Windows
Liniar 70mm uPVC Casement Windows
The most popular style of uPVC window in the UK — timeless, versatile and now built on Liniar's market-leading multi-chambered 70mm profile. We specialise in them, so we get them right every time.
Why Liniar 70mm?
Liniar has updated the classic casement with a slim, sculptured 70mm profile — the same width as the industry standard, but with better thermals, cleaner sightlines and a stronger seal.
- Multi-chambered 70mm profile for high thermal efficiency
- EnergyPlus six-chamber upgrade — A+ rated with cost-efficient double glazing
- U-values as low as 0.8 W/m²K (triple glazed)
- Sculptured profile — classic styling
- 28mm double or 36/40mm triple glazing options
- Fully recyclable, 100% British-made uPVC
- Slim sightlines maximise natural light
- Internally beaded for improved security
0.8
W/m²K
Triple-glazed U-value
70mm
profile
Multi-chambered frame
A+
rating
Energy performance
Beautifully manufactured. Expertly fitted.
Every window is surveyed and manufactured to exact spec, then can be fitted by an independent installer from our trusted fitting network. No surprises — just tidy work and a guarantee we stand behind.
Request a quote