Hybrid Series 1 Composite Casement Window System [Curtain Wall Placement]

A range of hybrid, composite aluminium and timber window systems, available in standard sizes.


  • 83 mm high performance window system, with 68 mm wide timber frame.
  • Achieves very high thermal insulation values.
  • Aluminium outer frames and timber inner frames.
  • Timber for the internal frames is available from stock within the UK, and is from sustainable forests.
  • Tested in accordance with BS 6375-1 – test reports are available from Senior Architectural Systems Ltd.


  • Constructed using mitred joints on both the aluminium and timber frames.
  • Using a mechanical corner joint on the aluminium frame and dovetail keys on the timber frame enables the frames to be constructed without the need for complicated production processes.
  • Integral transoms and mullions are inserted by scribing the ends and screw fixed to the frame.
  • A sealant is used on all metal joints, the timber mainframe sections are mitre jointed using a unique closed joint method.
  • Opening window frames are designed to be inserted directly into the outer frames using friction stays.

General information



800 x 800 mm.


1000 x 1000 mm.


1200 x 1200 mm.


1230 x 1480 mm.

As drawing

Non standard size.

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Aluminium, glass and timber

Uniclass 2015

Pr_30_59_98_15 Composite window unitsPrimary


L10/25 Aluminium windows

L10/33 Proprietary windows

L10/330 Aluminium windows

Specification data - Composite window units

Product Reference

Hybrid Series 1 Window


Flush Casement


Side Hung Open Out

Tilt and Turn

Top Hung Open Out



800 x 800 mm.


1000 x 1000 mm.


1200 x 1200 mm.


1230 x 1480 mm.

As drawing

Non standard size.

As schedule

Insert details.

Colour/ Finish


Timber frame

Matt lacquer

Water based paint

Insert colour requirements.

Aluminium cladding


Polyester powder coated, RAL

Insert details.

Glazing details

As standard

Standard product features

Interior frame/sash section:

  • Purpose engineered profiles in spruce laminated timber (Scantlings); in principle without faults (knots and flaws).
  • Certificated to IFT Rosenheim, DIN EN 204 glued with D4 glue.
  • Finger joints in outer layer minimum 500 mm centres.
  • Moisture content: 12% +/- 2%.
  • PEFC /04-32-0042 Certified.

Consult manufacturer for other timber species, special order.

Exterior aluminium cladding:

Extruded aluminium alloy 6060 or 6063 T6 to BS EN 755-9:2008.


  • Polyamide thermal barriers are manufactured in accordance with PA66 GF25.
  • Gaskets are manufactured in accordance with BS 3734.

Performance (Exposure category to BS 6375–1):

  • Air permeability: 600 pa.
  • Water tightness: 600 pa.
  • Wind Resistance: 2400 pa.


Varies depending on type and size of window, consult manufacturer for exact details.


Tested to BS 7950, security hardware required.

Product Options

Typical sizes:

- Flush Casement:

  • Width: 1200 mm.
  • Height: 1200 mm.

- Overswing:

  • Width: 1500 mm.
  • Height: 1500 mm.

- Top Hung and Side Hung:

  • Width: 900 mm (side hung); 1500 mm (top hung).
  • Height: 1200 mm.

- Tilt and Turn:

  • Width: 1200 mm.
  • Height:1200 mm.

Colour/ Finish:

- Timber frames:

  • Matt Lacquered finish on spruce, 150–300 micron wet film thickness or water-based paint in any colour, consult manufacturer for details.

- Aluminium cladding:

  • Available in any polyester powder colour from Senior Architectural Systems Ltd's in-house paint facility, in gloss, matt or satin finish.
  • Anodized finish is also available.


  • 28 mm double glazing as standard.
  • A variety of glass options are available - contact Senior Architectural Systems Ltd for details.

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