Heritage Patent Glazing System
Patent glazing system with lead-covered steel patent glazing bars.
To be used to the external facade of a patent glazing system on grade 1 and grade 2 listed buildings and historic buildings, and can accommodate the following:
- Replacement, refurbishment and replacement projects.
- New build projects where a traditional design is required.
- Glass roofing, including self-supporting hipped rooflights, lanterns and polygonal shaped rooflights.
- Double and triple glazed applications.
- Single glazing applications.
- Lean-to and duo-pitched designs.
Two edge supported patent glazing system with lead-covered steel patent glazing bars.
Features and benefits:
- Designed to produce a traditional Victorian style.
- The glazing bar consists of a galvanized, rolled carbon steel core which is inserted into a seamless lead extrusion covering, incorporating a twin wing weathering system and glass seatings.
- The ends of the lead covers are soldered to give a hermetic seal.
- Original design cast brass fixing plates and glass stop are screwed on to produce the finished glazing bar.
- Can accommodate single and double glazing, and passes Advisory Committee for Roofwork (ACR[M]) and Centre for Window and Cladding Technology (CWCT) non-fragility tests in both single and double glazed formats.
- No capping is required.
- Can be combined with opening vents to offer a complete glazing solution.
- Manufactured in accordance with BS 5516: 2004 Code of Practice for the design and installation of vertical and sloping patent glazing.
Applications:
To be used to the external facade of a patent glazing system on grade 1 and grade 2 listed buildings and historic buildings, and can accommodate the following:
- Replacement, refurbishment and replacement projects.
- New build projects where a traditional design is required.
- Glass roofing, including self-supporting hipped rooflights, lanterns and polygonal shaped rooflights.
- Double and triple glazed applications.
- Single glazing applications.
- Lean-to and duo-pitched designs.
Finish | Glazing bars: Self-finished (lead covered) Aluminium accessories: Polyester powder-coated to BS 6496 in RAL 7015 slate grey matt |
Material | Rolled carbon steel inner cores with a minimum tensile strength of 355 N/mm² |
Uniclass 2015 | |
CAWS | H10/10 Patent glazing H10/115 Patent glazing |
Product Reference | Heritage Patent Glazing System |
Supporting structure | - |
Top | Suitably pitched steel railsSuitably pitched timber rails |
Intermediate | Not requiredSuitably pitched steel railsSuitably pitched timber rails |
Bottom | Suitably pitched steel railsSuitably pitched timber rails |
Glazing bar | LC5 SGDepth: 45 mm. Not available for use with double glazing. LC7 DGDepth: 53 mm. Not available for use with single or canopy glazing. LC7 SGDepth: 53 mm. Not available for use with double glazing. |
Slope | 15°20°25°30°35°40°45° |
Infill | Consult manufacturer's literature and insert requirements. |
Opening vents | - |
Type | Not requiredBottom hung, thermally brokenNot available for single glazing. Side hung, thermally brokenTop hung, thermally broken |
Quantity | 1–20. Consult manufacturer and insert requirements. If opening vents are not required, insert N/A. |
Operation | Not applicableElectric control - chain actuator, 24 VElectric control - chain actuator, 230 VElectric control - linear actuator, 24 VElectric control - linear actuator, 230 VManual control - screwjack gearPneumatic control - gas springs |
Controls | Not applicable/ not requiredCrank handleFor use with screwjack gear. Standard open/ close wall mounted switchFor electric actuators. Wall mounted thermostatic control panel with rain sensorFor electric actuators. |
Accessories/ Other requirements | Not requiredDress only lead flashingsTo perimeter positions (lead flashings measured elsewhere). Pre-formed sheet aluminium flashingsTo perimeter positions. |
Standard product features | Material: Rolled carbon steel inner cores with a minimum tensile strength of 355 N/mm². Finish:
Minimum film thickness: 40 µm. Glazing bar spacing: Approximately 600 mm centres. |
Product Options | Glazing bar: Consult manufacturer before specifying a particular glazing bar. - LC5 SG:
- LC7 DG: Double glazing: 1350–3270 mm. - LC7 SG:
Please note that the lower span values are calculated using the most extreme environmental loadings, whereas the higher span values are based on the least extreme. The manufacturer requests a site postal code to enable them to calculate the correct glazing bar type for every project. The glazing bar spans above are based on using 6 mm thick glass for the double glazed, single glazed and canopy types. Spans are dependent upon the site location and exposure rating, site altitude, distance from the sea, height of glazing from ground level, shape of the roof, pitch of glazing, glazing bar centres, glass weight, wind speeds, snow load, dead load and maintenance loads. Glazing infill: A variety is available, e.g. clear laminated, heat soaked toughened, etc. Consult manufacturer's literature for information.
An 18 mm Argon gas filled cavity with warm edge spacer bars is supplied for double and triple glazing. |