Do the storage buildings comply with the NEN 1087 ventilation standard?

The non-insulated storage buildings ventilate at the front and rear under the ridge cap and the gable trim. In addition, all roof seals are equipped with ventilating foam tape. However, the ventilation is not calculated.
The insulated storage buildings have no ventilation openings. You can optionally have a natural or mechanical ventilation system installed.

Ventilation standards are not necessary for storage buildings unless the application prescribes these (for instance storing chemicals).