BOX SASH WINDOWS

STRUCTURAL DESIGN

Replacing your original timber sash windows couldn’t be easier with a beautifully hand-crafted PVCu sash window. Retaining all the original style and elegance with the addition of increasing the energy efficiency within your home.

The operation of two sashes within an outer frame work independently of each other, on a balance mechanism, designed to hold each sash at any height. The multi chambered outer shell frames the galvanised steal reinforced sashes that conceal the gasket and weatherseals giving a clean look as well as improving long term environmental weathering. The high quality material is prevented from cracking, warping or degrading.

  • INTERNAL FRET
    Located inside the glass unit only, available in 18mm and 25mm options

  • ASTRAGAL BAR
    Back-to-back spacer located inside the glass unit. Surface bars applied to the internal and external faces of the glass unit. Available in 20mm and 25mm.*

    (*Available as single bar only.)

Our Sliding Sash windows are amongst the most thermally efficient available in the UK today. ‘B’ rated as standard with ‘A’ rated options available.

There have been significant transformations over the past decade in order to achieve the very best thermal performance. The sliding sash windows have been tested in accordance with:

  • Air permeability
  • Watertightness
  • Wind resitance
  • Weather testing

The glass specification is the most significant component when affecting the windows overall thermal efficiency. Each sliding sash window is supplied as standard with 24mm Low E double glazed units incorporating Edgetch’s Superspacer bar manufactured in accordance with British Standards.

Options vary from 1.7kW/m2K as standard to 1.4W/m2K by combining argon gas filling and soft-coat glass.

UNLIMITED COLOURS

Sliding sash windows are available in a wide variety of RAL colours and standard smooth and wood-grain options. If you would like to discuss other bespoke colours please contact us to arrange a consultation.

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