Clear Glass
Standard float glass, economical and versatile.
VLT ~89%
Window Series
Single UPVC Window
Single-hung windows from SKATE deliver a cost-effective vertical sliding design with a fixed upper sash and operable lower sash, combining energy efficiency with clean, timeless aesthetics.
Air leakage ≤ 0.2 cfm/ft²Water tightness E900 PaSound insulation Rw 36–41 dB
Request a QuoteTechnical Specifications
Fitted with HOPPE / GIESSE / Winkhaus hardware — see our component partners
Options & Customization
Specify glass, color, screens and hardware for your project — all factory-direct from SKATE.
Clear Glass
Standard float glass, economical and versatile.
VLT ~89%
Ultra-Clear (Low-Iron) Glass
Minimal green tint, maximum clarity and color fidelity.
VLT ~91.5%
Low-E Glass
Microscopic metallic coating reflects heat, keeps interiors comfortable.
U-value ↓ ~30%
Ultra-Clear Low-E
Low-iron base + Low-E coating: clarity with insulation.
Best visual + thermal
Double-Silver Low-E
Two silver coating layers: blocks solar heat, admits light.
SHGC ↓ significantly
Ultra-Clear Double-Silver Low-E
Premium: low-iron clarity + double-silver performance.
Flagship glazing
Frosted Glass
Acid-etched translucency for privacy with soft light.
Bathrooms, partitions
Switchable Smart Glass (PDLC)
Electrically switches between clear and opaque instantly.
Privacy on demand
Tell us your glass, color and hardware preferences in the quote form — we'll spec it for you.
Request a Quote →Product Overview
Single UPVC Window – Cost-Effective Ventilation, Lasting Quality
A single UPVC window — also known as a single-hung window — is a vertical sliding window in which the lower sash moves up and down for ventilation while the upper sash remains fixed in place. This simplified sliding mechanism makes single UPVC windows one of the most economical window options on the market without sacrificing the clean visual appearance and functional ventilation performance that homeowners expect. SKATE's single UPVC windows are engineered with multi-chamber uPVC profiles, high-performance Low-E glazing options, and durable hardware to deliver lasting value across a wide range of residential and light commercial applications.
Single vs Double Hung — Understanding the Difference
The key distinction between a single UPVC window and a double-hung window is the number of operable sashes. In a single-hung window, only the lower sash slides, while the upper sash is permanently sealed. This design offers several practical advantages: the fixed upper sash provides a more rigid, airtight frame section that can accommodate larger glass sizes without risk of sash misalignment over time; the balance mechanism is simpler and less expensive; and the overall frame system is lighter, making single UPVC windows easier to install in framed wall openings.
For most residential applications where ventilation is only required from the lower portion of the window — as is the case in the vast majority of living rooms, bedrooms, and kitchens — the single UPVC window provides all the functionality needed at a noticeably lower price point than a fully double-hung alternative.
Single-Hung Window — Frequently Asked Questions
No. The fixed upper sash is structurally more rigid than an operable upper sash, providing a more secure frame overall. The lower sash lock provides comparable security to double-hung window locks.
Related Products
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