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The S27 System single or double glazed patent glazing is suitable for vertical or sloping applications, including extended rooflights and canopies. It is a glazing system with the structural stalk on the inside of the building. S27 is available with non-thermal or thermally assisted glazing bars. Glazing is by external pressure plates, with clip covers where the fixings require concealing.

The system provides a weathertight roof down to a pitch of 15°. It is compatible with SAS windows, SAS shopfronts/ entrances and SAS curtain wall for a total facade service.

Design, installation and glazing service is available through a nationwide network of installers.

Composition and manufacture:

  • Aluminium alloy: 6063, T6 to BS 1474: 1987.
  • Insulation materials: Rigid PVC.
  • Gasketry: PVC Nytrile to BS 3734 and BS 7412 Cat A.


  • Maximum bar spacing: 1200 mm.
  • Maximum height: To suit conditions.

General information
Specification data - Aluminium patent glazing bars
Product Reference

S27 Patent Glazing System

Glazing bar -

Extruded aluminium


Anodized, colour ___

Mill aluminium

Polyester powder coated, colour ___

Minimum film thickness

Not applicable

Mill finish.

___ micrometres


___ mm

Bottom overhang/ lap

___ mm

Pane/ infilling materials

Insulating glass units, ___ mm thick

Single glazed panes, ___ mm thick

Standard product features


Traditional bar, two edge supported.

Product Options

Finish/ Colour:

Mill finish is from stock. Anodized and polyester powder coated finishes are available to order. Consult with Senior Architectural Systems for colour range.

Minimum film thickness:

Consult with Senior Architectural Systems following choice of finish.

Pane/ Infilling materials:

Senior Patent Glazing systems are designed to accommodate various glazing options from 6 mm to 34 mm overall thickness.

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