Light spill or light pollution is excessive, misdirected, or obtrusive artificial light, often emitted from buildings. If there is too much light pollution, it can wash out starlight in the night sky, interfere with astronomical research and disrupts ecosystems.

The householders are focused on saving energy and maintaining a comfortable internal environment. Overall though, in many cases the condensation does not last long and a little heat from the sun warms the outer glass enough to evaporate the moisture, a gentle breeze or wind will also do the same job.

Haze is an optical phenomenon which makes the glass look like it is covered in a very fine, uniform layer of dust when viewed from an oblique angle or viewed under strong light incident on the glass at an oblique angle. Our original Pilkington K Glass™ can, under certain lighting conditions, display this phenomenon to a limited extent.

How is toughened glass defined? Toughened glass is defined in BS EN 12150-1: 2015: Glass in building – Thermally toughened soda lime silicate safety glass. In this standard, it is defined as:

The U value for glass is determined in accordance with BS EN 673: Glass in building - Determination of thermal transmittance (U value) - Calculation method.

Sir Alastair and his R&D team spent seven years and £28 million of investment, which equates to £150 million in today’s money, developing the technique and building the float process machine.

BS 6206 has now been superseded and replaced by EN 12600. Marking of safety glass has now changed. Please see BS 6262 Part 4 for requirements. EN 12600 defines the term ‘breaks safely’ by reference to the outcome of the impact test.

We offer a range of products which can provide thermal insulation to reduce heat loss in winter: Superior light transmittance with a highly neutral colour. It is the ultimate in thermal insulation for any situation where excessive heat loss is a concern.

From 15 th June 2022, new Part O building regulations came into force, changing the way that architects must design new dwellings in England to prevent residents from experiencing extreme temperatures during the summer, while also reducing reliance on cooling systems.

We recommend that glass is cleaned with a clean cloth and a clear non-abrasive cleaner, such as clean soapy water or a proprietary window cleaner. For glass with a patterned, etched or sandblasted surface, a stiff bristle or nylon brush can be used to remove dirt from the recesses in the surface.