Glass Unit Replacement: Upgrade your windows with Acoustic Glass
At Secondary Glazing NI we also replace your old double glazed units with A Rated double glazed Acoustic glass to help reduce noise Pollution. Please
Stay warmer and minimise cold draughts with Secondary Glazing
Reduce external noise pollution and have a quieter, more peaceful home
Enhance the security of your property with additional lockable safety glass
windows”
Secondary glazing involves installing an additional single-glazed aluminium window on the inside of your property, positioned directly behind the existing external window. This creates a highly effective secondary barrier that significantly improves overall window performance.
It delivers greater thermal insulation, excellent noise reduction, and enhanced security, helping make your home or business warmer, quieter, and more secure.
Because the system is fitted internally, it provides all these benefits without altering or damaging the original window, making it ideal for listed buildings, conservation areas, and any property where maintaining the external appearance is essential.
The slim, discreet aluminium frames ensure the upgrade remains unobtrusive while delivering modern comfort and protection.
We specialise in providing innovative secondary glazing window solutions tailored to meet your needs, whether you are looking to reduce your business or home heating bills or want to block out unwanted external noise.
We install secondary glazing throughout all of Ireland—North and South. Get in touch today for a free quote, and let us help make your property warmer, quieter, and more secure.
Whether you’re a homeowner, architect, or contractor, we provide tailored secondary glazing solutions suitable for all property types, including listed and heritage buildings.
Get in touch and tell us about your property. We provide guidance, options, and a clear project cost with no obligation.
We tailor each unit to your exact window style, size, and performance requirements, from acoustic glass to thermal Low-E.
Our trained installers fit your secondary glazing with minimal disruption—leaving you with instant comfort and long-lasting results.




At Secondary Glazing NI we also replace your old double glazed units with A Rated double glazed Acoustic glass to help reduce noise Pollution. Please
Balanced vertical sliders with 6.4mm laminate glass. Sleek, useful, warm and quiet