The resistance of building materials for transmissions is very different. It depends on the density and texture of the material. Synthetic materials made of plastics, metals and glass break the capillarity or lead these transmissions to the surface on the inside (when the body is hollow) and / or on the outside. The substances mentioned themselves take up little or little water and other liquids. Therefore, there is little to no swelling behavior with moisture. The material can not mutate to “dampening storage”. Uniform room climate is striven for. For this effect certain reserves of water have to be kept.
Natural materials of minerals, e.g. clays and soils, plants and animal bodies are capable of absorbing and releasing solids, liquids and gases. They react to environmental influences with their own self-regulation.
In contrast, there are synthetic materials in which these influences can be excluded. They fulfill their task essentially where chemical resistance, tightness, temperature and abrasion are required.
Although synthetic materials also react to environmental influences such as heat, cold, abrasion, electrical and magnetic currents; Their function is largely retained. However, synthetic materials, e.g. Plastics release plasticizers and embrittle, thermosets form molecular chainings by ultraviolet light and aging. Solvents with a higher flame point smear slowly.
In the case of metals, electrical currents and corrosion phenomena occur. Magnetic fields change natural magnetic fields. Their function as water pipe, sewage pipe, window seal etc. remains effective. However, during and after aging processes, they usually lose their special function and the substances become unusable.
Natural building materials also age, but they offer numerous good recycling possibilities, e.g. By composting, by means of fungi, micro-organisms and insects, favored by moisture and heat, or by silicification, fossilization. The return to the natural cycle does not present any difficulties.