Safety and Security
At Epwin Glass, we offer a range of glazing options for use in safety and security applications, including toughened, laminated and fire resistant glass.
Toughened glass is produced by heating and rapidly cooling regular float glass after it has been cut to size and edge worked (arrissed). To increase its strength, the glass is passed through a furnace and heated to around 680°C and then rapidly cooled with forced air. The toughening process puts the outer surfaces into compression and the inner surfaces into tension, this causes the glass (when broken) to crumble into small granular chunks instead of splintering into jagged shards. Toughened glass is up to five times stronger than ordinary glass of the same thickness. Because of its strength, it offers architects and builders far greater scope in their use of glass buildings, especially in situations where safety is a key requirement. Where specific barrier loadings are specified, calculations can be obtained through Epwin Glass’s Technical Department.
Laminated Safety Glass is a type of glass that will not shatter or collapse under normal bodily impact, retaining its integrity within the frame. It consists of two sheets of glass with a polyvinylbutyral (PVB) interlayer, bonded under heat and pressure into a single unit to provide personal protection against injury by glass due to it collapsing or falling through the glass.
The interlayer keeps the layers of glass bonded even when broken and its high strength prevents the glass from breaking up into large sharp pieces. Laminated glass is normally used when there is a possibility of human impact or where the glass could fall if shattered.
Laminated Security Glass is used in situations where resistance to manual attack is required or to slow down illegal entry into a building, such as to meet the requirements of Approve Document Q and Secured by Design specifications.
Laminated glass can also be used to improve the sound insulation rating of a window. All laminated interlayers (PVB) have an anti UV value helping to reduce fading in the home.
Fire Resistant Glass
At Epwin Glass we process Pyrocet fire resistant glass for some of the UK’s most respected fire and safety glass specifiers, supplying exclusively through our partner, Promat Securiglass. Fire resistant safety glass significantly increased the resistance of glazed products to fire, heat and physical of ballistic attack.
Complying with British Standard BS476 part 22, our glass can maintain its physical integrity by insulating against heat for up to 120 minutes, depending on the glazing system, giving ample time for fire control measures and rescue to take place.
There is a wide range of Pyrocet variations in single and double glazed combinations for fire-resistant applications. We process tested glass sizes from 100mm x 100mm up to 1400mm x 2700mm and the majority of our products carry Class A safety ratings.
Our versatility and high standards are reflected in the quality of our products and service, enabling our customers to supply some of the best solutions and products on the market. We offer a bespoke service, so please contact us to discuss your specific requirements.
Please note fire resistant glass only works if it is part of a tested and compliant fire glazing system.