Zero|90 windows and doors are unlike anything available in the UK today. With a suite including the UK's first Passivhaus-certified PVCu windows, the ZeroI90 range of windows and doors offer a sustainable, cost-effective solution to rising energy prices and external noise.

Not only will Zero|90 windows and doors help developers and housebuilders meet new energy standards well ahead of schedule. Zero|90 can already achieve a U-Value of 0.66 protecting against future legislative changes for many years to come.

And it's not just for new builds! A new, innovated design means ZeroI90 windows can be retrofitted into existing buildings to replace older windows.

The retrofit option makes ZeroI90 the ideal choice as the most thermally efficient window and door replacement system in the UK.

Energy Saving

Choosing Zero|90 windows and doors delivers U Values as low as 0.66 W/M2

Noise Reducing

Zero|90 blocks up to twice the external noise compared with double glazing

Passivhaus Capable

Zero|90 offers ultra-high energy efficiency, helping developers achieve certified Passive House


Replacing standard PVCu windows with Zero|90 offers the equivalent to planting over 700 trees

Zero|90 Windows and doors – Energy Saving

Discover the benefits of Liniar’s 90mm PVCu energy-efficient window system with triple glazing. The video demonstrates how, with reduced heat loss through windows, this innovative solution can help save money on energy bills while keeping properties comfortable.

Find out more

Exclusively from Window Supply Company

The Zero|90 range is exclusively available from Window Supply Company with a full range of products for both new builds and existing buildings to help housebuilders, installers, local authorities, architects, and developers on their way to Net Zero.
Casement windows Tilt & Turn windows

Residential doors

French doors

Why Choose Zero|90

Innovative - Including the UK’s first Passive House certified PVCu windows

• Ultra energy efficient – Offering some of the highest energy ratings in the UK

• Superb noise reduction – Zero|90 windows can reduce noise levels by up to 42 decibels

• Safe and secure – All Zero|90 products are fulling tested and compatible with British Standards PAS24 and Secured By Design

• Attractive – Zero|90 has the same slim sightlines as a standard 70mm window

• Retrofit option – Zero|90 can be fitted into an existing 70mm opening

• Contemporary – Zero|90 is available in a choice of popular foiled finishes to suit every building