Drainage from the house foundation with a drainage system became more and more important due to the heavy rain and continuous rain. Due to the slope of our property, the surface water always flowed to the house and seeped into the walls. A little later, the floors in the basement became wet and and in the lower basement the water was standing. I could not achieve much by drying the walls – before that, the cause of the dampness had to be eliminated. Drainage should remedy the situation.