
Janex is constantly updating product design and engineering. With environmental issues in mind, the end user, guarantees, security, acoustic values and thermal efficiency, products are always evolving.
Making products for the Code for Sustainable Homes, which will earn clients the highest number of Eco points on a building, we can supply windows with U-values as low as 0.8W/M2k. These values are not just about the glazing options.
These values come from the total window, the material used in frames, sills, surrounds, the way in which the window is constructed, ironmongery, opening engineering.