Patent Glazing & Roof Lights
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
Architects and Specifiers
Main Contractors
Installers
Building & Home Owners

Architects and Specifiers


Patent Glazing Architects & Specifiers Lonsdale provides you with concise and reliable information to help designing and specifying glass roofs that bit easier. Follow our guidance and you can be sure your projects will feature safe and weather-tight roof glazing that will give many years good service.

Please take a look at the Design & Regulations pages on the website which are likely to answer any queries you may have. However, if you can’t find what you need, please contact our Technical Department where our experienced and helpful team can offer you further advice.

NBS H10 is the National Building Specification classification for patent glazing and you will find our QuikSpecs cover most of the typical instances and glass types for canopies, covered ways, smoking shelters, platform glazing, atria, hipped, gable ended, pyramid, octagonal, shaped or mono pitch rooflights, skylights or lanterns. Don’t miss these, as they will speed up the specification process for you considerably.

Lonsdale also provides a CPD Seminar which previous delegates have commented is amongst the best they have attended. We promise not to bore you, but really show you how the natural daylight provided by roof lights can enhance the design and environment of your building. Contact us for details.

Finally, see our library of CAD details illustrating section profiles and hundreds of typical installation details.

"Lonsdale rooflights are a valuable feature in our new build schools" – Mr Charles Flood,  Lyster Grillet & Harding
Video