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WHAT IS SECONDARY GLAZING ?
Secondary glazing is a simple way to reduce noise and draughts and cut heating bills . It is perfect for listed buildings and rented accommodation where altering or replacing the prime window is not possible . Secondary glazing involves adding an extra slim-line window in addition to your existing windows . Available in many styles and 200 + RAL colours to match existing windows , it will blend in with your property , curtains and blinds remaining unaffected most of the time .
WHY ALUMINIUM ?
Aluminium is durable , will not rot , allowing for naturally strong and very discreet slim frames . We offer a range of made to measure systems , from simple lift out and fixed units through to horizontal and vertical sliders , aluminium can even be curved to form arched units .
DELIVERY
Our standard lead time is 2-3 weeks , but if your requirement is urgent we also offer a Fast Track service . Delivery is by our own GPS tracked vans and we cover most of the UK . Sliding panels come made up and fully glazed and the majority of the time they can be delivered fully assembled within the frame ready for installation . Your outerframe may be supplied in kit form if site access is a problem or the units are particularly large .
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EASY INSTALLATION
Due to the uncomplicated nature of Duration Secondary Glazing it is remarkably straightforward to assemble and install . Fixed from the inside , secondary can be fitted throughout the year providing income whatever the weather . By simply fixing pre drilled units to the existing windows or into the window reveal , you can be sure of a mess free easy installation .
Cover trims are included and come in a range of sizes and finishes including white plastic , tulip , and solid oak . To save time some trims are available pre-primed . They are provided to hide fixing screws and ensure a professional clean finish .
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BENEFITS OF SECONDARY GLAZING
Adding well-fitted secondary glazing with standard 4mm glass will give significant benefits in energy saving and reducing heating bills . Duration offer a range of glazing options including Float , Toughened & Laminated . For the best sound reduction , we offer 6.8mm Acoustic or 6.4mm Laminated .
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Slim lines and high specification make our Secondary Glazing the go-to solution for listed buildings . Considered to be a reversible change , secondary glazing is recommended by English Heritage and the Listed Property Owners Club .
Having a 100mm - 200mm air gap between the secondary glazing and the existing windows ( glass to glass ) will provide an optimum gap for sound and heat performance . The air gap provides an additional barrier , preventing heat and sound from passing through . We have a deeper SF3 and SF4 subframe specifically for the purpose of ‘ reveal ’ fixing the secondary glazing to give this gap . If only a smaller gap can be used then secondary glazing is still very effective .
If you ’ re uncertain about the look and feel of secondary , Duration provide free survey sample kits . Each kit contains off cuts from our secondary systems , including extensions , wooden frames and trims and are available through our Sales team .
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CHOOSING GLASS THICKNESS
When installing secondary glazing for sound proofing we recommend that you use a different thickness of glass in your secondary glazing than that of the glass in your existing windows . Different thicknesses of glass will help to block different wave lengths of sound . For maximum sound reduction we offer acoustic glass which is 6.8mm thick . Our 6.4mm ‘ laminated ’ glass offers a significant noise benefit over other glass options , but at a reduced cost compared to acoustic glass . Double glazed units are available on our Heavy Duty Horizontal and Vertical Sliders and these also benefit from larger maximum panel sizes .
FREE SURVEY KIT AND GETTING PRICES
Preferred by our customers , the fastest way to get a price is by using our online estimator ( www . duration . co . uk ). It ’ s quick and easy to use and you ’ ll get a price in minutes . Alternatively send us details of what you want us to quote by email or fax . Please also contact us for your free survey kit .
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