Granada Secondary Glazing: UK Manufacturers of Quality Aluminium Secondary Glazing Windows Since 1983

With over 40 years of experience, Granada has manufactured and supplied more than a million bespoke aluminium secondary glazing windows, enhancing energy efficiency, noise reduction, and security for commercial and heritage properties across the UK.

Our state-of-the-art manufacturing facility in Sheffield ensures exceptional quality and fast lead times—making us the trusted partner for architects, contractors, trade professionals, project managers, and developers. Whether you are working on large-scale developments or listed buildings, we have the expertise and tailored solutions to meet your requirements.

Explore our solutions and discover how we can support your next project:

Get a Free Quote Today

BSI CHAS Constructionline Achilles

FAQs

Yes, by up to 51dB – ideal for homes and offices near traffic, railways and airports.

Find Out More

  • By adding an extra layer to your windows, it improves insulation and reduces heat loss
  • Cuts energy costs by up to 30%
  • Affordable alternative to double glazing
  • Provides long-term benefits without the need to replace your existing windows

Get a Free Quote