Patent Glazing & Rooflights Quotes
Quick Guide to Products
Which system to use?

Unheated Spaces, canopies, station and platform glazing SkyGard should be your first choice if using 6 to 7mm thick glass. If considering different glass thickness, then PlasGard would be your next choice

Heated Spaces
ThermGard is our thermally broken system providing excellent Uvalues and air-tightness when combined with insulating double glazed units for compliance with Building Regulations Part L.

Self-supporting Lanterns or SkyLights
SpanGard self-supporting rooflights feature extruded cill, ridge & hip members to provide you with a complete kit pre-fabricated upto 6m wide by infinite length without the need for additional support, other than a load-bearing curb.

If using Polycarbonate
PlasGard offers a range of glazing bars & accessories for use with 'plastic' glazing materials for unheated spaces. If you require a thermally broken system, then please see our ThermGard ALM500 Series

Rafter Glazing
If fitting glazing bars on top of continuous timber rafters, then section reference ALM100/WF suitable for single or double glazing from our ThermGard range, provides neat, low-profile appearance combined with excellent weather tightness and low-maintenance.

Need ventilation?
GlazaTherm roof vents can be incorporated in sloped glazing and fitted with manual, electric or smoke actuators. Alternatively we can provide casement vents in the upstands of lantern lights when required.
Consult the experts
Tel: +44(0)208 801 4221
Email: info@lonsdalemetal.co.uk

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Quick Guide to Products
Which system to use?

Unheated Spaces, canopies, station and platform glazing SkyGard should be your first choice if using 6 to 7mm thick glass. If considering different glass thickness, then PlasGard would be your next choice

Heated Spaces
ThermGard is our thermally broken system providing excellent Uvalues and air-tightness when combined with insulating double glazed units for compliance with Building Regulations Part L.

Self-supporting Lanterns or SkyLights
SpanGard self-supporting rooflights feature extruded cill, ridge & hip members to provide you with a complete kit pre-fabricated upto 6m wide by infinite length without the need for additional support, other than a load-bearing curb.

If using Polycarbonate
PlasGard offers a range of glazing bars & accessories for use with 'plastic' glazing materials for unheated spaces. If you require a thermally broken system, then please see our ThermGard ALM500 Series

Rafter Glazing
If fitting glazing bars on top of continuous timber rafters, then section reference ALM100/WF suitable for single or double glazing from our ThermGard range, provides neat, low-profile appearance combined with excellent weather tightness and low-maintenance.

Need ventilation?
GlazaTherm roof vents can be incorporated in sloped glazing and fitted with manual, electric or smoke actuators. Alternatively we can provide casement vents in the upstands of lantern lights when required.


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Manufacturers of Rooflights, Patent Glazing and Glass Roof Panel Systems



Lonsdale specialise in the manufacturing of advanced patent glazing and rooflight systems. Founded in 1946, we have become one of the UK’s most dependable names when it comes to glass roof panels, and our systems are installed in a large number of commercial and domestic buildings throughout the country.

Offering a complete patent glazing service to contractors, our rooflight systems are designed, specified and installed via our network of registered dealers to the highest of standards. Our glass roof panels and glazing bars come in several ranges such as our SkyGard glazing bars, which are ideal for large unheated spaces such as rail platforms or canopies, and our ThermGard system, which is designed for heated spaces and gives better thermal performance. We have patent glazing products to cover all commercial, domestic and conservatory rooflight applications. More details on our glazing product specifications can be found on the appropriate page.

If you are not sure which rooflight system you need, then try our QuickGuide. Alternatively, please consult one of our patent glazing experts by calling +44(0)208 801 4221. Lonsdale are committed to providing high quality, safe and technically brilliant glass roof panel systems; discuss your requirements today and quickly discover why we are the preferred choice for so many professionals in the glazing industry up and down the UK.



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