doors, windows & glazing
resistance to penetration can even protect against bullets, explosions and manual attack. In any case however, since glass can behave differently in different
framing systems, it is imperative that high performance security glazing is suitably glazed in appropriate framing systems to achieve the level of protection required.
More than just protection
Although safety and security glass products are designed with protection in mind, the presence of PVB in these products also offers a number of added benefits, such as acoustic insulation. This is particularly beneficial for properties located near to a source of noise disturbance, such as a building site or a busy road. Laminated glass can be combined with other glazing products in an
Insulating Glass Unit (IGU) to offer added benefits. For example, a low- emissivity (low-e) glass coating can be incorporated as a pane of an IGU to provide thermal insulation. The low-e coating applied to glass reflects interior heat back into a room,
reducing heat loss while allowing high levels of valuable free solar gain to heat buildings with no significant loss in natural light. Depending upon the low-e glass used in the IGU, U-values as low as 1.0 W/m2
K can be achieved
with double glazing, whereas triple glazing can reach U-values as low as 0.5 W/m2
K. This can significantly reduce a building’s reliance on heating, in
turn reducing utility bills for tenants. Laminated glass can also be combined with self-cleaning glass products.
Self-cleaning glass uses a dual-stage process whereby organic deposits, such as dirt, are broken down by daylight and then washed away by rain. The first stage of the cleaning process is ‘photocatalytic.’ In this stage, the coating reacts with daylight to break down organic dirt. The second stage
is hydrophilic i.e. instead of forming droplets, rainwater hits the glass and spreads evenly, running off in a ‘sheet’ and taking the loosened dirt with it, also drying quickly without leaving streaks. This helps keep homes clean, helping save time and money for the tenants or those responsible for maintaining the property. Similarly, advances in glass coating technology means that safety and security products can now also offer solar control, thermal insulation, self-cleaning and anti- condensation properties. Developments mean housing professionals can fulfil a wide variety of end-users’ requirements, while meeting the strictest safety and security standards.
Phil Brown is European regulatory marketing manager at Pilkington.
40 | HMM July 2016 |
www.housingmmonline.co.uk
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