Hengittävyysom

Hengittävyysom is a Finnish term referring to the property of a material that allows air or vapor to pass through it. This characteristic is crucial in many applications, particularly in textiles and building materials.

In the context of textiles, hengittävyysom relates to how well a fabric allows moisture vapor generated by the body to escape. This is often measured by its breathability. Materials with high hengittävyysom prevent a buildup of sweat and condensation, contributing to comfort, especially during physical activity or in warm climates. Fabrics like Gore-Tex, known for its waterproof yet breathable qualities, exemplify effective hengittävyysom.

In construction, hengittävyysom is important for the performance of building envelopes. Walls, roofs, and other structures need to allow some moisture vapor to pass through to prevent condensation within the building fabric. This helps to avoid issues such as mold growth, material degradation, and reduced insulation effectiveness. Different building materials, from wood and certain types of insulation to specialized membranes, possess varying degrees of hengittävyysom. Controlling the flow of moisture vapor is essential for maintaining a healthy and durable indoor environment. The concept is often discussed alongside vapor permeability, which is a related but distinct property measuring the rate of water vapor transmission.