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Listed Building Owners

Get Efficient Heating and Less Noise without Affecting Your Building's Look

 

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Does your listed property need lots of energy to stay warm? Is outside noise disturbing? Our secondary glazing for listed buildings can come to your rescue.

Secondary glazing is an effective and efficient way to enhance your listed buildings thermal performance and reduce noise. This cost-effective and discreet fitting will give you all the functionality without affecting the appearance of your property.

Owners of Heritage buildings, listed properties, and properties in conservation areas need to be mindful of the external appearance of their buildings. They have to follow regulations in order to maintain the authentic appearance of their properties.

However, that fact should not affect the comfort of those living in those buildings.

The warmth of the home is imperative for the comfort of its residents. In order to keep rooms warm, you need to be able to trap the heat in.

Single glazing can allow heat to dissipate rapidly, and even double glazing is not as effective as secondary glazing at improving the heat efficiency.

Secondary Glazing Face fixed
Secondary Glazing Windows
Secondary Glazing Windows
Hinged units Granada
Secondary Glazing View
Liftout Homeowner
Secondary Glazing House Interior
Secondary Glazing Windows
Secondary Glazing Windows
Secondary Glazing Windows
Secondary Glazing Windows Granada
Secondary Glazing Windows

The best part is, our secondary glazing fits in so discreetly that you can continue with your heritage windows and still improve the performance of your home. What’s more, you even get acoustic insulation at the same time.

Our high-durability aluminium secondary glazing comes in over 200 RAL colours. The fittings are extremely long-lasting, with a 5 year warranty on the fittings and a 2 year warranty on the movable parts.

If you are the owner of a listed property in need of some improvement in performance and renovation, give us a call or read more about secondary glazing in listed buildings.

Benefits of Secondary Glazing:

  • Reduce Noise levels by up to 80%
  • Easy to Install, DIY or Installed by tradesman
  • Reduce heat loss through existing window by up to 65%
  • 10% more heat efficient than double glazing
  • Can be installed within conservation areas
  • Available in over 200 RAL colours
  • Arched frames
  • Delivery 10 days of order
  • 5 year warranty (FENSA warranty of installers)

Frequently Asked Questions

To what extent will secondary glazing reduce the sound pollution in my home?

Correctly specified and installed, secondary glazing will acoustically outperform all other types of glazing. It is not uncommon to see secondary glazing where double or triple glazing is installed. To achieve up to an 80% acoustic performance Granada advise the specification of acoustic glass and an air cavity no less than 150mm – 200mm glass to glass.

Reports indicate that a passing diesel bus often creates 85dB of noise. Correctly installed, Granada’s secondary glazing can reduce noise levels by 54dB, a reduction of 54dB will reduce the noise level to 31dB which is the equivalent to a whisper.

What does the installation process consist of for secondary glazing?

Secondary glazing is installed to the interior side of the room creating little to no mess. Often installations can be completed within 30 minutes to 1 hour. To view the installation of secondary glazing please visit our video library web page: VIDEO LIBRARY

We work closely with over 500 national homeowner/trade customers who will make an appointment to measure and install at your convenience. For the DIY market, Granada can supply secondary glazing as supply only where installations videos and what measurements you need to take can be viewed here.

Will I lose the functionality of my windows?

Granada’s secondary glazing is available in many styles complimenting all window types. 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.

Our Products for Listed Buildings

We offer owners of listed buildings a variety of styles, including horizontal and vertical sliders, as well as other bespoke offerings. These are available in over 200 RAL colours, to suit every property and style.

The benefits

Character Retention

Since a property that is in a conservation area, or listed Grade I or II, cannot change their glazing without permission, secondary glazing offers a discreet alternative for enhanced performance.

Bespoke Styles

Heritage buildings can have elaborately shaped windows that might need tailored fittings. Our aluminium secondary glazing can be shaped and fitted to any shape or size, allowing us to cater to a variety of needs and requirements.

Thermal Performance

Our secondary glazing can improve your windows’ thermal performance by up to 65%, which is 10% better than double glazing. Your home becomes better at retaining heat in winter, and air conditioned cooling in summer.

Acoustic Performance

Sounds from outside can be quite disturbing, especially at night when you’re trying to sleep or relax. Our secondary glazing can reduce noise by up to 80%, giving you the peace and quiet you need.

Heightened Security

Our secondary glazing fits inside the window, discreetly adding a layer of protection to your home, in addition to the security your windows are giving you. These fittings require no access from outside, making them ideal for higher floors.

Great Value

For an affordable price, your secondary glazing gives you unbeatable performance. You also get an improvement in the functioning of your listed property. This gives these installations an amazing value for money.

For a listed building owner, it is important to maintain the visual appearance of the property. However, it is equally important to have a home that performs efficiently.

Granada Glazing is the largest producers and suppliers of aluminium secondary glazing in the UK. we understand the delicate balance between performance and appearance for listed buildings.

This is the reason why we offer you the discreet and effective secondary glazing for your homes. These fittings help make your home warmer and quieter. However, they also stay out of sight to keep your property looking its traditional best.

We offer our secondary glazing in over 200 RAL colours, allowing you to pick the one that suits your property best.

We also offer unbeatable performance at an amazing price.

Our durable aluminium fittings require very little maintenance. In spite of this, they last you years, with no loss in performance. In fact, we offer a 5 year warranty on our frames and glass, in addition to a 2 year warranty on all moving parts.

Additionally, we give you superb aftersales services, so you can enjoy your secondary glazing for years. What’s more, you get to keep the authentic appearance of your listed property.

In case you are not completely convinced, why not see what our past customers have to say about us? Our testimonials are filled with comments from happy and satisfied clients.

To see the styles and options we offer, you can browse through our downloadable online brochure.

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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.

Can you Install Secondary Glazing into a Listed-Building?

Secondary Glazing is an excellent way of improving the performance of your property. If you live or own a Listed Building you must be careful about enhancing and changing the external aesthetics of your property. Installing Secondary Glazing does not make any changes to the external appearance of your home. The second window simply sits on the inside of the frame, creating a second barrier to the outside.

Can you put Secondary Glazing in a Grade II Listed Building?

Secondary glazing is often installed within conservation areas, Grade I and Grade II listed buildings. Its unique benefits include increasing acoustic and thermal performance, thus making it a popular choice within the heritage market. English Heritage advises the installation of secondary glazing, as the installation process doesn’t change the original fabric of the building.

Do you need Listed Building Consent for Secondary Glazing?

Yes, you do! Normally Listed Building Consent is not granted for windows and doors, but as Secondary Glazing sits on the inside of the existing window, it is normally allowed. We recommend you check with your local Listed Building council, and ensure you submit the correct paperwork when making house alterations.

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.

What is Fixed Secondary Glazing?

Fixed Secondary Glazing is an independent window that is fitted onto the internal side of your existing window frame. This creates a second barrier between your home and the outside, helping to enhance noise reduction, thermal efficiency and security of your home.

Why add Fixed Secondary Glazing into your home?

When you install Fixed Secondary Glazing into your home, you get an elegant, slimline addition for your property. The external appearance of your home is not altered, but the internal aesthetics are greatly enhanced. The performance of your home is too!

Can I add Fixed Secondary Glazing to a Fire Escape Window?

No, a Fixed Secondary Glazing panel means you cannot have access to the original, existing window. This means that you cannot installed Fixed Secondary Glazing panels to your designated fire escape. This would also not comply with Building Regulations.