The energy rating refers to a window’s energy consumption and associated values. It is an official rating system that is maintained and certified by Motiva Oy. The energy rating enables independent comparison of different products. It is a voluntary system for window manufacturers. The energy rating is determined by calculating a comparison figure, which indicates […]
The E-value refers to the energy consumption of the window. For example, an E-value of 100 means that the window emits thermal energy at a rate of approximately 100 kWh per square metre in a year. The E-value is an easy way to compare different window models and manufacturers. All Skaala window models have an […]
The U-value measures the heat loss rating. It indicates the thermal insulation capacity of the window or door. The lower the U-value, the better the insulation capacity.
A selective glass is coated with metal oxide layers that deflect long-wave thermal radiation but allow short-wave radiation to transmit through the glass. This means that solar radiation passes through the window into the room, but only some of the heat in the room is lost through thermal radiation. A selective glass unit therefore provides […]
For fixed windows and the glass elements of external and balcony doors, the glass is often referred to as 2K or 3K. It specifies how many glass layers the unit has. 2K = two glasses 3K = three glasses