer with condensation issues which is usually the cause of mould and mildew. Secondary glazing keeps moisture out keeping your home warm and dry. The weathertight seals mean that your windows can withstand even the most adverse weather conditions that we often get in the UK.

You can enjoy peace and quiet when you add horizontal sliding secondary glazing due to the sound insulation that it provides. Proven to reduce outside sounds from traffic, airports, schools, built up areas and more, you’ll find your home is a more serene place to be no matter where you live. You can enjoy tranquillity in every room of your home.

Features of Secondary Glazing Sash Windows

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.

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What Is Secondary Glazing?

Secondary glazing is a discreet window that is installed in addition to your existing windows. It is installed to the internal side of your property. Available in different styles to suit all window types, secondary double glazing improved noise insulation and thermal efficiency. No other form of glazing can reduce noise levels by up to 80% (which is the equivalent of 54 dB). As it doesn’t change the fabric of the building, secondary glazing can be installed to homes in conservation areas as well as grade I and II listed buildings. Keep the same traditional charm of your original windows with added modern performance benefits. All of Granada Glazing’s products are manufactured from durable aluminium and can be powder coated in over 200 RAL colours. Thanks to the aluminium frame, secondary glazing also offered increased security levels. If your primary windows are forced open, secondary glazing acts as a second barrier as it can’t be opened from the outside. This makes them ideal when used in conjunction with single, double or triple glazed uPVC or timber windows.

What Are The Types Of Secondary Glazing?

There are six main types of secondary glazing! Our expert team will help you decide which style is best suited to your windows. Lift Out Units - Used when the primary window is fixed, or when the primary window is required to open for ventilation. Hinged Units - These units are used with casement or hinged primary windows. Vertical Sliders - The perfect addition to vertical sliding sash windows. The meeting rails align with the primary window meeting rail. Horizontal Sliders - Used in conjunction with casement or sash primary windows. That requires full access and where the casement window has sufficient space internally to open the secondary glazing. Bespoke - Ideal for more traditional properties, secondary glazing can be installed to unique primary windows. Fixed - Used for an independent window that is fitted internally.

How Effective Is Secondary Glazing?

Secondary Glazing can be a very effective way of enhancing thermal efficiency, security, and noise reduction in your home! The second window acts as a barrier between your UK property and the outside world. Experience a home that is 80% quieter and 65% warmer all year round.

How Does Secondary Glazing Work?

When installed, secondary glazed windows sit inside the same window frame as your existing window. This acts as a second barrier between your home and the outside helping to improve your homes thermal efficiency, security and reduce noise pollution. This makes it the perfect solution for homes that do not want to completely replace their windows but are looking to make them more efficient.

Which Glass Type Should I Choose?

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 in thickness to coating. Each type of glass has specifically been designed and selected to offer optimum performance. 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, we suggest the specification of 8.8mm clear acoustic glass. 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 specially designed coating that reflects heat waves 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. We can provide a tailored solution to rectify your issue, which is both cost-efficient and practical for your specific needs.

What Is The Installation Process For Secondary Glazing?

Secondary glazing is installed to the interior side of the room creating little to no mess. We can often complete installations within 1 hour. We work closely with over 500 national trade installers who will make an appointment to measure and install at your convenience.

What Materials Are Used For The Frames?

As market leaders within the glazing industry, it is essential that our secondary glazing is high performing and aesthetically pleasing. The key to our approach is to use the best raw materials available and manufacture to the highest standard possible. All of our frames are manufactured in house from slimline, durable aluminium. We cut, powder coat, arch and fabricate our aluminium frames in-house under one roof. Utilising high tech machinery such as CNC machines, we can ensure all frames are built to size as sealed units. Our knowledge, expertise and skills in manufacturing ensure high quality and the best performing product. Our competitors have tried to reduce the amount of aluminium within the frames to reduce the cost of raw materials, but we found this has a negative effect on product quality. Granada’s head office holds a team of product developers where they can often be found designing and manufacturing glazing products using new materials and manufacturing techniques. All of our products are quality tested before they leave our facility, ensuring a high level of quality and function.

Will I Lose the Functionality Of My Windows?

Granada’s glazing is available in many styles complimenting all window types. This way, you will still be able to use your original windows all year round. We have a range of windows that slide horizontally and vertically for easy access and cleaning. Our hinged unit operates on a hinge mechanism that can be placed on the side of the window for conventional opening or on the top or bottom dependent upon your requirements. Other window styles include fixed windows or lift outs which can easily be lifted out of the frame.

What Are The Advantages Of Secondary Glazing?

There are many benefits to secondary glazing! This type of glazing offers the most effective sound insulation, reducing noise levels by up to 80%. Secondary glazing also improves heat insulation and reduces heat loss through the window by around 65%. Secondary window glazing is an excellent value for money.

Can you Choose the Colours of Secondary Glazing?

Our Secondary Glazing comes in a range of bespoke and RAL colours. This means our Secondary Glazing can be the perfect addition, which can suit your home perfectly.

What Colours are the Secondary Glazing frames available in?

You can choose from a range of RAL colours, and bespoke colours when you choose our Secondary Glazing! This means we guarantee we have the perfect addition for your home!

What Colours are the Frames Available in?

Our products are manufactured from durable aluminium and powder coated in house. Our standard, and most popular colour is Standard White with a high gloss finish. In addition to standard white, we hold stock colours which include: Van Dyke Brown (BS08B29, Gloss) Cream (RAL9001, Satin) Grey (RAL7016, Satin) Ivory (RAL1015, Satin) Black (RAL9005, Satin) Traffic White (RAL9016, Matt) Pure White (RAL9010, Satin) To offer our customers short lead times Granada purchased a powder coating line allowing us to finish all products in house. This investment has given our customers a level of customisation as we can powder coat frames in over 200 RAL Colours to suit all taste and preferences.

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.

A Sympathetic Range of Two Sliding Secondary Glazing Styles

Our bespoke products support the sympathetic treatment of all window styles. As windows vary in sizes, we have two ranges: Traditional and Heritage. Both styles offer optimum acoustic and thermal performance, the main difference is the thickness of the aluminium profile.

Traditional range of Horizontal Sliders: offers minimal sightlines and is requested more often, it is suitable for most homes and commercial properties.

Heritage range of Horizontal Sliders: utilises a slightly thicker aluminium profile suitable for larger windows.

Sizes for each range can be seen below, please speak with our friendly customer care team to understand which style is best for your property.

Product
Configuration
Width (Maximum)
Height (Maximum)
SS2
2 Pane
2,400mm
1,800mm
CO3
3 Pane
3,600mm
1,800mm
SS3
3 Pane
3,600mm
1,800mm
SS4
4 Pane
4,900mm
1,800mm
SS5
5 Pane
4,900mm
1,800mm
Larger sizes are available upon request, sizes based on 4mm glass (other types of glass are available upon request)
Product
Configuration
Width (Maximum)
Height (Maximum)
HSS2
2 Pane
3,200mm
2,700mm
HCO3
3 Pane
4,900mm
2,700mm
HSS3
3 Pane
4,900mm
2,700mm
HSS4
4 Pane
4,900mm
2,700mm
HSS5
5 Pane
4,900mm
2,700mm
Larger sizes are available upon request, sizes based on 4mm glass (other types of glass are available up on request)

Our Testimonials

Really impressed with the speed and quality of the work. It has made a huge difference to the house.

July 20, 2016

Windows look great, have made a big difference, very polished.

June 24, 2016

Complete process from quote to installation was very smooth. Appointments were always kept on time and goods were supplied as specified. A very professional company fashion.

July 20, 2016

Horizontal Sliding Secondary Glazing