Secondary Glazing

Granada’s Secondary Glazing is Discreet, Durable and Functional. Secondary glazing is a stylish and cost effective way of increasing both acoustic and thermal performance.

Homeowners install secondary glazing to combat two main issues, acoustic and thermal performance. The installation of secondary glazing boasts a great number of benefits and can be installed within all house types even Grade I and Grade II listed buildings. Our customers receive an 80% reduction in noise breaching the primary window and up to 65% reduction in heat loss.

Made from durable aluminium and available in over 200 RAL colours our systems are discreet, functional and come with a 5 year warranty on frames and glazing and a 2 year warranty on moving parts.


Why choose our Secondary Glazing?

  • Up to 80% noise reduction
  • Minimise drafts, reduce heat loss by up to 60%
  • An additional security barrier
  • Condensation control
  • Reduced carbon footprint
  • Available in over 200 RAL colours
  • Can be installed within conservation areas
  • 5 year warranty (FENSA warranty of installers)

Sound Insulation

Secondary glazing offers the most effective sound insulation – significantly outperforming double glazing. From noisy roads to noisy kids, our windows can reduce noise levels by up to 80%.


Thermal Insulation

Substantially improves the thermal insulation of existing single-glazed windows – reduces heat loss through the window by around 65% – around 10% more than double glazing.


Increased Security

Secondary windows offer an affordable, discreet, highly effective solution to enhancing building security. No external access is required, ideal for multi-storey buildings.


Granada secondary glazing will complement your home, providing maximum benefits and years of trouble-free service, specified and designed for thermal and sound insulation.


Retain Character

As the Granada range is slim line and discreet it has been specifically designed for listed building windows, conservation areas and heritage properties.


Condensation Solution

Where condensation is a major issue, we often specify secondary glazing with balanced trickle ventilation. This provides a simple, cost-effective, and permanent solution.