Glazing Options

Glazing options

Liniar’s conservatory roof kits are available in a wide range of glazing solutions. Double glazed units are constructed with an inner-pane comprising one of the four options below, with an optional coating on the outer frame to provide self-cleaning or solar control properties.

Uncoated (U-value 2.6)

Pilkington Toughened Glass is up to five times stronger than ordinary glass of the same thickness. It meets world-wide safety standards for glass subjected to accidental human impact at the highest level of severity.

Pilkington K Glass (U-value 1.5)

Pilkington K Glass™ is the UK’s leading thermal glass brand. Established for over 21 years and easily stocked, processed and installed, it has become the trusted solution for meeting energy-efficient Building Regulations.

Pilkington S3 (U-value 1.1)

Pilkington Optitherm™ S3 is one of the market leading super neutral low-emissivity glass products; due to its very high light transmittance and low light reflectance, it has high levels of neutrality, making it ideal for large glazing areas with demanding design.

Pilkington S1 (U-value 1.0)

Pilkington Optitherm™ S1 is the ultimate in thermal insulation for Insulating Glass Units and should be specified for any situation where excessive heat loss is a concern.


Our polycarbonate roofs offer a lower-budget option and block 99% of UV radiation. They also offer superb thermal insulation, with U-values as low as 1.2. Choose between 25mm and 32mm thick multi-wall polycarbonate for a lightweight roof with excellent impact resistance and a Class 1 BS 476/7 fire rating, available in Clear, Opal or Bronze. The Heatguard/Opal tint option offers a multi layered dual colour sheet with a co-extruded heat reflective layer in the outer surface, which reduces solar transmission by up to 50% compared with standard tint material. Solar inserts are also available as an optional extra for even greater solar protection.


Liniar chose to use the Pilkington range of products for its glazing supplies. As one of the world’s leading glass manufacturers with a reputation for innovation in glass technology, the Pilkington brand values are very much in line with Liniar’s own brand.

Self-cleaning and solar control glass
Pilkington Activ™ is the world’s first self-cleaning glass, and was specifically designed for conservatory roofs.

Available in clear, or with a range of tinted solar control options, the Pilkington Activ™ coating is a permanent coating and guaranteed to last for the lifetime of the glass.

Organic dirt from exterior surfaces is broken down and washed away using natural daylight and rainwater, making it ideal for hard to clean areas.

Pilkington Activ™ is available in Clear, Blue, Neutral and Bronze, with a range of U-values (see table). Pilkington Activ™ can be used in roofs with sloping angles of at least 10°, but works best where the roof is pitched at 30° or greater.

Even greater heat reflection
Pilkington Activ™ SunShade™ combines the selfcleaning properties of Pilkington Activ™ with even greater solar control performance, creating a cool and comfortable environment during hot weather.

The glass has a special coating that helps to reflect up to 80% of the sun’s heat, Pilkington Activ™ SunShade™ is available in Blue or Neutral, with excellent U-values as low as 1.0.