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Sound Proofing Thermal Insulation Condensation Control Added Security

DIY Kits


DIY secondary glazing kits - fully glazed, shrink-wrapped & delivered to your door


Since our formation in 1992, we have focused on providing: 

  • quality secondary glazing
  • real value for money


  • excellent service
  • fast delivery

We have grown steadily and we are now the largest specialist manufacturer and supplier of DIY secondary double glazing kits in the UK.


Granada Secondary Glazing Head Office

Secondary Window Products

We manufacture a full range of high quality, discreet, aluminium secondary glazing systems and provide an extensive variety of options, accessories and extras:

  • manufactured to be robust & durable
  • the standard finish is white
  • all other colours are available upon request
  • glazed with optical quality float glass
  • click here for glass types
  • locks, couplers, trickle vents
  • bay sub-frames
  • safety glass, thermal glass, noise insulation glass
  • obscure & patterned glass
  • child safety opening restrictors
Pre-prepared Angled Bay Subframes

Specifications & Benefits

Granada secondary double glazing will complement your home, providing maximum benefits and years of trouble-free service, specified and designed for:

Secondary Glazing Sash for Noise and Thermal Insulation

Information & Help

We provide all of the information and help that you may need to:

Advice and Help for Measuring



  • need to be a competent DIY'er.
  • to have just the basic minimum of hand tools
  • need an extra pair of hands to help with any large units
  • how to measure


All secondary window units are delivered by prior appointment and are ready for easy installation.

  • fully assembled *
  • fully glazed
  • with pre-drilled fixing locations

shrink-wrapped for protection


  • each secondary window comes with a comprehensive, no-quibble, 5-year guarantee

* large units may be delivered with the outer frame disassembled     for ease of handling, ready to easily screw back together.

All Secondary Windows are Shrink Wrapped for Protection

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