How it works

Physical attack- Security glass

Under physical attack secondary glazing works by providing a second barrier to entry. At lower risk levels it must prevent manipulation of the locks and catches or removal of the glass or glazed panels. As the performance increases it must resist levering or use of cutting tools including penetration of the glazing, which at higher risk levels will be a sophisticated combination of glass, resin and polycarbonate. It is also worth noting that the attacker will have to break through the primary window first then work through the breached opening to attack the secondary glazing, by which time any vibration alarms will have been activated.

Blast mitigation- Security glass

Secondary glazing can protect occupants and contents from the effects of an explosion by containing the flying shards of glass from the breakup of the primary window under the blast load. Fixings, frame, locks and glass are all designed to work in harmony deflecting and yielding to absorb the blast wave. PVB interlayers are used in the laminated glass composition to stretch and contain the blast.

Ballistic- Security glass

Protection from firearm attack is achieved by several layers of glass of various thicknesses laminated together. The front layers of glass are designed to shatter, thereby absorbing the initial impact energy, subsequent glass and interlayers absorb the lower level shock waves. Lighter, thinner bullet resistant glass can be produced by the use of polycarbonate in the lamination. However, bullet resistant glass is not enough on its own as the same performance is required from all the components of the frame including any joints and junctions.

Fire- Fire resistant glass

Fire resistant glazing provides a protected escape route for occupants. Specialist glass, together with fire and intumescent seals set within appropriate framing, resists the intense heat of a fire. This provides “integrity” which prevents breach of flames and gases, and where required “insulation” to reduce the transfer of heat.


For further information please Contact us today on 02871 357 444. -or-  E-mail us.

Our Showroom and Factory are Located at the Glass works, Skeoge industrial estate Derry City Northern Ireland, we have expanded and developed both our product ranges and glazing capabilities over the years and now offer our services to all areas of Ireland, the United kingdom and internationally.