According to the estimates of the four industry associations VFF, pro-K, FV S+B and BF, positive overall economic conditions and rising residential construction lead to positive impulses on the German window market. The slight upward trend that has been continuing since 2007 is thus continuing. Based on the 13.8 million window units (WU) in 2016, sales of windows in Germany are expected to increase by 2.9 % to 14.2 million WU in 2017, according to a Heinze study. In 2018, an even stronger increase of 3.3% to 14.8 million WU is considered possible.
With regard to frame materials, the four industry associations expect only minor shifts in the current year. Experts expect that PVC windows will reach a market share of 57.7 %. The industry associations are also expecting increasing growth rates in the field of exterior doors. PVC doors will account for 32.8% of unit sales in 2018. For comparison: aluminium doors 32.5%, timber doors 25.3%, other materials 9.4%.