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  • Non-Fragile

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Lonsdale Roofing

ThermGard-R Rafter Glazing System

ThermGard-R Rafter Glazing System

Glazing Bars for Timber Rafters

  • Suitable for Double or Single Glazing
  • Electric or Manual Ventilators Available
  • Integral Drainage Channels Prevent Leaks
  • Combination of Natural Beauty and Warmth

​ThermGard-R aluminium glazing bars for timber rafters provide the ideal combination of the natural beauty and warmth of timber inside a weather-tight, maintenance free external finish. The carrier rail features integral drainage channels to ensure in the unlikely event that water penetrates the capping and high-performance gaskets, it is safely transported to the outside of the building. A continuous screw on pressure plate with provides outstanding glass retention and a choice of decorative external covers are available to provide either contemporary glass roof appearance or a more traditional heritage style for roof lanterns on period buildings.See here for typical hardwood conservatory details [1] [2].

  • ThermGard-R Rafter Glazing Bars

    ThermGard-R Rafter Glazing Bars

    Call 0208 801 4221 For a Competitive Quote or Email info@lonsdalemetal.co.uk

    We offer stock lengths or a design and fabrication service with all materials, pre-drilled, cut to size complete with all necessary fittings and fasteners ready for immediate installation.


“We’ve fitted ThermGard-R glazing bars time and again and like all Lonsdale products, we have never been let down” John Robinson, Robinson Glazing Services

  • Durable maintenance free polyester powder coated finish.
  • Suitable for double or single glazing.
  • Continuous thermally broken aluminium base bar, screw on pressure plate & external snap on cover.
  • Electric or manual ventilators available.
  • Integral drainage channels & high performance gaskets provide maximum weather-tightness.
  • Robust glass stop prevents glass slippage.


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