Double Glazing Specialists

Welcome to Granville Noise Insulators Ltd.

Granville Noise Insulators Ltd specialise in double and secondary glazing. We successfully supply and install uPVC, aluminium windows, doors, bi-fold and composite doors..

We provide high quality double and secondary glazing to homes, businesses, public buildings and to local authorities in London, Hertfordshire, Kent and Essex.

We have an experienced, qualified and dedicated team who carry out all works to the highest standard. We pride ourselves on quality and competency and only employ the best surveyors and installers. We treat your property as if it was our own.

We supply premium quality products, and our team has long-term expertise with a dedicated customer focus to ensure our continued success.

If you would like to get in touch for a free no obligation quote or would like to book an appointment, please feel free to get in contact to speak to one of our experts Contact Us

Double Glazing

Our windows are tailor made for you. We supply and install premium quality products to the highest standard. Our windows will enhance the appearance of your property, adding security and will significantly improve thermal efficiency.

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Double Glazing Windows
Double Glazing Windows
Secondary Glazing

Our slim line aluminium frame secondary glazing offers a great solution for external noise reduction and eliminating drafts. Ideal for properties such as listed building where restrictions are in place. Available in a range of colours and glass thicknesses.

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Our huge range of UPVC, aluminium, bi-fold and composite doors prioritise security and thermal efficiency. A new composite door will instantly enhance the front of your property and our bi fold doors create modern open plan indoor outdoor living, maximising light and transforming your living space.

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Double Glazing Windows
Double Glazing Windows

Our ventilation units bring in cooled purified air to your property. They remove dust in the room and alleviate symptoms of condensation and mould. A perfect addition if you have external noise and you prefer to keep your windows closed.

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Our Partners

London City Airport Logo - GNI Parttner
Newham London Logo - GNI Parttner
London Luton Airport Logo - GNI Parttner
Eurocell Logo - GNI Parttner

Socially responsible and environmental friendly

Experienced, competent and skilled installers

Customer focused delivering on time