How nice to almost exclusively see triple glazings with warm edge spacers in the exhibits of the wooden and pvc window producers of Hall B4, C4 and B5. It has got around that warm edge is advantageous because it improves the Uw-values. The further distribution of warm edge is unstoppable, same as for triple glazing.

Metallic systems though seem not yet to have taken the message entirely. Hall A1 still contained quite a few exhibits with double glazings, often with aluminium spacers. What a pity, considering the high thermotechnical sensitivity of metallic window and facade systems to the improvement of the transition area between glass and frame. The use of warm edge makes technical sense and is a economic measure. As for the next BAU 2015, I am confident that regarding spacer and glass, also the exhibits in hall A1 will be up-to-date.