90mm Casement Window
Part of the Passivhaus-certified Zero|90 range, Liniar 90mm uPVC casement windows stand in a class of their own. Ideal for both new builds and refurbishment projects, these windows achieve the best energy ratings in the UK for uPVC casement windows.
Zero Comparison
Zero|90, Liniar's 90mm uPVC casement windows, are unlike any other
Zero Waste
As the UK's first
Zero compromise
In addition to superior thermal efficiency, the multi-chambered design provides noise reduction, halving the transmissible sound compared to a standard double-glazed window to enhance quality of life.
Zero Limitations
Zero|90R casement windows are not just for new builds and can be retro-fitted into existing window cavities. The R stands for 'rebated', meaning these 90mm windows seamlessly fit into place where a 70mm window once sat.
With millions of UK homes falling well below the recommended standards for energy and carbon saving, fitting Zero|90R casement windows provides a solution for helping every household on its journey to Net Zero.
This product is available in more colours for bespoke orders. See the full colour range here.
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Introducing Liniar's remarkable 90mm Passivhaus-certified uPVC casement windows, part of the ground-breaking Zero|90 range which sets new standards in the industry. Designed to excel in energy efficiency, these windows achieve the highest energy efficiency for uPVC windows in the UK, making them the top choice for both new buildings and refurbishment projects.
90mm Casement Window FAQs
*How is the £15,000 saving in energy bills calculated?
The saving is based on Liniar's energy savings calculator, over an estimated useful lifespan of 35 years (quoted by the BRE) for a typical detached house replacing its windows and doors. The calculations include 1% inflation in energy bills over this timescale.
**How is the figure of 700 trees calculated?
It's based on the carbon savings generated by installing Zero|90 windows in a home, using a conversion factor of 24 trees per tonne of CO2 (based on Encon.eu calculations).
What is the noise reduction of a Liniar 90mm casement window in decibels?
A triple-glazed 90mm uPVC casement window from Liniar can reduce noise by 42 decibels. Although this doesn't sound much more than a double-glazed 70mm window (32 dB), it actually HALVES the noise transmission by comparison!
Does the Liniar 90mm uPVC casement window contain the patented bubble gasket?
Yes - every Zero|90 casement window includes all the patented technology found in Liniar's other systems, including the unique bubble gasket seal for supreme weatherproof results.
Does 90mm mean the window frames are thicker than the 70mm windows?
No - although Zero|90 casement windows are 90mm deep, they look exactly the same as Liniar's 70mm casement windows from both the outside and the inside, so you get the same slim sightlines and large glazed areas. The extra frame depth allows for triple and even quadruple-glazed units to be fitted, meaning the thermal and acoustic properties of the windows are significantly better than double-glazed windows.
Looking for Zero|90 casement windows? Search for a Liniar supplier! Just enter your postcode to reveal the Liniar suppliers nearest to you (or those who deliver nationwide).
Product information
- Passivhaus compliant windows (56mm triple glazed) that achieve the highest thermal efficiency
- U-Values as low as 0.66 with triple glazing, saving more than £15,000 in energy bills *
- Enhanced security for your home, with PAS24, Secured By Design, and Part Q compliance
- Recycled core, with sustainability credentials equivalent to the household planting over 700 trees **
- Noise reduction that halves transmissable sound compared to a double-glazed window
- Patented, co-extruded bubble gasket eliminates draughts and leaks for superb weather protection
- Available in modern chamfered styling for a clean, contemporary appearance
- Includes a 10-year frame guarantee for long-term reassurance and peace of mind
- British designed and manufactured specifically for the UK market and supporting the UK economy
- Innovative rebated version (Zero|90R) enables a retro-fit with minimal interior disturbance
* Based on Liniar's Energy Saving Calculator
** Based on 24 trees per tonne of CO₂. Source: Encon.eu
Passive House
Secured By Design
PAS24 Security
BS EN 6375
BS EN 12608
