Doors and Windows Glazing Secondary Glazing

Is Secondary Glazing For You?

How do I Achieve the Best Thermal Performance From My Windows?

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. 

Can I Reduce Noise Pollution in my Home?

Secondary Glazing will help protect your home against noise pollution. The addition of Secondary Glazing into your home can help to block external noise pollution by up to 80%. The Secondary Glazing panels act as a second barrier against the sound from the outside. To achieve optimal performance, it is advised that Secondary Glazing is fitted with a gap of 150mm – 200mm from the primary window.

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 reduce noise levels by up to 80%, it is advised 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, Secondary Glazing can reduce noise levels by 54dB, a reduction of 54dB will reduce the noise level to 31dB, which is equivalent to a whisper.

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