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Damp room doors are sprayed with water as part of the tests

  • sprayed with water 48 times for 30 seconds each at a height of 50 cm.
  • The spraying is followed by a drying phase of 29.5 minutes.
  • The thickness swelling and water absorption are then determined.

Wet room doors are

  • Sprayed 96 times for 3 minutes at a height of 150 cm (i.e. above the handle)
  • The drying process takes 26 minutes.
  • The thickness swelling and water absorption are also determined here.

Damp-proof doors are generally sufficient for private living areas (bathroom, toilet), as it is unusual to spray doors intensively with water in the bathroom at home.

The situation is different in a possible spa/sauna/pool area. Here, it is quite conceivable that doors will be exposed to significantly more water than in the living area. It is also clear that wet room doors also make sense in public bathing facilities and the like.

While wet room doors are available in all conceivable variants, this is different for wet room doors. The latter are often made entirely of plastic.


Glass surface almost completely covered with fine water droplets and irregular condensation patterns; behind them diffuse translucent green-brown colour tones
Water droplets of different sizes on a glass surface, irregularly distributed against a light blue-green background