How quickly does water dry up

Drying basements after flooding: you have to consider that

The severe flooding of the past few days has not only inundated tens of thousands of cellars in the particularly affected disaster areas in the east and south of the country. Mud and water have penetrated the houses nationwide. Many homeowners have to repair the damage from their own resources because they are not insured against flood damage. To keep costs as low as possible, it is important to act quickly but wisely. Not every drying method is useful. What to consider when drying the cellar. This info graphic for cleaning up after the flood shows what those affected need to think about now.

"Wet cellars must now be pumped empty and drained as quickly as possible," advises Thomas Penningh, President of the Association of Private Builders (VPB) in view of the flood damage nationwide.

Repair flood damage as quickly as possible

"The longer the water is in the house, the more likely homeowners will have to reckon with consequential damage, especially mold." According to the building expert's experience, houses with thermally insulated, i.e. inhabited cellars, are particularly at risk. "While a simple composite screed floor dries well again after a water ingress, the water in a thermally insulated basement usually remains between the floor slab and the thermal or impact sound insulation."

Danger of mold from hidden moisture

This is tricky because the residents usually have no idea of ​​the problem. You removed the wet carpet and wiped the tiles dry and now you think everything is fine. In fact, however, there is still the dirty stock in the floor structure. And it has a lot to offer: "Mold experts assume that germs will start to develop after a week at the latest. You will have a mold problem in this room after two weeks at the latest," warns Penningh.

Thoroughly dry the screed

This can only be avoided if the water is removed from the cellar as quickly as possible, and largely without leaving any residue. That means not only pumping out, but also removing the water that has penetrated under the screed. To do this, the screed is drilled open at various points and hot air is introduced. The moist air is then blown out of the floor via the connection joints all around and the moisture is then extracted from the air with condensate dryers.

Close room while drying

The rooms should be closed for effective drying. Otherwise the volume of air that has to be dehumidified is unnecessarily large. If the cellar has been under water for a long time, mold is likely. Then the moisture under the floor must be dried in such a way that germs or mold spores cannot get into the room air. This requires drying processes for which only specialist companies should be consulted.

"Here, too, it is important that the affected rooms are sealed off from the rest of the house. Otherwise there is a risk that unaffected rooms on the ground and upper floors, for example, will be contaminated," warns Penningh and adds: "Before drying is for this determine the spread of moisture by measurements on the floor slab; after drying, the success of the drying process is to be confirmed by a new measurement. "

Popular drying method is harmful to health

It is advisable to call in specialists for both the removal of mold and the drying of the wet basement rooms. A building expert assesses the type and extent of the water damage and recommends an appropriate drying or renovation method. The rest is up to specialist companies. If you try to dry the cellar yourself with a blower, you risk damage to your health. "The most frequently used drying method with a blower can be particularly harmful because it distributes pollutants and mold spores throughout the house in the first place," the expert warns and advises that local specialist companies should be commissioned to carry out the work that has been decided Flood disasters are always on the move and offer their services on the doorstep, however, victims should avoid.