Zyle Fenster – Bespoke Aluminium and Aluclad Window Specialists

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Traditional Spring Sash Windows

Spring sash windows offer a cost-effective alternative to traditional box sash designs. They deliver classic style, but incorporate a simpler, more compact and modern spring balance mechanism in place of weights and pulleys.

In other respects, spring balanced sash windows display all the benefits of our traditional timber sashes, with unrivalled quality, design and engineering.

Double-glazed as standard, they are available with safety glass, obscured glass, acoustic glass or solar control glass. Triple glazing is also available for larger contracts. Twin gasketing ensures reliable weather containment.

These spring sash windows are well chosen for mid-range new developments, as well as replacing classic windows on non-listed buildings.

(For historic and listed buildings, we recommend you browse our heritage windows and doors.)

Sash windows Zyle Fenster
Frame
55 x 160 mm (lining width x frame depth), manufactured using mortise and tenon joints, glued and mechanically fixed.
Sash
39 x 55 mm top rail and stiles, 90 x 55 mm bottom rail, 45 x 55 mm meeting rail.

Mullion / Transom

110 mm wide (70 mm for triple sash with fixed outer sash).
Sill Projection
35 mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm
Staff / parting beads
Timber
Wood moisture content
12-19%
Glazing beads
Internally beaded.
Material
Frame+Sashes Engineered redwood, Bottom Cill in Solid Hardwood – Standard. Engineered hardwood, Accoya, European oak.
Finish
Three coat spray applied factory finish using water based micro-porous paint/ stain.

Colour

White – RAL 9016 – Standard. Any RAL – from RAL classic range. Stain – from TRC stain range.
Glazing
Double glazed, 4/16/4 Low-E top sash – 4toughened/16/4 toughened bottom sash – Standard, Ug-value: 1.1 W/m²K; g-value: 0.52;
U-value
1.5 W/m²K – double glazed.
Perimeter spacer bars
White warm edge perimeter spacer with white warm edge integral spacers – Standard. Silver and Black spacer optional.
Frame profile moulding
Ovolo 1, Ovolo 2, Lambs Tongue 1, Lambs Tongue 2.
Trickle ventilation
Concealed through frame head trickle ventilator. EA 1700, 4400, 5000 mm²
Child restrictor
Angel lock standard. Traditional Sash Stop optional.

Traditional Sash Windows Gallery






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