The Standard Patent Glazing Company Limited

The Heritage Lead Covered Steel Patent Glazing bar encapsulates the very essence of the Patent Glazing tradition. The glazing bar design originates from Victorian enterprise and ingenuity. The glazing bar consists of a galvanised rolled mild steel core which is inserted into a seamless lead extrusion covering that incorporates a twin wing weathering system and glass seatings. The ends of the lead covers are then soldered to give a hermetic seal. Cast brass fixing plates and glass stop are screwed on to produce the finished glazing bar. This system is offered today for the replacement, refurbishment and upgrading of grade 1 & 2 listed buildings, buildings of historic value or other prestigious projects.

Our low profile thermally broken aluminium framed opening vents are suitable for installation in both sloping and vertical applications and are generally manufactured to a maximum size of 750mm wide by 1500mm deep. In a typical roof application, its recommended location will be at the top of the patent glazing, although in certain instances these vents can be positioned in the centre or lower parts of the glazing by using alternative top and bottom panel sections. Depending on the size of opening vent and gearing type used the general maximum stroke length achieved will be in the region of 400mm.

The Rafterline glazing bars strength is provided by others structural timber rafters x 50mm wide (44mm minimum) and the maximum span of this system is therefore only limited by the integrity of the rafters. The advantages of this system are that the timber rafters create an appealing visual effect inside the building and are totally protected from the effects of weathering from the elements. The external aluminium glazing system will provide excellent weather resistance and is not subject to the regular maintenance required for timber glazing systems. This system readily accepts both single glazing, double and triple glazed units up to 50mm thick and as with all our systems, can be combined with opening vents to offer a total glazing solution.

The company's Skyline Box range of extruded aluminium glazing bars offer an economical roof glazing solution when compared with curtain walling roofing systems whilst maintaining a very similar appearance. The glazing bar's strength is provided by an internal box section. This system is able to accommodate double and triple glazed applications where compliance with Building Regulations Document L are a requirement but is also popular for single glazed applications such as feature canopies and unheated spaces. Available in four sizes depending on the design span with box section depths of 50mm, 75mm, 100mm and 150mm. This glazing system is capable of spanning up to 7 metres unsupported with double glazed infills weighing 30kg/m².

The 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. This system is able to accommodate double and triple glazed applications where compliance with Building Regulations Document L are a requirement but is also popular for single glazed applications such as feature canopies and unheated spaces. Available in three sizes depending on the design span with fin depths of 50mm, 70mm and 100mm. This glazing system is capable of spanning up to 4 metres unsupported with double glazed infills weighing 30kg/m²

At Standard Patent Glazing Co. Ltd, we’ve led the UK patent glazing industry since 1902, offering over 120 years of British craftsmanship and innovation. We provide full in-house services—design, manufacture, installation, and aftercare—ensuring complete quality control without subcontracting. Our systems range from thermally efficient options like 4Edge Pro and Skyline to our unique Heritage lead-covered steel system for listed buildings. Trusted on projects such as Victoria Baths, Leeds Art Gallery, and Victoria Coach Station, we combine tradition with cutting-edge performance. With ISO accreditations and a key role in shaping BS5516, we deliver glazing solutions built to last.

The company's traditional patent glazing bars are designed to receive single glazing of any thickness and are also suitable for accommodating solid and multiwall polycarbonate sheets up to 30mm thick. It is possible to incorporate double glazed units into this range of glazing bar when compliance with Building Regulations Document L is not a requiremnt. The glazing bar is an inverted 'T' design and its strength is provided by the external stalk (or web). The outer surface can be weathered by a choice of extruded aluminium screw-on and snap-on cappings or extruded aluminium screw-on wings. A 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.