Aluminium Windows
Vertical Sliding Window
ENCRAFT Aluminium Vertical Sliding Windows are designed around a traditional sash-window concept, enhanced with the performance, strength, and low-maintenance benefits of modern aluminium systems. The configuration typically consists of two sashes, with one sash sliding vertically along the frame to provide controlled ventilation.
Vertical Sliding Window
Less Space, Smarter Window Design
ENCRAFT Aluminium Vertical Sliding Windows are designed around a traditional sash-window concept, enhanced with the performance, strength, and low-maintenance benefits of modern aluminium systems. The configuration typically consists of two sashes, with one sash sliding vertically along the frame to provide controlled ventilation.
The vertical sliding design is particularly suitable for narrow and tall openings, where the height of the aperture is greater than its width, including proportions approaching the golden ratio of 1:1.618. The system uses a pair of frame-specific, site-tensioned spiral balances, allowing the sash to remain securely open at different positions.
By combining the classic appearance of traditional sash windows with modern engineering, ENCRAFT's vertical sliding range provides a practical solution for contemporary architectural applications while requiring minimal maintenance.
Performance Specifications
Outer Frame Depth: 58 mm and 90 mm
Frame Split Options: 50/50 and 60/40 configurations
Maximum Frame Height: 1800 mm
Maximum Frame Width: 1200 mm
Maximum Load Capacity: 13.5 kg per sash
Glazing Options: Internal glazing from 4 mm to 22 mm, suitable for single and double glazing
Key highlights
- Ideal for Tall & Narrow Openings: Well suited for ancillary windows and apertures where height exceeds width.
- Bottom Sash Sliding: Provides convenient vertical ventilation through the sliding lower sash.
- Fixed Upper Light: Includes an option for a fixed glazed section at the top.
- Optional Fly Screen: Can be configured with a fixed fly screen.
- Spiral Balance System: Spiral balances are selected according to the sash weight and dimensions for controlled movement.
- Espagnolette Locking: The sash incorporates espagnolette locking with handle beads for secure and convenient operation.
Frequently asked questions
uPVC insulates far better and costs less for ordinary residential openings. Thermally broken aluminium is stronger, so it carries larger panels with slimmer frames. We usually specify uPVC for bedrooms, kitchens and bathrooms, and aluminium for very large sliders, stairwell glazing and anything above about 2.4 metres tall.
Not if the profile is UV stabilised and lead-free, which ours are. Yellowing happens with cheap unstabilised profile or recycled material. We supply a written warranty against discolouration.
An acoustic laminated inner pane inside a double-glazed unit, with the two panes at different thicknesses and a wide cavity. Just as important, choose a casement or tilt-and-turn window rather than a slider, because the sash needs to compress onto its gaskets to seal.
Yes. We bend profile on a heated forming table from a site template, so semi-circular, segmental and elliptical heads are all possible, fixed or with an operable lower sash.
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