New! ThermGard TG50 Roof Glazing System

  • Wide Spans
  • Low Pitch
  • Non-Fragile

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Lonsdale Roofing

ThermGard TG50 Aluminium Rooflight System

ThermGard TG50

Setting the Standard for Safe & Weather-Tight Glass Roofs

  • Non-Fragile Class 2 CWCT TN66/67 & TN92
  • Thermally Efficient Double, triple and solar control options
  • Air-Tight Class 4 to BSEN12207
  • Weather-Tight Class E1650 to BS EN12208
  • ThermGard TG50 Aluminium Rooflight System

    ThermGard TG50 Aluminium Rooflight System

    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.

ThermGard TG50

  • Thermally broken aluminium sloped glazing system suitable for commercial, public and domestic buildings.
  • Outstanding air-tightness and weathering performance independently certified.
  • Suitable for double or triple insulating glass units.
  • Designed to conform with the requirements of BS5516 2004 Parts 1 & 2 for the design & installation of sloping and vertical patent glazing when installed within the manufacturers recommendations.
  • Variable pitch down to minimum 5 degrees.
  • Wide centres and long spans means less metal and more daylight.
  • Materials are supplied Mill Finish as standard or may be polyester powder coated to standard RAL or BS colours to BS6496.
  • Tested to CWCT TN66-67 and classified Class 2 Non-Fragile. May be deemed to comply with CWCT TN92 when used with recommended glass specifications.


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What is “Solar Control Glass”?

Solar control glass is a type of glass that minimises the heat a building may intake from the sun, and rejects solar radiation. Solar radiation produces glare, but solar control glass counteracts it. This type of glass is essential during excessively warm periods as it prevents overheating inside the building. 

What is BS EN12207?

This standard refers to the air permeability of windows and doors, and ensures that your glazing effectively prevents water ingress. 

What are the properties of aluminium?

Aluminium is used often for industrial purposes as it is incredibly easy to cast, machine and form. It can be bent into any shape while still harbouring impressive strength and is celebrated as the second most malleable metal. Additionally, aluminium has excellent corrosion resistant properties which protect it from deterioration caused by condensation. 

What are the benefits of natural light?

Natural light hosts many benefits to the mind and body. For example, solar energy encourages the body to produce vitamin D, improves sleep patterns, encourages focus, and boosts mood. There are also practical benefits to natural light, as it negates the need for artificial lighting throughout the day which can help you to save money on your energy bills.