The Flemish government has decided on July 15 2016 that double glazing will become stepwise mandatory from 2020 onwards. The approach is based on a point-system:
- from 2020 onwards, a dwelling without double glazing will receive 9 points;
- from 2023 onwards, a dwelling without double glazing will receive 15 points.
In practice, a dwelling with 15 points of more is considered not available for the renting market. It is expected that this new legislation will give a strong boost to the replacement of single glazing by double glazing.