Secondary Glazing by Granada Glazing

A Smarter Way to Improve Comfort, Quiet & Energy Efficiency

Secondary glazing is an internal glazing system installed on the inside of existing windows, creating an additional insulated layer without altering the original façade.  Perfect for period properties, listed buildings and modern homes alike.

What Is Secondary Glazing?

Secondary glazing is an additional internal window system fitted behind your existing frames. By creating an insulating air gap, it boosts thermal performance and sound insulation without altering the external appearance of your property.

It’s one of the most effective — and cost-efficient — ways to improve comfort.

Why Homeowners Choose Secondary Glazing

Stay Warmer All Year Round

The insulated air space helps trap heat inside your home, reducing cold spots and draughts.

Reduce Outside Noise

Traffic, neighbours and street noise are significantly reduced — creating a calmer indoor environment.

Preserve Original Windows

Ideal for heritage homes where replacing windows isn’t suitable or permitted.

Lower Energy Bills

Improved insulation means your heating works more efficiently.

Contact us today to discuss the range of secondary glazing we have to offer.