ThermGard Self Supporting Glazing Bars
ThermGard Slim-line supported roof system
A neat 40mm wide box bar design, ThermGard provides a cost-effective alternative to more expensive sloped curtain walling systems without sacrificing aesthetics. Various slim-line box rafters are available to suit small or large spans. Alternatively the carrier rail may be used in conjunction with a wall plate or mounted on top of continuous timber eaves beam rafters – see our ThermGard-R glazing bars. A continuous screw on pressure plate with gaskets 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.
Ideal for conservatory roofs and car ports, our self supporting glazing bars offer easy installation and a stylish appearance.
“Lonsdale is our ‘go-to’ company when we need a quality rooflight system”
– Stuart Wood, Ingleton Wood Architects
Span Table
| Section | Single Glazing (mm) | Double Glazing (mm) |
|---|---|---|
| ALM 100/1 | 3000 | 1900 |
| ALM 100/2 | 3800 | 2900 |
| ALM 100/3 | 4400 | 3600 |
| ALM 100/4 | 5000 | 4000 |
| ALM 100/5 | 5500 | 4500 |
| ALM 100/H6 | 3000 | 1900 |
| ALM 100/H7 | 4200 | 3450 |
| ALM 100/H8 | 5000 | 4000 |
Please note the above table is for guidance only, for although the glazing bars can be used in compliance with the requirements of BS5516 ThermGard maximum recommend spans may not always comply. If in doubt please contact our Technical Department. A more detailed table is published in the LMC Design guide.
Glazing Width = Glazing Bar c/c minus 13mm or minus 15mm if using thermal barrier
ThermGard is a tried and tested product installed throughout the UK. Some notable projects include The British Museum, Windsor Royal Opera House, ILVA stores, the US Ambassador’s Residence and McArthur Glenn Outlet Village, Bridgnorth.
Our Other Glazing Bar Brands
If self supporting roof systems aren’t suitable for your project, we also offer a selection of other brands for domestic and commercial projects.
Self Supporting Glazing Bar FAQs
What is BS5516?
BS5516 is the global standard for two-edge and four-edge patent glazing systems that use glass and plastic glazing sheet materials. It provides structural and design recommendations, including the minimum thicknesses of glazing and the types of plastics to use. This regulation helps ensure that glazing is safe to be installed.
What are gaskets?
Gaskets are continuous rubber seals which cushion the glass and provide a weather-tight seal. Without gaskets, water would trickle into your building and collect around the glazing, which can lead to deterioration and condensation.
Why is ventilation important?
Ventilation is vital to prevent condensation build-up. Should condensation develop, mould will breed and may encourage the deterioration of the silicone seals that surround your glazing. Mould can be difficult to rid, especially when not treated properly. So, you should ensure that you have adequate ventilation in your rooms at all times.
Do you have more questions about our self supporting glazing bars?
Contact our team today and they can provide you with information on supporting lean to roof systems, installation, and delivery options.
