Systems
Roof Glazing: SPG
The SPG Patent Glazing System uses profiles of 60 mm and 50 mm width with a small up-stand on the primary profiles which offers structural performance. The solid profiles are glazed by either using beading or a clamp plate construction. The system is ideal for use in external applications and canopies.
Glazing
Note: All Glazing should be carried out to the recommendations of B.S.6262.
Single glazing sections are designed to take glass thicknesses of 6mm and 6.4mm.
Each pane of glass may be individually inserted into its' own fully rebated and prepared opening. Purpose designed gasket seals are used on all sections to both the outside and the inside for aesthetic appearance from the visible surfaces of the installation.
Glass is retained in position by either beads or by pressure plates screwed into extruded screw ports in the top of the main bars. Cover caps may be used to conceal the main bar fixing screws.
For double glazing a standard unit thickness of 24mm has been adopted as the standard.
Double glazing is carried out in the same manner as single glazing.
Site Installation
Site fixing of finished frames should take into account all applicable standards with regard to both the method employed and safe working practices.
Frame fixings should be suitable for the purpose given site conditions and materials into which the installation is to be made. If in doubt, please check with your fixings supplier regarding type and method to be used.
It should be remembered that Patent Glazing Bars may be used in Vertical Applications as well as Sloping Roof Applications.
Weather Performance
As the system is predominantly use in external applications such as canopies there are no recognised standards for testing.
Thermal Performance
Thermal performance of our systems depend on too many variables to determine a simple statement. Varying standards of insulated glazing units, profile selection, product size and mullion spacing combine to provide a unique 'U' value per window, door of curtain wall facade. At Senior Architectural Systems we use the most up to date designs and materials in order to offer the highest performance systems and products on offer in the UK. To determine the thermal performance of a specific proposed installation please consult your chosen supplier or Senior Architectural Systems who would be pleased to undertake a specific calculation. By varying glazing specifications and system/profile selection, high insulation, specific overall 'U' values required can be achieved.
The SPG Patent Glazing system is designed to offer a lightweight roof glazing system for use in new or refurbished construction. Due to its slim sightlines it is recommended that advice is sought to ensure structural integrity.
Materials
Extruded aluminium is Aluminium Alloy 6063.T6 to BS 1474, 1987
Anodising: i) Natural (Silver) anodised to BS3987, 1991. and ii) Anolok Bronze Colour 547 anodised to BS3987, 1991. Anodising is to a minimum of 25 microns (AA25).
Powder Coating is to BS6496, 1984.
Gasketry is manufactured in accordance with BS3734 and BS7412, cat A.
Finishes
Aluminium profiles are normally supplied coated using the powder coat method. Powder coat is available in a wide range of standard colours and surface finishes. Bespoke colours can be provided but may be subject to extended delivery times. Aluminium can also be clear anodised in either satin or polished finish and a limited range of colours, which includes bronze and black, is also available.
Construction
SPG and S27 Patent Glazing Sections, whether single or double-glazed, are typically installed using mechanical methods and butt joints
Assembly involves the initial installation of the main roofing bars onto a structural supporting frame, followed by the added use of horizontal purlin bars or joint came sections.
SPG sections operate on a beaded, Tee format base (stalk up) and use clamped purlin bars. S27 sections are designed on a cruciform base (stalk down) and use screw on pressure caps to the main bars with 'H' section joint cames for purling jointing of glass.
A proprietary sealant to protect against water entry should always be used on all metal-to-metal joints during installation.
Extruded brackets are used to secure the main bars to the structure and a draught excluder for the eaves position is include as part of the system. All sections are designed for glass installation only.
At all times good working practices should be employed.
Fabrication
Senior Architectural Systems SPG Patent Glazing systems are designed to facilitate assembly with a minimum of equipment. It is however advisable that a positive approach be made to available machinery, and it's use, to ensure good quality of finished work with any aluminium product.
