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Buckingham Palace Art Galleries
Internal appearance
Hook J&I School
Domestic project with internal blinds

Our Skyline type glazing bar range was originally developed to give specifiers an alternative to our traditional external stalked glazing bars. The low profile external aluminium capping offers a smart appearance to the external façade of the patent glazing system. As with our other aluminium sections the bar and caps are extruded to our own dies from grade 6063 temper T6 aluminium alloy.

The glazing bar's strength is provided by an internal stalk (or web) and is weathered by a screw on pressure cap with the option of an additional snap-on cap (ref. PC2) to conceal all fixing positions.

As the majority of the glazing bar resides permanently on the inside of the building, it therefore maintains a higher temperature. Consequently, this system provides a lower thermal transmittance than an external stalked glazing bar where a wider surface area is in contact with external elements. A thermal break is included for double glazed installations to further reduce the effects of cold bridging.

The Skyline glazing system is suitable for double glazed applications where compliance with Building Regulations Document L are a requirement but is also popular for single glazed applications such as feature canopies.

 

 
 

When used with double glazing and thermal breaks this system is capable of providing an overall U Value of approximately 1.8W/m²K.

To maintain a low profile within the roof line we remove the internal part of the glazing bar, called the ‘stalk’ at the top and bottom positions where the bars are secured to the supporting structure. A small tolerance is incorporated to allow for some variation within the finished structure, however, accuracy is required within the structure otherwise any variations will become apparent. See image below showing how the stalk is cut away.

         
Bar Section
Depth mm
Ix-x cm4
Zx-x cm3
Maximum Span Roof Single Glazing
Maximum Span Roof Double Glazing
Maximum Span Vertical Single Glazing
Maximum Span Vertical Double Glazing
PLEASE NOTE
Maximum glazing bar spans are for guidance only. We will select the appropriate glazing bar for each contract. Spans are dependent upon the pitch of glazing, glazing bar centres, building shape, wind load, snow load, dead load and maintenance load.
SPG2
70
17,366
3,893
2000mm
1600mm
3000mm
2400mm
SPG3
90
41,123
7,299
3500mm
3000mm
3800mm
3000mm
SPG4
115
111,709
17,848
5000mm
4000mm
4900mm
3850mm