On Dry and Clean Walls, The Fungus Does Not Multiply, TheFore, The Cace of Its Appension Is Damp. The Appe herance of the Fungus on the Walls Only in the Cold Indicates that Outer Walls are not Well -Salated En feing. Roads Creates Condensate on the Walls, As a Result of Which Moisture Accumulates on the Walls, Which is an Excellent Medium for the Appe, Mold.