How to distinguish the quality of waterproof vents

A good waterproof vent has good performance in terms of water resistance, compression resistance and temperature resistance. Generally speaking, due to the high temperature resistance of the material, the finished waterproof vent can withstand high temperature up to 100. It can reach minus 30 degrees at very low temperature, so the adaptability to temperature is also very good.

However, poor quality waterproof vents or even fake breathable membranes are generally made of various glues, such as hot-melt composite glue and spray glue, which are more common. The waterproof vents of the 2000s are very poor in temperature resistance. A slightly higher temperature than the normal temperature will cause the glue to melt and crack, resulting in delamination, so the poor quality waterproof vents will also be sticky to the touch.

There is also the difference between pressure and anti-oxidation. Generally, a good breathable membrane can reach 2 meters under hydrostatic pressure without deformation and damage. It can still be used normally, and can be used for poor quality waterproofing. In terms of vents, if the hydrostatic pressure cannot reach one meter, it will start to leak and cracks. Even worse, it can only reach 30cm of water pressure and it will not work normally. The waterproof vents with poor anti-oxidation quality are generally made of PP-type materials. The anti-aging properties of this material are very poor, especially under the irradiation of ultraviolet rays, it will accelerate its own aging and shorten its life.