Significantly reduce noise pollution and enhance your home’s thermal efficiency with our bespoke secondary glazing solutions in Enfield.
For many homeowners in Enfield, secondary glazing is the ultimate solution to improve comfort without the need to replace original windows. It is the preferred choice for those living in the borough’s many conservation areas or listed buildings, where retaining the character of the external façade is mandatory.

Secondary glazing involves the installation of a discreet, slimline aluminium window on the interior side of your existing primary window. This process creates a sealed air gap that acts as a powerful barrier against both sound and cold air.
How it works:
While double glazing involves the complete removal and replacement of your windows, secondary glazing is a high-performance addition to your existing ones. In many scenarios, especially regarding noise, secondary glazing is actually superior to standard double glazing.
Key differences to consider:
Investing in secondary glazing with The Barnet Window Company brings immediate improvements to your living environment:
FOR MORE INFORMATION ON OUR RANGE, TAKE A LOOK AT OUR SECONDARY GLAZING BROCHURE
Living near a busy road or a noisy motorway can face many challenges, the hardest one to overcome is blocking noise entering your home. Cars and heavy goods vehicles are capable of emitting over 85 decibels which can be detrimental to health. Studies suggest that living in areas with high noise pollution can disrupt sleep patterns evoking high levels of stress.
The European Union has set 65 decibels as the maximum acceptable limit of noise that a person can tolerate on a daily basis.
Noise breaching and entering homes is mainly due to poor acoustic insulation, the main contributor is poorly insulated windows. A single glazed fixed window is capable of blocking up to 30 decibels where a double glazed window in a UPVC frame can stop up to 34 decibels. This noise reduction may seem a lot; however, you can still hear the constant rumblings of nearby traffic.
Homeowners are turning to secondary glazing to mute noise entering their homes. Secondary glazing involves fitting a discreet internal window in addition to your existing, single, double and triple glazed window. It’s a cost-effective and efficient way to insulate and soundproof your windows. Secondary glazing is capable of blocking up to 54 decibels of noise entering your home, this substantial increase in noise insulation can turn the noise of a diesel bus into a whisper.
The video above demonstrates the substantial impact that secondary glazing has on reducing unwanted noise levels. Sound is transmitted through the primary window by a direct vibration of the glass. The installation of secondary glazing creates a cavity which helps to reduce resonance, as well as providing an additional barrier for the sound to travel through.
Sound insulation given by secondary glazing increases as the gap between the primary window and secondary window increases. A minimum cavity of 100mm is recommended, with optimum acoustic performance achieved between 150mm and 200mm.
A noise reduction of 48 decibels is easily achievable, with the installation of an acoustic laminated glass 54 decibels and over can be accomplished. The noise performance chart below demonstrates what internal noise levels can be expected with single glazing, primary glazing and secondary glazing installed.

We utilise Granada Glazing’s market-leading horizontal sliding units to offer up to 80% sound reduction. These horizontal sliders are one of our most popular styles for Enfield homes, providing optimum sound insulation with a smooth opening and closing function.
The panels slide on durable brass rollers to give access to the primary window for cleaning and ventilation. The panels can be individually lifted out of the frame to give full access to the primary window for when general maintenance is required. Granada Glazing’s trade partner recommended the installation of secondary glazing to mute the sound of traffic passing by. The outcome was astonishing where the noise of traffic was turned from the constant noise of traffic into a whisper, this gave a peaceful nights sleep.
We are acoustic and thermal specialists and have designed our secondary glazing systems to offer the very best performance. You can select from over 200 RAL colours with a matt, satin, or gloss finish to blend perfectly with your interior décor. Our products are manufactured and powder-coated in-house to ensure total quality. We have partnered with skilled trade installers who will carry out the discreet installation in your home with minimal disruption.
FOR MORE INFORMATION ON OUR RANGE, TAKE A LOOK AT OUR BROCHURE

