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Our Skyline Box range of glazing bars offer an economical roof glazing solution when compared with curtain walling roofing systems. The glazing bar's strength is provided by an internal box section. The glazing bar is weathered by a screw on pressure cap (PC1) with a choice of plain (PC2) or ornate (PC3) cosmetic outer snap-on cappings to conceal all fixing screws.



When used with high performance double glazing units with warm edge spacer bars and argon gas filling this system can achieve an overall U Value of 1.4W/ m²K to comply with Building Regulation Document L.


Our Skyline range of glazing bars offer an economical roof glazing solution incorporating slim sightlines. The glazing bar's strength is provided by an internal stalk (or fin) which is cut away at the top and bottom main fixing positions.
An internal snap-on ornate capping system (PC4) is also available if desired to fully conceal the internal stalk giving the appearance of a feature timber rafter.



When used with high performance double glazing units with warm edge spacer bars and argon gas filling this system can achieve an overall U Value of 1.4W/ m²K to comply with Building Regulation Document L.


Timber rafters (supplied by the builder or joinery sub-contractor) will create an appealing visual effect inside any home and are totally protected from the effects of weathering by our externally clad Rafterline Patent Glazing system.
Due to the pleasing aesthetics of aluminium and timber materials our Rafterline system is the most popular specifiers choice for domestic projects.



When used with double glazing and thermal breaks this system is easily capable of providing an overall U Value of 1.6W/ m²K to comply with Building Regulation Document L.


Our Traditional patent glazing system remains our customers most popular choice for use on unheated spaces such as Railway Stations, glazed canopies and covered ways where thermal properties are not a consideration.
This system has been installed on thousands of projects nationwide and is available with a choice of capping systems to suit your needs.
A truly great glazing system combined with economy and a proven track record. 30,000m² of this glazing system has been installed by us on many major railway stations throughout the UK in recent times.



This system is capable of accommodating solid or multi-wall polycarbonate sheets or double glazed units up to 28mm thick if used on unheated spaces or where compliance with Building Regulations Document L are not a consideration.


Our 'Heritage' Patent Glazing Bar range is truly unique amongst roof glazing systems; there are no alternative products available on the market which can match an original lead covered steel patent glazing bar which originates from the Victorian era. This range has been manufactured by us unaltered for over a century and is the perfect product for listed buildings and for use in the refurbishment of significant and historic buildings. This system is also still very popular for new build projects and should not to be overlooked on today's modern buildings where a unique character look is desired.

 


Patent Glazing is not intended to withstand loads imposed by the structure to which it is attached.
Our patent glazing systems are designed to resist the most adverse combination of loads likely to occur, such as dead load (self weight), wind, snow and where necessary, maintenance.

 

 
  • Structural Requirements



Consideration should be given to how readily the patent glazing will be accommodated by the structure, therefore, consultation with us at design stage is recommended for most contracts.

The dimensional and positional accuracy of the supporting structure is of prime importance.

Patent glazing systems can overcome slight discrepancies in the structure of approximately 1.5mm per pane width, but tolerances above these can have an effect on the integrity of the system.

It is therefore usual for the opening sizes to be surveyed on site once the structure has been fully formed to ensure that the glazing is designed to fit the true site conditions.



Very often when we attend site to survey a structure which will receive the patent glazing system we encounter inconsistencies within the opening sizes. What is intended to be a rectangular shaped opening with parallel sides has a habit of not being as true as we desire!

If the structural head and eaves fixing rails are supplied at the minimum possible widths and it is found that the structure is out of square then this can usually only be remedied by designing every pane of glass to be shaped to suit the site conditions. This will result in extra drawing office time, manufacturing time and on-site installation time. Obviously there are cost implications that result from the structure being out of square.

It is therefore sometimes preferable for the top and bottom structural rails to be designed wider than originally deemed necessary if the supporting structure for the patent glazing cannot be installed to reasonable tolerances. This design change can then allow for larger tolerances even when the structure is somewhat out of square.

We also encounter problems when the supporting structure has not been properly designed to accommodate a roof glazing system. This may lead to the requirement of secondary steelwork or timber rails to enable the glazing system to fit the opening and be weathered properly at the interface junctions with the rest of the building.

Please view our very many standard interface drawings giving guidance on how to design a suitable supporting structure for our patent glazing systems and do not hesitate to contact us by telephone or email if you require any clarification. We would be pleased to review your design drawings at the earliest stage to comment on them and offer suggestions if needed.