In the state of water vapor, the water particles are very fine, and according to the principle of capillary movement, they can smoothly penetrate into the capillary tube to the other side, so that the vapor permeability phenomenon occurs. When the water vapor condenses into water droplets, the particles become larger, due to the role of the surface tension of the water droplets (water molecules “pulling against each other”), the water molecules can not be successfully detached from the water droplets infiltration to the other side, that is, preventing water infiltration occurs, so that the vapor permeable membrane has a waterproof function!
Airtightness:The waterproof and breathable membrane is laid outside the thermal insulation layer, wrapping up the whole building, effectively strengthening the airtightness of the building, thus reducing air leakage and convective heat loss.
Watertightness: The excellent waterproof performance of the waterproof breathable membrane, tightly wrapped, to protect the building from water vapor and rain erosion. It effectively ensures the thermal insulation effect and durability of the building, making the building more energy efficient and environmentally friendly.
Vapor-inducing: When the temperature difference between hot and cold produces condensation phenomenon, it will form water droplets on the roof or wall surface, the water droplets invade the building or the insulation layer, reduce the thermal efficacy, and affect the durability, after laying waterproof and breathable membrane when the water vapor condenses into water droplets on the inside of the roof tiles, it will drop directly on the waterproof and breathable membrane, and flow smoothly out from the drainage groove, to solve the problem of dew and moisture, and to protect the thermal insulation layer.
Reduce project cost: waterproof breathable membrane to protect the insulation layer, the insulation layer on top of the fine concrete or waterproofing materials can not need to do, simple and convenient construction operation, saving manpower and material resources, can reduce the project cost!
