Proper protection against moisture is a decisive factor in the durability of a building. The basement walls of a house located in an area with a high groundwater level must be equipped with a heavy vertical anti-water insulation. The insulation should be made of roofing felt or construction foils combined with bituminous preparations and combined with the horizontal under-floor insulation. The waterproofing made in this way is covered with a pressure wall made of clinker bricks, which carries the pressure of groundwater.