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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.
Consult the experts
Tel: +44(0)208 801 4221
Email: info@lonsdalemetal.co.uk
PlasGard Glazing Bars
SkyGard Glazing Bars
PlasGard Glazing Bars
ThermGard Glazing Bars
SpanGard Lanterns & Skylights
GlazaTherm Ventilators
Solar Panels

PlasGard Glazing Bars



PlasGard is a simple two part glazing bar with continuous screw on cap. Approved by all the major polycarbonate sheeting manufacturers for use with multi-wall and solid plastics, PlasGard is also suitable for single glazing with glass from 6mm to 25mm. Ideal for unheated spaces such as canopies, verandahs, car ports, shelters or rail platforms. Easy to install, PlasGard offers excellent value and a wider than normal glazing rebate for exposed locations or areas where bomb-blast mitigation is required.

"In my opinion PlasGard is one of the best & also one of the simplest glazing bars on the market. Our customers love it !" – Mr Rod Sens, Omega Building Products Ltd.

  • Quick and easy to fit continuous screw on cap
  • Suitable for polycarbonate or glass
  • Extra wide glazing rebates for exposed areas or bomb-blast mitigation
  • Glazing bar cross centres upto 1000mm wide (subject to span restrictions)


  • Click here for Fastrack CAD Download typical installation details.

    Click here for section profiles and typical installation details.

    Click here for Specification

    Span Table
    PlasGard maximum recommend spans between top and bottom fixings based on 600mm glazing bar centres for glass or 700mm centres for polycarbonate.

    Section Polycarbonate (mm) Single Glazing (mm) Double Glazing (mm)
    PLM 15 1500 - -
    PLM 17 2500 2000 1200
    PLM 20 4000 3400 2800

    Please note the above table is for guidance only, for although the glazing bars can be used in compliance with the requirements of BS5516 PlasGard 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.

    Glass Widths
    PLM 15 & 17 = Glazing Bar c/c – 20mm
    PLM 20 = Glazing Bar c/c – 14mm

    PlasGard is a tried and tested product installed throughout the UK and abroad. Some notable projects include Malmaison Hotel Manchester, Liverpool Limestreet Station, Jacobs Biscuit Factory, Waitrose and Sainsbury’s stores.
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