BUILDING ENVELOPE
performance of glazing, effectively mandating low-emissivity glass as standard. Requirements can also be higher when glass elements exceed a certain percentage of floor area. However, standards are set to become
more stringent for both new and existing dwellings following the Government’s recent consultation on Part L to tackle the climate crisis. The proposed changes will result in windows with lower (i.e. better) U-values, particularly for new build, the requirements are anticipated to increase the prevalence of triple glazing. This is also driving the increased requirement for thermal insulation glass, with 51% of architects reporting a surge in demand.
elements, such as windows and glazed doors, must meet or exceed certain U- values and, in the case of existing residential buildings, Window Energy Ratings, which quantify the energy
HEATED GLASS Glass doesn’t just have a role to play in preventing heat gain and loss from your home – it can also be used to actively generate heat. Heated glass has an electrically conductive coating, allowing electricity to pass through and create a radiant heat source. It can be used in an array of different design features, from bi-fold doors to large picture windows, to help prevent condensation build-up and offer unobscured views of your home’s surroundings. Powered by only a small amount of electricity, heated glass also helps
maintain thermal comfort if you are considering a heat pump to heat your home instead of a traditional gas boiler. This alternative heating solution runs on electricity, significantly reducing heating costs, and is low carbon. The Government is likely to implement a gas boiler ban in new homes from 2025 as part of its climate strategy, meaning such technology is likely to become much more commonplace. As well as mitigating unsightly condensation, heated glass could play a role in providing 'top up' heating.
FIT FOR THE FUTURE Solar control, thermal insulation and heated glass are three types of specialist glass that can help to reduce your home’s environmental impact, cut energy bills and create a comfortable living environment year-round. These complementary solutions can be used in combination to ensure that your development is sustainable and compliant with Government regulations, both present and future, while not compromising on the aesthetic appeal of your forever home.
Phil Brown is European regulatory marketing manager at Pilkington UK, part of the NSG Group
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www.sbhonline.co.uk
nov/dec 2021
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