Technical Data>Double Insulated Glass
The best available resource to maximise heat insulation on a glass surface is to utilise double glass units, comprising two glass panes, separated in between by a cavity filled with dry, tight air, thus conveying a real thermal insulation improvement.
Under such conditions, a 12-mm-width air cavity double insulated glass (DIG) allows to reach a Kdvh value of 2.80 W/m2K. The K values for DIGs with air cavities of 6 and 9 mm are 3.20W/m2Kand 3.00 W/m2K respectively.
Low-E Double Insulated Glass
Using low emissivity DIGs allows to reduce the heat transfer coefficient “K” value; low-e DIG= 1.8 W/m2K.
Additional Advantages to DIG
The lower the coefficient K value the greater the glass capacity to delay the heat flow caused by the different air temperatures at each side of the glass. Good heat insulation prevents condensation on the surface of the glass, eliminating that cold sensation usually felt on single-paned glasses during winter.