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Opal Heritage

Steel Like-For-Like Replacement Windows

Opal Heritage Replacement Windows

Traditional design ideal for listed properties

The Opal Heritage windows are our ultra slimline steel replacement windows, designed to suit like-for-like demands on listed buildings. Perfect for renovations and refurbishments to improve the thermal efficiency of the property.


Opal Heritage is the ideal window system for heritage applications such as listed building renovations where planning regulations demand a like-for-like steel replacement window with optimum thermal performance. They are a traditional looking window and are often requested for cottage style properties. This system can also be used for single and double french doors to create a slimline, contemporary alternative.

  • Suitable for Heritage applications
  • Thermally broken system
  • Hardware & security upgrades
  • PAS 24:2012 available on request
  • Document L compliant
  • All colours available on request


Typical Sightline 74.5mm
U-Value 1.3 W/M2K
Max. Top hung height 1300mm
Max. Top hung width 1400mm
Max. Side hung height 1400mm
Max. Side hung width 700mm
Frame Depth 47mm
Window Energy Rating B
Double or Triple Glazing 24, 28, 32 or 36mm
Applications Residential, Commercial, Retail

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