What is a waterproof breathable membrane

The waterproof and breathable membrane is a new type of polymer material. The production process of the waterproof and breathable membrane is much higher than that of ordinary waterproof materials. At the same time, in terms of quality, the waterproof and breathable membrane has materials that other waterproof materials do not have.
This product will be mainly used in steel structures and wooden structures in the construction field, and because the domestic market is relatively chaotic, many products are sold on the Internet, but many of the products promoted on the Internet do not have the ability to produce waterproof and breathable membranes Ability, so that those small merchants and hawkers will use non-woven fabrics and glue to compound fake and inferior products.
When the waterproof and breathable membrane is in the state of water vapor, the particles of water droplets are relatively small, and then according to the principle of capillary movement, they can penetrate to the other side of the capillary, and then the breathable phenomenon will occur.